[ZHANG, Wei 张威, ZHANG, Wei 张威, HU, Qingyuan 胡清源, ZHANG, Wei 张威, HU, Qingyuan 胡清源, LIU, Nan 刘楠, ZHANG, Wei 张威, HU, Qingyuan 胡清源, LIU, Nan 刘楠, LUO, Anna 罗安娜, ZHANG, Wei 张威, HU, Qingyuan 胡清源, LIU, Nan 刘楠, LUO, Anna 罗安娜, HE, Shengbao 何声宝, ZHANG, Wei 张威, HU, Qingyuan 胡清源, LIU, Nan 刘楠, LUO, Anna 罗安娜, HE, Shengbao 何声宝, WANG, Yingyuan 王英元, ZHANG, Wei 张威, HU, Qingyuan 胡清源, LIU, Nan 刘楠, LUO, Anna 罗安娜, HE, Shengbao 何声宝, WANG, Yingyuan 王英元, FENG, Xiaomin 冯晓民, ZHANG, Wei 张威, HU, Qingyuan 胡清源, LIU, Nan 刘楠, LUO, Anna 罗安娜, HE, Shengbao 何声宝, WANG, Yingyuan 王英元, FENG, Xiaomin 冯晓民, MA, Yanjun 马雁军, ZHANG, Wei 张威, HU, Qingyuan 胡清源, LIU, Nan 刘楠, LUO, Anna 罗安娜, HE, Shengbao 何声宝, WANG, Yingyuan 王英元, FENG, Xiaomin 冯晓民, MA, Yanjun 马雁军, XING, Jun 邢军, ZHANG, Wei 张威, HU, Qingyuan 胡清源, LIU, Nan 刘楠, LUO, Anna 罗安娜, HE, Shengbao 何声宝, WANG, Yingyuan 王英元, FENG, Xiaomin 冯晓民, MA, Yanjun 马雁军, XING, Jun 邢军, HOU, Hongwei 侯宏卫, ZHANG, Wei 张威, HU, Qingyuan 胡清源, LIU, Nan 刘楠, LUO, Anna 罗安娜, HE, Shengbao 何声宝, WANG, Yingyuan 王英元, FENG, Xiaomin 冯晓民, MA, Yanjun 马雁军, XING, Jun 邢军, HOU, Hongwei 侯宏卫, LIU, Yang 刘洋, ZHANG, Wei 张威, HU, Qingyuan 胡清源, LIU, Nan 刘楠, LUO, Anna 罗安娜, HE, Shengbao 何声宝, WANG, Yingyuan 王英元, FENG, Xiaomin 冯晓民, MA, Yanjun 马雁军, XING, Jun 邢军, HOU, Hongwei 侯宏卫, LIU, Yang 刘洋, WANG, Ying 王颖, ZHANG, Wei 张威, HU, Qingyuan 胡清源, LIU, Nan 刘楠, LUO, Anna 罗安娜, HE, Shengbao 何声宝, WANG, Yingyuan 王英元, FENG, Xiaomin 冯晓民, MA, Yanjun 马雁军, XING, Jun 邢军, HOU, Hongwei 侯宏卫, LIU, Yang 刘洋, WANG, Ying 王颖, XIN, Baojun 辛宝珺, ZHANG, Wei 张威, HU, Qingyuan 胡清源, LIU, Nan 刘楠, LUO, Anna 罗安娜, HE, Shengbao 何声宝, WANG, Yingyuan 王英元, FENG, Xiaomin 冯晓民, MA, Yanjun 马雁军, XING, Jun 邢军, HOU, Hongwei 侯宏卫, LIU, Yang 刘洋, WANG, Ying 王颖, XIN, Baojun 辛宝珺, ZHANG, Hongfei 张洪非, ZHANG, Wei 张威, HU, Qingyuan 胡清源, LIU, Nan 刘楠, LUO, Anna 罗安娜, HE, Shengbao 何声宝, WANG, Yingyuan 王英元, FENG, Xiaomin 冯晓民, MA, Yanjun 马雁军, XING, Jun 邢军, HOU, Hongwei 侯宏卫, LIU, Yang 刘洋, WANG, Ying 王颖, XIN, Baojun 辛宝珺, ZHANG, Hongfei 张洪非, JIANG, Xingyi 姜兴益, ZHANG, Wei 张威, HU, Qingyuan 胡清源, LIU, Nan 刘楠, LUO, Anna 罗安娜, HE, Shengbao 何声宝, WANG, Yingyuan 王英元, FENG, Xiaomin 冯晓民, MA, Yanjun 马雁军, XING, Jun 邢军, HOU, Hongwei 侯宏卫, LIU, Yang 刘洋, WANG, Ying 王颖, XIN, Baojun 辛宝珺, ZHANG, Hongfei 张洪非, JIANG, Xingyi 姜兴益, YANG, Jin 杨进] No. 2 Fengyang Road, Hi-Tec Industries Development Zone 中国河南省郑州市高新技术产业开发区枫杨街2号, Henan 450001Zhengzhou, Henan 450001 The present invention provides a buffer system and a method of using the buffer system to measure total alkaloid in tobacco or tobacco products through continuous flow. The buffer system comprises a buffer solution A and a buffer solution B. The buffer solution A is prepared by the following steps: weighing 60.5 to 83.0 g, preferably 71.6 g, of disodium hydrogen phosphate and 10.1 to 20.2 g, preferably 15.2 g, of trisodium phosphate, placing the weighed substances into a beaker, dissolving the mixture with water, transferring the solution into a volumetric flask of 1 L, and then filling water into the volumetric flask until the water reaches the scale. The buffer solution B is prepared by the following steps: weighing 5.5 to 8.0 g, preferably 7.0 g, of p-aminobenzene sulfonic acid, 60.5 to 83.0 g, preferably 71.6 g, of disodium hydrogen phosphate, 5.0 to 7.0 g, preferably 6.2 g, of sodium dihydrogen phosphate, and 10.0 to 12.1 g, preferably 11.8 g, of sodium citrate, placing the weighed substances into a beaker, dissolving the mixture with water, transferring the solution into a volumetric flask of 1 L, and then filling water into the volumetric flask until the water reaches the scale.

[GAO, Jing 高晶, GAO, Jing 高晶, LIU, Na 刘娜, GAO, Jing 高晶, LIU, Na 刘娜, GAO, Xing 郜星, GAO, Jing 高晶, LIU, Na 刘娜, GAO, Xing 郜星, MA, Xu 马旭, GAO, Jing 高晶, LIU, Na 刘娜, GAO, Xing 郜星, MA, Xu 马旭, HU, Zhimin 胡志民, GAO, Jing 高晶, LIU, Na 刘娜, GAO, Xing 郜星, MA, Xu 马旭, HU, Zhimin 胡志民, DONG, Mei 董梅, GAO, Jing 高晶, LIU, Na 刘娜, GAO, Xing 郜星, MA, Xu 马旭, HU, Zhimin 胡志民, DONG, Mei 董梅, GUO, Jin 郭进, GAO, Jing 高晶, LIU, Na 刘娜, GAO, Xing 郜星, MA, Xu 马旭, HU, Zhimin 胡志民, DONG, Mei 董梅, GUO, Jin 郭进, WANG, Xuanzhuo 王选卓, GAO, Jing 高晶, LIU, Na 刘娜, GAO, Xing 郜星, MA, Xu 马旭, HU, Zhimin 胡志民, DONG, Mei 董梅, GUO, Jin 郭进, WANG, Xuanzhuo 王选卓, WEI, Caifeng 魏彩凤] No.36 Tuolanshan Road, Economic Development Zone 中国江苏省徐州市经济开发区驮蓝山路36号, Jiangsu 221004Xuzhou, Jiangsu 221004 Provided is an auger drill operation system, comprising a power supply switch (1), a battery (2), a transmitter (3), a receiver (4), and a ratio adjustment valve; the ratio adjustment valve can adjust the speed of the movements of the auger drill; the negative electrode of the battery (2) is grounded by means of the power supply switch (1); the positive electrode of the battery (2) is connected to the power supply terminal of the receiver (4); the transmitter (3) and the receiver (4) may communicate with each other in real time by means of a radio frequency, or are connected and communicate by means of a CAN bus; the transmitter (3) can send a PWM signal to the receiver (4); the PWM output port of the receiver (4) is connected to the ratio adjustment valve. The invention also relates to a control method for the described operation system, and an auger drill comprising the described operation system; the auger drill comprising the described operation system is capable of adapting to complex and harsh working environments.

[LIU, Donghai 刘东海, LIU, Donghai 刘东海, LV, Nan 吕楠, LIU, Donghai 刘东海, LV, Nan 吕楠, DUN, Chaogang 顿超钢, LIU, Donghai 刘东海, LV, Nan 吕楠, DUN, Chaogang 顿超钢, ZHOU, Wei 周威, LIU, Donghai 刘东海, LV, Nan 吕楠, DUN, Chaogang 顿超钢, ZHOU, Wei 周威, XU, Xing 许行, LIU, Donghai 刘东海, LV, Nan 吕楠, DUN, Chaogang 顿超钢, ZHOU, Wei 周威, XU, Xing 许行, PANG, Min 庞敏] No. 2 Mengxi Road, North of High-tech Garden, Nanshan 中国广东省深圳市南山区科技园北区梦溪道2号, Guangdong 518057Shenzhen, Guangdong 518057 A storage space allocation method and apparatus. The method comprises: receiving a space occupation request sent by a space requesting party (S201); in a case in which a pre-allocated space capacity is insufficient, determining whether a space capacity of an expansion storage device is sufficient (S202); and if the space capacity of the expansion storage device is sufficient, allocating storage space in the expansion storage device to the space requesting party (S205). Accordingly, in the method and the apparatus, in a case in which a pre-allocated space capacity is insufficient, if a space capacity of an expansion storage device is sufficient, storage space in the expansion storage device can still be allocated to a system for use, and therefore the possibility of poor use experience of a user due to insufficiency of storage space can be reduced. A storage space allocation method and apparatus. The method comprises: receiving a space occupation request sent by a space requesting party (S201); in a case in which a pre-allocated space capacity is insufficient, determining whether a space capacity of an expansion storage device is sufficient (S202); and if the space capacity of the expansion storage device is sufficient, allocating storage space in the expansion storage device to the space requesting party (S205). Accordingly, in the method and the apparatus, in a case in which a pre-allocated space capacity is insufficient, if a space capacity of an expansion storage device is sufficient, storage space in the expansion storage device can still be allocated to a system for use, and therefore the possibility of poor use experience of a user due to insufficiency of storage space can be reduced.

[ZHAO, Xijing 赵希景, ZHAO, Xijing 赵希景, XING, Chenguang 邢晨光, ZHAO, Xijing 赵希景, XING, Chenguang 邢晨光, HUANG, Zhiqiang 黄志强, ZHAO, Xijing 赵希景, XING, Chenguang 邢晨光, HUANG, Zhiqiang 黄志强, Room 236, No.2999 Dongfu Road, Dongfu Town, Haicang District Xiamen, Fujian 361000LIU, Wei 刘伟, ZHAO, Xijing 赵希景, XING, Chenguang 邢晨光, HUANG, Zhiqiang 黄志强, Room 236, No.2999 Dongfu Road, Dongfu Town, Haicang District Xiamen, Fujian 361000LIU, Wei 刘伟, GONG, Hongcan 龚宏灿] Room 236, No.2999 Dongfu Road, Dongfu Town, Haicang District 中国福建省厦门市海沧区东孚镇东孚大道2999号236室, Fujian 361000Xiamen, Fujian 361000 The present application provides are a Streptomyces psammoticus strain OMK-4 and a method for producing vanillin using the strain. The method includes the following steps: activating the strain, culturing the seed, fermenting, extracting, and so on. The method using ferulic acid as material to produce vanillin through microbial fermentation is safe and environmentally-friendly. The present application provides are a Streptomyces psammoticus strain OMK-4 and a method for producing vanillin using the strain. The method includes the following steps: activating the strain, culturing the seed, fermenting, extracting, and so on. The method using ferulic acid as material to produce vanillin through microbial fermentation is safe and environmentally-friendly.

[NIU, Fang 牛芳, WANG, Hanfeng 王翰锋, ZHANG, Hongshun 张红顺, WANG, Naiji 王乃继, JI, Renshan 纪任山, SHI, Liang 石亮, LUO, Wei 罗伟, LIU, Zengbin 刘增斌, ZHANG, Xin 张鑫, XU, Dabao 徐大宝, LIU, Gang 刘刚, LIU, Zhenyu 刘振宇, DUAN, Lu 段璐, QIU, Xing 裘星, GONG, Yanyan 龚艳艳, LI, Xiaojiong 李小炯, ZHOU, Peiran 周沛然, JIANG, Siyuan 姜思源, JIA, Dongliang 贾东亮, CHENG, Peng 程鹏, MENG, Changfang 孟长芳, WANG, Zhixing 王志星, ZHANG, Xufang 张旭芳, CHEN, Zhe 陈喆, ZHANG, Chao 张朝, ZHANG, Bin 张斌, CUI, Mingshuang 崔名双, WANG, Xin 王欣, WANG, Yongying 王永英, WANG, Xuewen 王学文, YU, Haipeng 于海鹏, WEI, Yanrong 魏琰荣, YAN, Shujuan 颜淑娟, DU, Boxi 杜伯犀, ZHANG, Song 张松, DONG, Zhi 董智, WANG, Shijun 王诗珺, LIU, Pengzhong 刘鹏中, TAN, Jing 谭静, LIANG, Xing 梁兴, ZHANG, Jing 张静] 18 Fuqian Street, Dachengzi Town 中国北京市密云区大城子镇府前街18号, Beijing 101502Miyun District, Beijing 101502 The present application relates to a pulverized coal stable combustion and concentration device for a coal-fired power unit. The pulverized coal stable combustion and concentration device for a coal-fired power unit comprises a combustor, a combustion stabilizer, and a concentrator; the concentrator is used for dividing primary air pulverized coal airflow provided by a pulverized coal air source into first airflow, second airflow, and third airflow; the first airflow, the second airflow, and the third airflow are combusted in the combustion stabilizer and the combustor; a first inlet is communicated with the concentrator so as to introduce the first airflow into a pulverized coal pipe assembly; the pulverized coal pipe assembly can divide the first airflow into first sub-airflow and second sub-airflow; the concentration of pulverized coal in the first sub-airflow is less than the concentration of pulverized coal in the second sub-airflow; a first outlet is used for discharging the first sub-airflow into a cavity; a second outlet is used for discharging the second sub-airflow into the cavity; and a secondary air pipe is provided on the outer peripheral side of the inlet end of the combustion stabilizer and is communicated with the cavity. Therefore, the pulverized coal stable combustion and concentration device for a coal-fired power unit in the embodiments of the present application has the advantages of good combustion stability, good environmental protection effect, low production cost and the like.

[CHEN JIAN-GUO, CHEN SHUAI, GUBA WOLFGANG, HAN XING-CHUN, JIANG MIN, KOU BU-YU, LIN ZHAO-HU, LIU HAI-XIA, LIU YA-FEI, SHEN HONG, WU YAO, ZHANG WEI-XING, ZHANG ZHEN-HONG, ZHANG ZHI-WEI, ZHU JIAN-SHENG, ZHU WEI] CH The present invention relates to compounds of formula (Ia), wherein R2, M1, M2, M3, Q1 and Q2 are as described herein, and their pharmaceutically acceptable salt thereof, and compositions including the compounds and methods of using the compounds.

[LI, Meijun 李美军, WANG, Hanfeng 王翰锋, ZHANG, Hongshun 张红顺, LIU, Zengbin 刘增斌, NIU, Fang 牛芳, JI, Renshan 纪任山, ZHANG, Xin 张鑫, WANG, Naiji 王乃继, SHI, Liang 石亮, LUO, Wei 罗伟, ZHANG, Xufang 张旭芳, JIA, Dongliang 贾东亮, MENG, Changfang 孟长芳, LIANG, Xing 梁兴, LI, Xiaojiong 李小炯, HU, Yawen 胡亚文, YU, Daqian 于大千, GONG, Yanyan 龚艳艳, WANG, Xuewen 王学文, LI, Yueqian 李玥蒨, CUI, Guohui 崔国辉, BAI, Yifei 白一飞, HE, Hongxing 何红兴, LI, Xiaojiao 李晓娇, JIA, Ranyang 贾冉阳, YANG, Jinfang 杨晋芳, YU, Haipeng 于海鹏, QIU, Xing 裘星, ZHANG, Xiaoming 张小明, WANG, Peng 王朋, CHENG, Peng 程鹏, ZHANG, Chao 张朝, WEI, Yanrong 魏琰荣, DUAN, Lu 段璐, CHEN, Long 陈隆, YANG, Shi 杨石, LIU, Zhenyu 刘振宇, WANG, Shipu 王实朴, WANG, Zhixing 王志星, XIAO, Cuiwei 肖翠微, CUI, Mingshuang 崔名双, LI, Ting 李婷, WANG, Yongying 王永英, WANG, Zhiqiang 王志强, LIU, Gang 刘刚, DU, Boxi 杜伯犀, ZHANG, Song 张松, WANG, Shijun 王诗珺, ZHANG, Bin 张斌, YAN, Lili 闫黎黎, LI, Weihang 李伟航, ZHANG, Jing 张静, CAI, Peng 蔡鹏, ZHANG, Guangqi 张广琦, XIAO, Xu 肖旭, YAN, Shujuan 颜淑娟, MA, Huiyan 马慧艳, BAI, Yuejuan 白月娟] 18 Fuqian Street, Dachengzi Town 中国北京市密云区大城子镇府前街18号, Beijing 101502Miyun District, Beijing 101502 The present application discloses a thermal energy recovery system. The thermal energy recovery system comprises a boiler, a generator, and a falling-film type absorber. A reaction liquid is arranged inside the generator, and the generator is communicated with the boiler, so that water flowing out of the boiler flows into the generator to heat and concentrate the reaction liquid. The falling-film type absorber comprises an air inlet, a water inlet, a water outlet, a liquid inlet, and a first liquid outlet. The air inlet is communicated with the boiler, so that flue gas flowing out of the boiler flows into the falling-film type absorber; one end of the generator is communicated with the liquid inlet, so that the reaction liquid heated and concentrated by the generator flows into the falling-film type absorber and then the reaction liquid absorbs heat and moisture in the flue gas; the water inlet is suitable for introducing boiler feedwater; the water outlet is communicated with the boiler; and the first liquid outlet is connected to the other end of the generator. The thermal energy recovery system of the present application has the advantages of simple structure, low cost, high thermal efficiency utilization rate, and the like.

[NIU, Fang 牛芳, WANG, Hanfeng 王翰锋, WANG, Pengtao 王鹏涛, ZHANG, Hongshun 张红顺, LIU, Pengzhong 刘鹏中, SHI, Liang 石亮, GONG, Yanyan 龚艳艳, QIU, Xing 裘星, JI, Renshan 纪任山, LUO, Wei 罗伟, LIANG, Xing 梁兴, LIU, Gang 刘刚, WEI, Yanrong 魏琰荣, JIA, Nan 贾楠, WANG, Zhixing 王志星, ZHENG, Xiangyu 郑祥玉, YAN, Lili 闫黎黎, LIU, Zhenyu 刘振宇, MIAO, Peng 苗鹏, YAN, Shujuan 颜淑娟, DU, Boxi 杜伯犀, BAI, Yuejuan 白月娟, LI, Xiaojiong 李小炯, MENG, Changfang 孟长芳, WANG, Xuewen 王学文, WANG, Shijun 王诗珺, CUI, Mingshuang 崔名双, WANG, Jianpeng 王建朋, DONG, Zhi 董智, YU, Haipeng 于海鹏, CHEN, Zhe 陈喆, ZHANG, Song 张松, MA, Huiyan 马慧艳] No. 5, Yulong Street, Caiyu Economic Development Zone, Caiyu Town, Daxing District 中国北京市大兴区采育镇北京采育经济开发区育隆大街5号, Beijing 102600Beijing 102600 A waste gas/waste liquid/solid waste combustion treatment device (100), comprising a housing (101), a feeding assembly (5), and air guide cylinders. The housing (101) is provided with a first cavity (102) and a circumferential wall (103) surrounding the first cavity (102); the first cavity (102) comprises an air guide cavity, a combustion stabilization cavity (1021), and a rectification cavity (1022) that are sequentially communicated; the feeding assembly (5) is provided in the first cavity (102); there are multiple air guide cylinders that are all provided in the first cavity (102); channels are formed between the housing (101) and the air guide cylinder adjacent thereto, between the feeding assembly (5) and the air guide cylinder adjacent thereto, and between two adjacent air guide cylinders. The combustion treatment device (100) can perform effective and full combustion treatment on waste gas, waste liquid, and solid waste. Also disclosed is a use method for the combustion treatment device (100). A waste gas/waste liquid/solid waste combustion treatment device (100), comprising a housing (101), a feeding assembly (5), and air guide cylinders. The housing (101) is provided with a first cavity (102) and a circumferential wall (103) surrounding the first cavity (102); the first cavity (102) comprises an air guide cavity, a combustion stabilization cavity (1021), and a rectification cavity (1022) that are sequentially communicated; the feeding assembly (5) is provided in the first cavity (102); there are multiple air guide cylinders that are all provided in the first cavity (102); channels are formed between the housing (101) and the air guide cylinder adjacent thereto, between the feeding assembly (5) and the air guide cylinder adjacent thereto, and between two adjacent air guide cylinders. The combustion treatment device (100) can perform effective and full combustion treatment on waste gas, waste liquid, and solid waste. Also disclosed is a use method for the combustion treatment device (100).

[Fang NIU, Wei LUO, Naiji WANG, Renshan JI, Liang SHI, Xing LIANG, Yanyan GONG, Yanrong WEI, Pengzhong LIU, Lu DUAN, Xiaojiong LI, Yuhong CUI, Xing QIU, Nan JIA, Zhixing WANG, Xiangyu ZHENG, Gang LIU, Lili YAN, Xiaolei CHENG, Zhenyu LIU, Peng MIAO, Shujuan YAN, Xufang ZHANG, Shijun WANG, Meijun LI, Boxi DU, Changfang MENG, Xuewen WANG, Mingshuang CUI, Jianpeng WANG, Yongying WANG, Long CHEN, Zhi DONG, Haipeng YU, Zhe CHEN, Song ZHANG, Huiyan MA] CN Beijing A two-channel burner includes a pulverized coal supply mechanism, a transition channel, an inner secondary air guide tube, an outer secondary air guide tube, a combustion stabilizing chamber, and a flow smoothing chamber. The outer secondary air guide tube, the combustion stabilizing chamber, and the flow smoothing chamber are sequentially connected to form a burner body. The pulverized coal supply mechanism passes through an interior of the burner body. The transition channel is fitted over the pulverized coal supply mechanism. The inner secondary air guide tube is disposed between the transition channel and the outer secondary air guide tube and forms an inner secondary air passage together with the transition channel, and forms an outer secondary air passage together with the outer secondary air guide tube. An outlet end of the inner secondary air guide tube is formed to have a flared opening.

[NIU, Fang 牛芳, LUO, Wei 罗伟, WANG, Hanfeng 王翰锋, ZHANG, Hongshun 张红顺, WANG, Naiji 王乃继, JI, Renshan 纪任山, SHI, Liang 石亮, LIANG, Xing 梁兴, GONG, Yanyan 龚艳艳, WANG, Pengtao 王鹏涛, WEI, Yanrong 魏琰荣, LIU, Pengzhong 刘鹏中, LI, Xiaojiong 李小炯, CUI, Yuhong 崔豫泓, QIU, Xing 裘星, JIA, Nan 贾楠, WANG, Zhixing 王志星, ZHENG, Xiangyu 郑祥玉, LIU, Gang 刘刚, YAN, Lili 闫黎黎, LIU, Zhenyu 刘振宇, MIAO, Peng 苗鹏, YAN, Shujuan 颜淑娟, DU, Boxi 杜伯犀, MENG, Changfang 孟长芳, WANG, Xuewen 王学文, WANG, Shijun 王诗珺, CUI, Mingshuang 崔名双, WANG, Jianpeng 王建朋, CHEN, Huaijun 陈怀俊, DONG, Zhi 董智, YU, Haipeng 于海鹏, CHEN, Zhe 陈喆, ZHANG, Song 张松, MA, Huiyan 马慧艳] No. 5, Yulong Street, Caiyu Economic Development Zone 中国北京市大兴区采育镇北京采育经济开发区育隆大街5号, Beijing 102600Caiyu Town, Daxing DistrictBeijing 102600 A two-channel burner and a multi-channel single-cone burner. The two-channel burner comprises a pulverized coal supply mechanism (1), a transition channel (2), an inner secondary airflow guide tube (3), an outer secondary airflow guide tube (4), a burning stabilization cavity (5), and a flow smoothing cavity (6). The outer secondary airflow guide tube (4), the burning stabilization cavity (5), and the flow smoothing cavity (6) are sequentially connected to form a main body of the burner. The pulverized coal supply mechanism (1) passes through an interior of the main body of the burner. The transition channel (2) is fitted on the pulverized coal supply mechanism (1). The inner secondary airflow guide tube (3) is disposed between the transition channel (2) and the outer secondary airflow guide tube (4), and forms an inner secondary airflow channel together with the transition channel (2), and forms an outer secondary airflow channel together with the outer secondary airflow guide tube (4). An outlet end of the inner secondary airflow guide tube (3) is formed to have a flared opening, and an angle of the flared opening is the same as an angle of the burning stabilization cavity (5). The device can divide air into an inner secondary airflow and an outer secondary airflow which separately enter into the burner, such that the pulverized coal and the air are sufficiently mixed. The outer secondary airflow can form, within the burning stabilization cavity (5), a cooling air layer along a wall surface of the burning stabilization cavity (5), thereby preventing soot formation and coking on the wall surface of the burning stabilization cavity (5). A two-channel burner and a multi-channel single-cone burner. The two-channel burner comprises a pulverized coal supply mechanism (1), a transition channel (2), an inner secondary airflow guide tube (3), an outer secondary airflow guide tube (4), a burning stabilization cavity (5), and a flow smoothing cavity (6). The outer secondary airflow guide tube (4), the burning stabilization cavity (5), and the flow smoothing cavity (6) are sequentially connected to form a main body of the burner. The pulverized coal supply mechanism (1) passes through an interior of the main body of the burner. The transition channel (2) is fitted on the pulverized coal supply mechanism (1). The inner secondary airflow guide tube (3) is disposed between the transition channel (2) and the outer secondary airflow guide tube (4), and forms an inner secondary airflow channel together with the transition channel (2), and forms an outer secondary airflow channel together with the outer secondary airflow guide tube (4). An outlet end of the inner secondary airflow guide tube (3) is formed to have a flared opening, and an angle of the flared opening is the same as an angle of the burning stabilization cavity (5). The device can divide air into an inner secondary airflow and an outer secondary airflow which separately enter into the burner, such that the pulverized coal and the air are sufficiently mixed. The outer secondary airflow can form, within the burning stabilization cavity (5), a cooling air layer along a wall surface of the burning stabilization cavity (5), thereby preventing soot formation and coking on the wall surface of the