Four-nozzle water wall

Huali is already developing four-nozzle water-cooled wall pulverized coal gasification; the four-nozzle water-cooled wall water-coal slurry represents an integrated innovation as well, and the industry-university-research collaboration model used by Tsinghua University and Shanxi Fengxi could serve as a reference!

It is recommended that Thorpe start using a set of demonstration devices!

With the gradual development and maturity of pulverized coal gasification, does the water-wall configuration that uses coal slurry as feed lose its relevance? If heat recovery is required, processes such as SHELL and the two-stage powder gasification boiler system are suitable for power generation. For chemical industries where heat recovery is not necessary, gasifiers like GSP, aerospace-type, and two-stage quenching systems can be used, and all of these are performing well in practice. I heard that the GSP technology in Shenning is operating very well, and more of this technology will be used in its coal-to-oil projects. As for the development of space furnaces in China, there’s little to say about it. The two-stage quenching process gasifier developed by Xi’an Thermal Power Institute has been operated successfully at Shilin Chemical Industry in Inner Mongolia, and it has now set a record for the shortest time required to complete a successful trial run of a coal powder gasification system in the industry. From an investment perspective, coal water slurry also does not offer any significant advantages. Moreover, the fluidized-bed U-Gas gasifier developed through a joint venture between US SES and Yima Coal Industry has also been successfully tested, and it is said that the U-Gas gasifier can burn any type of coal and is easy to operate. In any case, there are too many types of gasifiers. What are the advantages of the four-nozzle water-cooled wall gasifier for coal slurry? Seeking advice! ! !

Yankuang and Huali are developing this technology; a demonstration unit is under construction in Kaiyang, Guizhou, and the equipment is manufactured by Dongfang Boiler

Coal powder plants are constrained by coal powder transportation, so the pressure level cannot be too high, which limits their scale. Considerable investment has been made in such plants in China, yet the results have been minimal, as the technology itself still has defects. The pressure level of water-coal slurry can be as high as 6.5 MPa or even 8.7 MPa ； The successful demonstration of Tsinghua’s second-generation furnace provides an excellent model: long operation cycle, wide adaptability to different coal types, low consumption with high output. The most important aspect is the high operational stability; according to Toyoki, once the water wall is put into operation, there is little need to adjust any parameters, and its operation remains very stable. Personally, I believe that four-nozzle water-cooled wall stoves would have a good market if they could be developed and promoted.

Regarding this issue: lol, Huali has indeed conducted some research on Shell’s approach – using a four-nozzle arrangement with an offset angle, and introducing swirl to facilitate slag formation. By changing the direction of gas flow from upward to downward along with the slag, this design is inherently more robust and advantageous compared to Shell’s approach. At the moment, it’s mainly because the control system for pulverized coal is too complex. Let’s take it step by step; the potential is good.

Currently, research is focused on coal powder technology, right? Furthermore, the two-stage design developed by Xi’an Thermal Power Institute also included six nozzles.

It’s an old post from three years ago; I came across relevant information today: http://industry.wanfangdata.com.cn/sh/Detail/Patent?id=Patent_CN201410075026.2 A combustion chamber and a multi-nozzle opposed-type water-coal slurry gasification furnace with such a combustion chamber, along with their applications. This invention relates to a combustion chamber and a multi-nozzle opposed-type water-coal slurry gasification furnace with such a combustion chamber, as well as their applications. The combustion chamber includes a metal furnace shell (1), a coiled water-cooling wall interior component (2), a preheating nozzle chamber (3) located at the top of the combustion chamber, a process nozzle chamber (4), and a gas-slag outlet (5) situated at the center of the lower end of the combustion chamber； The process nozzle chambers (4) are arranged in 1 to 3 layers horizontally in the upper part of the combustion chamber, with 1 to 3 pairs of such process nozzle chambers (4) in each layer ； The coil-type water wall inner component (2) is formed by winding 2 to 10 metal tubes of the same specification, with the inlet and outlet ends of these metal tubes connected to the header. The combustion chamber designed in this invention **expands the range of coal types that can be used in the water-coal slurry gasification process; its components can be replaced or repaired individually, and the process nozzles installed in the various process nozzle chambers 4 can operate either in their entirety or partially**, thereby increasing the operating range of the gasification furnace. Patent type: Invention patent
Application (patent) number: CN201410075026.2
Application date: March 3, 2014
Publication (announcement) date: May 28, 2014
Publication (announcement) number: CN103820160A
Main classification numbers: C10J3/48, C10J3/00, C, C10, C10J, C10J3
Classification numbers: C10J3/48, C10J3/00, C10J3/50, C10J3/00, C10J3/76, C10J3/00, C, C10, C10J, C10J3, C10J3/48, C10J3/00, C10J3/50, C10J3/00, C10J3/76, C10J3/00
Applicant (patentee): East China University of Science and Technology
Inventors: Zhou Zhijie, Liang Qinfeng, Yu Guangsuo, Liu Haifeng, Gong Xin, Dai Zhenghua, Chen Xueli, Wang Yifei, Wang Fuchen, Wang Xingjun, Guo Xiaolei, Li Weifeng, Xu Jianliang, Guo Qinghua
Address of the main applicant: No. 130, Meilong Road, Xuhui District, Shanghai 200237
Patent agency: Shanghai Xintian Patent Agency Co., Ltd. 31213
Agent: Hu Hongfang
Country and province code: Shanghai; 31
Summary of the invention: A combustion chamber, characterized in that it comprises a metal furnace shell (1), a coiled water-cooling wall interior component (2), a preheating nozzle chamber (3) located at the top of the combustion chamber, a process nozzle chamber (4), and a gas-slag outlet (5) situated at the central portion at the lower end of the combustion chamber ； The process nozzle chambers (4) are arranged in 1 to 3 layers horizontally within the upper part of the combustion chamber; each layer contains 1 to 3 pairs of such process nozzle chambers (4), and the process nozzle chambers (4) in each layer are evenly distributed along the circumferential direction of the gasification furnace ； The coil-type water wall inner component (2) is formed by winding 2 to 10 metal tubes of the same specification, with the inlet and outlet ends of these metal tubes connected to the header ； The vertical axis of the coiled water wall inner component (2) coincides with the vertical axis of the metal furnace shell (1). Legal status: Public, Public,

Regarding last year’s patent announcements, does any of you know if there are any actual applications in China for this \"multi-nozzle water-cooled wall water-coal slurry\" technology?