Process for pressurized gasification of dry coal fines
A technology of pressurized gasification and dry pulverized coal, applied in the direction of granular/powder fuel gasification, etc., can solve the problems of small adjustment range of load and gas composition, rat holes, channel flow, etc., to achieve smooth transportation, low pollution, The effect of reducing the feed air pressure
Inactive Publication Date: 2007-05-30
煤炭科学研究总院北京煤化工研究分院 +3
View PDF3 Cites 6 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
In the Shell and Prenflo gasification processes, the gasifier is set up with single-stage multi-nozzles installed below, and the load and gas composition adjustment range of this type of furnace is relatively small; the dry coal powder sending tank is top-feeding and bottom-dense phase The balanced discharge mechanism relies on the feeding method of gravity settlement in the tank, so there are sometimes abnormal phenomena such as "bridging", "rat hole" and "channel flow" at the discharge port
In the GSP gasification process, the gasifier is set with a single nozzle on the top, which also has the disadvantage of small adjustment range of load and gas composition. The dry coal powder sending tank is a top feeding and top dense phase discharging mechanism, but only All the way built-in pneumatic conveying tube
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0017] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0018] As shown in Figure 1 and Figure 2, the equipment system of the present invention mainly includes a dry coal powder dense phase feeding system, a gasification system, a cooling system and a purification system.
[0019] Dry coal powder pressurized gasification method of the present invention mainly following process step:
[0020] 1. Dense phase feeding of dry coal powder (as shown in Figure 1 and Figure 3)
[0021] 1. The purchased dry pulverized coal is transported to the site by the tanker 1, and the pulverized coal is added to the pulverized coal storage bin 3 through the cyclone separator 2 by means of pneumatic conveyance, and the exhaust gas from the cyclone separator 2 and the pulverized coal storage bin 3 is passed into the cloth bag Dust collector 4 filters.
[0022] 2. The pulverized coal in the pulverized coal storage bin ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The coal powder pressure gasifying process includes the following steps: feeding coal powder to two transporting tanks via cyclonic separator, coal pump, coal adding bins and pressure varying tanks; mixing overheat steam and oxygen inside two mixer and feeding the mixed gas to gasifying furnace; feeding coal powder with carrier gas from the transporting tanks to nozzles; gasifying coal powder in the first section of the gasifying furnace to produce coarse gas with CO and H2 as main components, dry distillation, pyrolyzing, secondary cracking of volatile component and decomposing water vapor in the second section of the gasifying furnace; chilling mixed coarse gas to solidify depositing cinder grain; and passing the coarse gas through afterheat boiler, duster, spraying washing tower and decompressor before outputting from the system. The present invention may be used widely in power generation, gas supplying and other fields.
Description
technical field [0001] The invention relates to a coal gasification method, in particular to a pressurized gasification method of dry coal powder. Background technique [0002] my country's primary energy structure is characterized by rich coal but poor oil and gas. In terms of energy utilization in my country at the present stage, there are not only serious environmental pollution problems caused by burning coal, but also increasingly tight oil and natural gas supply problems. Therefore, under the influence of multiple levers such as environmental protection, economic development and energy security, the development of high-efficiency, low-pollution clean coal technologies such as coal-based synthesis (oil products, chemicals) and combined cycle power generation is crucial to the sustainable development of the national economy. It is of great significance, and in the clean coal combustion technology, coal gasification is one of the key technologies. [0003] Dry coal powde...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): C10J3/46
Inventor 徐振刚王乃继步学朋纪任山忻仕河许世森任永强沈湘林门长贵
Owner 煤炭科学研究总院北京煤化工研究分院