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On March 16th, the reporter learned from the olefin company of Shenhua Huaning Coal Group Coal Chemical Company that the company had an annual output of 500,000 tons of olefins (consuming 1.67 million tons of coal-based methanol annually). The first-ever GSP dry coal gasification technology device has been implemented. 110% load continuous operation, the effective gas (CO + H2) content in the synthesis gas is 94% ~ 95%, the carbon conversion rate is about 98.5%, the single furnace full load continuous stable operation time is up to 109 days. The production index has reached a record, which proves that the GSP furnace is operating maturely, and also proves the feasibility and applicability of the down-spray dry powder gas flow-bed furnace type.
Huang Bin, chief engineer of the olefin company of Shenhua Ningmei Coal Chemicals Co., Ltd., briefed the reporter whether whether the underflow pulverized-coal pulverized-air flow bed can achieve long-term, stable, and efficient operation depends on the stability of the pulverized coal conveying system, nozzles, and gasification. The matching of the flow field structure of the furnace and the optimization design of the slag discharge system, but the key is whether the flow field structure design of the gasifier is easy to control. GSP dry pulverized coal gasifier is a down-flow coal pulverized coal gas flow bed with simple structure, low system cost, reasonable flow field structure design of gasifier, obvious dust removal effect, and almost no detectable syngas dust content. The overall system configuration is good, the effective gas content in the synthesis gas is high, the specific oxygen consumption is as low as 310Nm3/kNm3(CO+H2), and the residual carbon content in the ash residue is relatively low, only 0.6%. Last year, the single furnace full-load continuous stable operation averaged 75 days and a maximum of 109 days. This year, the single furnace full-load continuous stable operation target is 120 days.
The entrained flow bed is the mainstream of large-scale coal gasification technology. The pulverized coal pulverized-air flow bed has the advantages of large single-furnace capacity, no tar and phenols in the gas and simple treatment of sewage, and is divided into up-spraying according to the injection method in which pulverized coal enters the gasifier. And spray two forms. The down-flow pulverized coal pulverized entrained flow gasification consists of five main parts: a nozzle, a water wall structure gasification chamber, a quench chamber sprayed with a quench ring, a venturi scrubber, and a carbon black water scrubber. This type of structural coal has strong adaptability, high active components in gas, high gasification efficiency and carbon conversion rate, and is prioritized in the selection of gasification technology.
According to report, there are currently 6 kinds of GSP gasifiers, aerospace furnaces, Dongfang furnaces, Colin furnaces, five-ring furnaces, and Shell Wison 6 types of underflow pulverized coal pulverized coal gas flow furnaces. These furnaces use their own patents, have different scales, or have operational performance, or are in the drive phase.
Tang Hongqing, technical consultant of China National Synthetic Oil Engineering Co., Ltd., said that a variety of under-sprayed pulverized coal pulverized-air flow furnaces will be fully deployed in terms of investment, high localization rate, reasonable overall design, operation effect, scale, and performance. Competition will help China develop the development of coal chemical industry. Tang Hongqing also pointed out that the lower jet type entrained flow bed is the application direction of coal gasification technology, but it is not the only direction. Due to the different types of raw coal, coal slurry gasification, fixed bed, fluidized bed and other furnace types still have suitable uses.
Huang Bin, chief engineer of the olefin company of Shenhua Ningmei Coal Chemicals Co., Ltd., briefed the reporter whether whether the underflow pulverized-coal pulverized-air flow bed can achieve long-term, stable, and efficient operation depends on the stability of the pulverized coal conveying system, nozzles, and gasification. The matching of the flow field structure of the furnace and the optimization design of the slag discharge system, but the key is whether the flow field structure design of the gasifier is easy to control. GSP dry pulverized coal gasifier is a down-flow coal pulverized coal gas flow bed with simple structure, low system cost, reasonable flow field structure design of gasifier, obvious dust removal effect, and almost no detectable syngas dust content. The overall system configuration is good, the effective gas content in the synthesis gas is high, the specific oxygen consumption is as low as 310Nm3/kNm3(CO+H2), and the residual carbon content in the ash residue is relatively low, only 0.6%. Last year, the single furnace full-load continuous stable operation averaged 75 days and a maximum of 109 days. This year, the single furnace full-load continuous stable operation target is 120 days.
The entrained flow bed is the mainstream of large-scale coal gasification technology. The pulverized coal pulverized-air flow bed has the advantages of large single-furnace capacity, no tar and phenols in the gas and simple treatment of sewage, and is divided into up-spraying according to the injection method in which pulverized coal enters the gasifier. And spray two forms. The down-flow pulverized coal pulverized entrained flow gasification consists of five main parts: a nozzle, a water wall structure gasification chamber, a quench chamber sprayed with a quench ring, a venturi scrubber, and a carbon black water scrubber. This type of structural coal has strong adaptability, high active components in gas, high gasification efficiency and carbon conversion rate, and is prioritized in the selection of gasification technology.
According to report, there are currently 6 kinds of GSP gasifiers, aerospace furnaces, Dongfang furnaces, Colin furnaces, five-ring furnaces, and Shell Wison 6 types of underflow pulverized coal pulverized coal gas flow furnaces. These furnaces use their own patents, have different scales, or have operational performance, or are in the drive phase.
Tang Hongqing, technical consultant of China National Synthetic Oil Engineering Co., Ltd., said that a variety of under-sprayed pulverized coal pulverized-air flow furnaces will be fully deployed in terms of investment, high localization rate, reasonable overall design, operation effect, scale, and performance. Competition will help China develop the development of coal chemical industry. Tang Hongqing also pointed out that the lower jet type entrained flow bed is the application direction of coal gasification technology, but it is not the only direction. Due to the different types of raw coal, coal slurry gasification, fixed bed, fluidized bed and other furnace types still have suitable uses.
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