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"WanFeng" fluidized bed coal gasifier
TIME:2014-10-24 15:07:41 | VIEW:

"Wanfeng" fluidized bed coal gasifier process description:

 

After passing raw coal handling, coal preparation system fed by the main bunker. Raw coal bunker through the lower part of the main vice bunker by the stoker fed into the gasifier. Pressurized air from the blower, and post-steam mixture, preheated by the heat exchanger, as a gasifying agent through the porous nozzle into the gasifier. Gasifying agent to the raw coal into the furnace fluidized good and oxidation reactions. Raw coal and gasification agent in direct contact with the bottom of the gasifier to form a dense phase segment, was boiling like, including gas-solid two-phase mass, at a temperature of violent reaction. Unreacted particles form a dilute phase section by the gas produced by the reaction carried to the upper part of the gasifier. Since the crude gas outlet temperature can reach 900 ° or more, the coal tar, phenols cracking at high temperatures, the gas to form an effective ingredient. Impurities and ash into the furnace heavy fall at the bottom of the gasifier after the reaction, the scum from the slag discharged. The unreacted portion of fine particles out of the furnace with coal belt, gas, solid particles are separated in a high temperature separator solids feeding device by returning the bottom of the hot separator re-enters the gasifier, the reaction again, forming a loop. After baked at high temperature separator gas dust into the multi-stage heat exchanger cooled cooling system by dust purification, and then finally cooled to the temperature of the process requirements into the gas storage cabinets, gas turbocharger boost after external supply.

 

"Wanfeng" pulverized coal gasification process characteristics:

"Wanfeng" pulverized coal gasifier is developed according to the principle of coal gasification coal gas unit. Due to the use of a number of patented technologies with independent intellectual property rights, making the "Matthey" pulverized coal gasifier system has the following salient features:

1. Fuel wide adaptability: The gas-generating apparatus using lignite, long flame coal, non-caking or weakly caking coal, etc., basically meet the activity, the ash melting point and other conditions who can be used as raw coal. Due to a wide range of coal distribution, low price, can significantly decrease the cost of gas.

2. The raw coal pretreatment simple: "Wanfeng" pulverized coal gasification coal particle size generally less than 10mm, raw coal preparation system greatly simplified.

3. Clean Green: the crude gas is no tar, phenol and other substances, so no phenol wastewater discharge gas production to meet the state to promote clean coal production and environmental protection requirements.

4. Operational safety is simple: The system uses DCS automatic control system, high degree of automation, greatly reducing the labor intensity.

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