Professional Manufactuer Double Stage Hot Coal Gasifier Plant With ISO,CE

Description

Double stage coal gasifier(diameter 2m,2.6m,3.2m,3.4m,3.6m,4m,gas output from 200Nm3/h to 14,000Nm3/h). Two-Stage Coal Gasifier is specially designed for the gasification of bituminous coal with higher gas heat value than that of single-stage coal gasifier and it has good environmental protection performance. Tar is removed from coal in the pyrolysis to form free flowing light oil, which can be recycled with extensive application.

Coal gasification theory

Basic chemical reaction Producer gas is made by the gasification agent, which is mixture of steam and air, goes through red-hot fixed burning bed. The oxygen and steam content in the air react with the carbon in the fuel, generate the producer gas with ingredients like CO, CO2, H2, CH4, C2H4, N2 etc.

Reaction of steam and carbon is endothermic reaction: C + H2O= CO + H2

When oxygen and carbon react, then heat output: 2C + O2 =2CO

Reaction of carbon monoxide and steam: CO + H2O = CO2 + H2

Some steam here reacts with carbon monoxide. When every volume of carbon monoxide translates into carbon dioxide, generates the same volume of hydrogen at the same time. In the reducing zone, quick reaction is occurred when the temperature is below 1200 Celsius degree . CO2 + C = 2CO and H2O + C=H2 + CO

When the coal gas goes through the reducing zone, flammable gas content rises rapidly, carbon dioxide and steam content decrease. Across the reducing zone, a part of coal gas is exported, flows through bottom cyclone and wind cooler, this part of gas is called “downstage coal gas”, its temperature is around 400-550 Celsius degree.

In the carbonation stage, the coals added in the gasifier are dried, preheated and carbonated, generate steam, tar and coal gas, exported from the top of gasifier together, this part of gas is called “up-stage coal gas”, its temperature is around 100-150 Celsius degree.

Hot gas process flow chart

Put the 40~60mm coal into the coal bin by the lifting equipment, and then the program controlled coal feeder charging the coal into the double stage gasifier . The air blower blowing the mixed air and steam as the gasification agent, from the air and steam mix chamber at the bottom of the gasifier.

The gasification agent reacted with 1200°Ctemperature semicoke at the gasifying section of the gasifier,

and generated the combustible gas.The component of the gas is CO is about 31~33%, H2 is about 9~10%, CH4 is about 0.4%~0.5% meanwhile at the carbonize section of the gasifier,

utilize the waste heat of the down stage gas make the carbonizing to generate CO is about 29~31%.H2 is about 17~19%

CH4 is about 1~3%, CnHm is about 0.2~0.4% combustible gas.The coal gas temperature of the carbonization section is around 100~150C,

the gas flow through the electric detarrer to get rid of the dust and tar,and then flow into the gas main. The water and tar gathered from the bottom of the detarrer was sending to the tar tank.

The coal gas temperature of the gasifying section is around 550~600°C,

flow through the cyclone dust catcher to removing the big granular dust, and then flow into the gas main.

The two stage gas was combined at the gas main, and its temperature is around 150~250C. The hot gas removing tar technology takes full advantage of the sensible heat of the gas.And it is a good choice for there is less demanding for the gas cleanness requirement.

 Specifications

 1.Waterproof packing with the international export standard by 20ft, 40ft, 40hp container.

1.Pre-sale services:

1) Selecting equipment type;

2) Designing and fabricating the products in accordance with the special requirements of the clients;

3) Training technical personnel for our clients;

4) Providing construction and technology consultations or working out proper construction schemes for those new, special or difficult projects.

2.Services provided during the sale:

Respect our clients; present the clients with ease, relaxation and a surprise; devote ourselves to improve the total value of our clients.

1) Checking products acceptance ahead of delivery;

2) Introducing the service system to our clients.

3. After-sale services:

Improve the added value of our products, and let the clients free from the using troubles:

1) Assisting the clients preparing for the first construction scheme;

2) Installing and testing the equipments;

3) Training the first-line operators on site;

4) Examining the equipment regularly;

5) Taking the initiatives to eliminate the failure(s) rapidly at site;

6) Distributing the guarantee fittings door-to-door;

7) Providing technical exchanging;

8) Providing maintenance for big item

Henan Yuhong Heavy Machinery Co., Ltd was founded in 1997 and registered in 2012. It's the first company engages in a variety of industrial furnace, such as research and development projects, designs and manufacture, installation and technical consulting.

Our main products are coal gasifier, biomass briquette machine, wood pellet machine and biomass burner,rotary dryer ,kiln Which are with good quality, meet international quality certification, ISO9000 and CE.

please supply following informations 

1.the coal qulaity 

2.what fuel are replaced by the coal gasifier,and the fuel consumption

3.temperature requirement

the distance from the coal gasifier plant to the final using working site