Coke-oven gas liquefaction plant-CYY Energy

Coke-oven gas liquefaction plant

Coke oven gas is a high-calorific gas, crude gas or exhaust gas due to its high combustible content. It refers to the use of several bituminous coals to form coking coal. After high-temperature carbonization in coke ovens, the combustible gas produced by coke and tar products is a by-product of the coking industry.
Coke oven gas is a mixture whose output and composition vary depending on the quality of the coking coal and the conditions of the coking process. Usually, 300-350m3 (standard state) coke oven gas can be produced per ton of dry coal. The main components are hydrogen (55% -60%) and methane (23% -27%). It also contains a small amount of carbon monoxide (5% -8%), unsaturated hydrocarbons above C2 (2% ~ 4%), carbon dioxide. (1.5% -3%), oxygen (0.3% -0.8%) and nitrogen (3% -7%). Among them, hydrogen, methane, carbon monoxide and C2 or higher unsaturated hydrocarbons are flammable components, and carbon dioxide, nitrogen, and oxygen are non-flammable components.
Low-temperature liquefaction adopts SMRC + N2 throttling refrigeration process, and high and low-pressure rectification towers are set at the same time. CH4, H2, N2, CO and other gases in coke oven gas are separated by low-temperature rectification, with low energy consumption, good stability, and strong load regulation ability

Product Details

The cryogenic liquefaction adopts the MPC+N2 refrigeration process, and the high and low pressure rectification towers are set at the same time. The CH4, H2, N2, CO and other gases in the coke oven gas are separated by the cryogenic rectification method, which has low energy consumption, good stability and the ability to adjust load is strong.

Characteristics of coke oven gas:
1. The calorific value of coke oven gas is 16720—18810kJ/m3, and the combustible composition is high (about 90%);
2. Coke oven gas is a colorless and odorous gas;
3. Coke oven gas is toxic due to the presence of CO and a small amount of H2S;
4. Coke oven gas contains more hydrogen, burning faster and shorter flame;
5. If the coke oven gas is not well cleaned, it will contain more tar and naphthalene, which will block the pipes and fittings and bring difficulties to the fire control work;
6. The ignition temperature is 600~650 °C.
7. Coke oven gas contains H2 (55~60%), CH4 (23~27%), CO (5~8%), CO2 (1.5~3.0%), N2 (3~7%), O2 (<0.5 %), c2h4 (2~4%); density is 0.45~0.50 Kg/Nm3.

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CYY Energy

Phone：+86 15397130007

Email：info@cyyenergy.com

Address：No. 633 Linping Avenue, Yuhang Economic Development Zone, Hangzhou, China, 311100

Factory address: Chongfu Development Zone, Jiaxing, China, 314500

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