Chengdu Kete Ruixing Technology Co., Ltd

Main technology introduction

1 Hydrogen production unit

1.1 Methanol cracking hydrogen production unit

Methanol cracking PSA hydrogen production technology is a technology that takes methanol and water as raw materials, converts them into mixed gas through catalyst under certain temperature and pressure, and then purifies hydrogen through PSA.

Technical features:

·The production technology is mature and the operation is safe and reliable.

·Easy source of raw materials, convenient transportation and storage, and stable price.

·The process is simple.

·The device is highly automatic and easy to operate.

·Small land occupation, low investment and short payback period.

·Low energy consumption and low product cost.

·No environmental pollution.

Reaction principle:

CH3OH→CO+2H2-Q

CO+H2O→CO2+H2+Q

Main performance indicators
Unit size	50~7500Nm3/h (single train)
purity	99%~99.999%
pressure	0.8~2.5MPa
temperature	normal atmospheric temperature

1.2 Natural gas conversion hydrogen production technology

This technology uses natural gas for pressurized desulfurization to react with steam in a special converter filled with catalyst to generate conversion gas containing hydrogen, carbon dioxide and carbon monoxide. After recovering some heat from the waste boiler, CO in the conversion gas is converted into CO2 through conversion, and the conversion gas is purified by pressure swing adsorption (PSA) to obtain qualified product hydrogen.

Technical features:

·The production technology is mature and the operation is safe and reliable.

·The operation control is reliable and practical, with a high degree of automation.

·Low operation cost and short payback period.

·PSA analysis gas can be burned back to reduce fuel consumption and exhaust emissions.

Reaction principle

CH4+H2O→3H2+CO-Q

CO+H2O→H2+CO2+Q

Main performance indicators
Unit size	400~20000Nm3/h
purity	99%~99.999%
pressure	1.5~2.5MPa
temperature	normal atmospheric temperature

1.3 Hydrogen production technology from coal

Raw coal and steam react in the gas generator to generate water gas. The qualified product hydrogen can be obtained after the water gas is dedusted, purified, desulfurized, compressed, transformed, refined desulfurized, and then decarburized and hydrogen extracted.

Reaction principle

C+H2O→H2+CO-Q

CO+H2O→H2+CO2+Q

Main performance indicators
Unit size	500~20000Nm3/h
purity	98%~99.999%
pressure	0.5~3.0MPa
temperature	normal atmospheric temperature

2 PSA purification and decarburization technology

According to the specific requirements of users and production characteristics Reasonable technical scheme, process route, adsorbent type and ratio to ensure the yield of effective gas and the stability of indicators.

The adsorbent adopts dense phase filling technology to further reduce the dead space of the bed and improve the recovery rate of effective components.

The operation scheme adopts advanced and mature control software package, which can automatically optimize the adsorption time. This function can ensure the long-term economic operation of the device, without being affected by the level of operators and the degree of meticulous operation.

The PSA program control valve with unique technology has a service life of more than 1 million times.

Recover pure carbon dioxide from various carbon dioxide rich gas mixtures. Its feed gas, such as lime kiln tail gas, fermentation gas, shift gas, natural mine gas and other carbon dioxide containing gas sources, has a CO2 purity of 98~99.99%.

2.1 Recovery of pure hydrogen from various hydrogen containing gas mixtures

The feed gas is as follows:

Shift gas, refined gas, semi water gas, city gas, coke oven gas, fermentation gas, methanol tail gas, formaldehyde tail gas, refinery catalytic cracking dry gas, refinery reforming tail gas, and other hydrogen containing gas sources. The purity of H2 can reach 98~99.999%.

2.2 Carbon monoxide separation and purification (PSA － CO)

The pure carbon monoxide is recovered from various carbon monoxide rich gas mixtures. Its feed gas includes semi water gas, water gas, copper washing regeneration gas blast furnace gas and yellow phosphorus tail gas. Other gas sources containing carbon monoxide, with CO purity of 98~99.9%.

2.3 Removal of carbon dioxide (PSA － CO2)

Carbon dioxide in shift gas is removed, which is suitable for decarburization in synthetic ammonia and methanol production processes and other occasions where carbon dioxide needs to be removed.

2.4 Biogas concentration and purification

The technology is that the methane rich (CH4) biogas is pressurized by the compressor, then desulfurized, and the impurities are removed by pressure swing adsorption technology to obtain concentrated high-purity methane gas.

Technical features:

·The process flow is simple and reasonable, and the operation is convenient.

·Small floor area.

·Large processing scale, high yield and high product purity.

·The technical level is domestic.

Main performance indicators
Unit size	100~10000Nm3/h
Methane purity	80%~99 %
Methane yield	75%
pressure	0.4~3.0MPa
temperature	normal atmospheric temperature

2.5 Removal of hydrocarbon components above ethane (PSA － C2)

Remove hydrocarbons above C2 from natural gas and associated gas of oil field to produce pure methane.

Decarbonization and hydrogen production projects have been successfully operated in dozens of units nationwide, and natural gas decarbonization and above projects have been successfully put into operation in Shandong, Shanxi, Hunan, Liaohe Oilfield and other companies.