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Hydrogen production from coke oven gases
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VOC tail gas disposal
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Flue gas denitrification SCR、SNC
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Oxygen purification and utilization
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Special acid regeneration equipment
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Technology of desulfurization and CO2 removal using NHD method
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CO2 removal by pressure swing adsorption
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Valve
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Coal gas organic sulfur fine removal technology
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Methane extraction technology - biogas
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Waste acid regeneration
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Hydrogen purification technology by pressure swing adsorption
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Coke gas purification technology
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MEA-MDEA-NHD Desulfurization Technology
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Unit desalting and demineralization equipment and special resin
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absorbent
Hydrogen production by splitting methanol
This process is based on the convenient source of methanol and desalting water as raw materials, at a temperature of 220-280°C, a special catalyst catalyzes the conversion into converted gas containing hydrogen and carbon dioxide, the principle of which is as follows:
Main reaction: CH3OH=CO+2H2 +90.7 kJ/mol
CO+H2O=CO2+H2 -41.2 kJ/mol
General reaction: CH3OH+H2O=CO2+3H2 +49.5 kJ/mol
Auxiliary reaction: 2CH3OH=CH3OCH3+H2O -24.9 kJ/mol
CO+3H2=CH4+H2O -+206.3 kJ/mol
Description
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use:
Hydrogen production by splitting methanol
Description of technology
This process is based on the convenient source of methanol and desalting water as raw materials, at a temperature of 220-280°C, a special catalyst catalyzes the conversion into converted gas containing hydrogen and carbon dioxide, the principle of which is as follows:
Main reaction: CH3OH=CO+2H2 +90.7 kJ/mol
CO+H2O=CO2+H2 -41.2 kJ/mol
General reaction: CH3OH+H2O=CO2+3H2 +49.5 kJ/mol
Auxiliary reaction: 2CH3OH=CH3OCH3+H2O -24.9 kJ/mol
CO+3H2=CH4+H2O -+206.3 kJ/mol
The converted gas resulting from these reactions condenses and consists of
H2 73～74%
CO2 23～24.5%
CO ～1.0%
CH3OH 300ppm
H2O saturated
Pure hydrogen is easily recovered from this conversion gas by separation using technologies such as pressure swing adsorption.
At present, there are about 100 enterprises in China using this technology, and after several years of operation, it has proven that the technology is mature, easy to operate and stable in operation.
Specifications
1、The splitting and conversion of methanol vapor on a special catalyst is carried out at the same time.
2、By adopting pressure operation, the resulting cracked gas can be directly supplied to the PSA hydrogen purification system without further injection, which reduces energy consumption.
3、Compared with electrolysis method, electricity consumption is reduced by more than 90%, operating costs can be reduced by 40 - 50%, and the purity of hydrogen is high. Compared with the coal gas generator, it shows that this technological installation is simple, convenient and stable in operation. Although the cost of raw materials for coal generator is a little lower, but the process is long with a large investment, and the pollution is large, there are many impurities, desulfurization and purification are necessary, etc. Not suitable for small and medium devices.
4、Special catalysts feature high activity, good selectivity, low operating temperature and long service life.
5、Using thermally conductive oil as the circulating heat transfer fluid, the process requirements are satisfied and low investment, low energy consumption and reduced operating costs are obtained.
In-line diagram
Typical Results
| 1 | Datan Electric Power Chemical Company | 10000Nm3/h | methanol tail gas | 99.90% | PSA (5.0 MPa.G) |
| 2 | Taizhou Petrochemical Company | 700Nm 3/h | methanol | 99.99% | methanol cracking + PSA |
| 3 | Shandong Dongming Yuhuang Chemical Company | 400Nm 3/h | methanol | 99.99% | methanol cracking + PSA |
| 4 | Shandong Boxing China Resources Oil Co., Ltd | 1000Nm 3/h | methanol | 99.99% | methanol cracking + PSA |
| 5 | Liaoning Panjin Hongda Petrochemical Company | 5000Nm 3/h | methanol | 99.99% | methanol cracking + PSA |
| 6 | Shandong Dongying Aoxing Petrochemical Company | 6000Nm 3/h | methanol | 99.99% | methanol cracking + PSA |
| 7 | Shandong Petrochemical Company | 8000Nm 3/h | methanol | 99.99% | methanol cracking + PSA |
| 8 | Shandong Petrochemical Company Dongying Sanhe | 12000Nm 3/h | methanol | 99.99% | methanol cracking + PSA |
| 9 | Taiwan Banshun Chemical Co Ltd | 800Nm 3/h | methanol | 99.99% | methanol cracking + PSA |
| 10 | Thailand SIAM SORBITOL CO., LTD. | 300Nm 3/h | methanol | 99.99% | methanol cracking + PSA |
| 11 | Zhuhai Changcheng Chemical Co., Ltd. | 3000Nm3/h | methanol | 99.99% | methanol cracking + PSA |
| 12 | Shandong Petrochemical Company Haike Ruilin | 4500Nm3/h | methanol | 99.99% | methanol cracking + PSA |
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