Crude methanol refinery technology
Proprietary Technology and Plants
Technology Introdction:
Crude methanol rectification process includes single-column process, two-column process, three -column process and energy-saving three-column process. The feature of Four processes are as follows:
No.Crude methanol rectification processFeature
1single-column process1.Methonal-water regroup, separate in one column
2.Advatange: investment saving, reduce heat energy consumption
3.Disadvantage: the purity of refined methonal is not very pure.
2two-column process1.The combination of pre-recification column and main rectification column
2.Refine crude methonol including dimethyl ether and other light components and reducing impurities
3.Advantage: simple process ,user friendly, less investment
4.Disadvange: high energy consumption, low purity
3three -column process1.Three rectification column work under the same pressure. The third rectification column produces
2.Advantage: high purity
3.Disadvantage: high investment. Need more area
4energy-saving three-column process1.Two main rectification columns and final rectification column, the first main rectification column is pressure-increasing column. The second one is normal pressure column. Two columes produce 50%-50%
2.Advantage: envery saving, reduce the ethanol content of the purified methanol, product quality is better; methanol yield is higher, low operating costs
3.Disadvantage: high one-time investment
Our company's crude methanol distillation technology is based on the fourth energy-saving three-tower process, the main feature is to fully optimize the heat transfer network, so that the use of steam and circulating water to a minimum, in order to achieve energy conservation and investment optimization.
(1) High yield of the process: fine methanol recovery rate of 99.86% (refined methanol production and feed the amount of methanol contained in the ratio)
(2) Using a mature double-effect distillation method: the use of pressurized overhead gas phase for the atmospheric tower reboiler heat source.
To 300,000 tons / year 90.82% methanol distillation as an example.
Crude methanol refinery technology Proprietary Technology and Plants Technology Introdction: Crude methanol rectification process includes single-column process, two-column process, three -column process and energy-saving three-column process. The feature of Four processes are as follows: No.Crude methanol rectification processFeature 1single-column process1.Methonal-water regroup, separate in one column 2.Advatange: investment saving, reduce heat energy consumption 3.Disadvantage: the purity of refined methonal is not very pure. 2two-column process1.The combination of pre-recification column and main rectification column 2.Refine crude methonol including dimethyl ether and other light components and reducing impurities 3.Advantage: simple process ,user friendly, less investment 4.Disadvange: high energy consumption, low purity 3three -column process1.Three rectification column work under the same pressure. The third rectification column produces 2.Advantage: high purity 3.Disadvantage: high investment. Need more area 4energy-saving three-column process1.Two main rectification columns and final rectification column, the first main rectification column is pressure-increasing column. The second one is normal pressure column. Two columes produce 50%-50% 2.Advantage: envery saving, reduce the ethanol content of the purified methanol, product quality is better; methanol yield is higher, low operating costs 3.Disadvantage: high one-time investment Our company's crude methanol distillation technology is based on the fourth energy-saving three-tower process, the main feature is to fully optimize the heat transfer network, so that the use of steam and circulating water to a minimum, in order to achieve energy conservation and investment optimization. (1) High yield of the process: fine methanol recovery rate of 99.86% (refined methanol production and feed the amount of methanol contained in the ratio) (2) Using a mature double-effect distillation method: the use of pressurized overhead gas phase for the atmospheric tower reboiler heat source. To 300,000 tons / year 90.82% methanol distillation as an example.
Crude oil supply is within our reach from several regions. Only for refineries.
Methanol with the mentioned specifications
Methanol Technical Data Sheet Property Specification Analytical Test Methanol Purity WT % 99.85 min IMPCA 001-21 Water W/W% 0.100 Max ASTM E91064 Ethanol W/W% 0.0050 Max IMPCA 001-21 Specific Gravity 20/20,C 0.7928 Max. ASTM D-4052 Acetone, W/W% 0.0030 Max. IMPCA 001-21 Permanganate Time Test @ 15 C, Minutes 60 Min. ASTM D-1363 Non Volatile Matter, mg/1000 ml 8 Max. ASTM D-1353 Distillation Range @ 760mm Hg C 1.0 Max., ASTM D-1078 Color Pt-Co, APHA 5 Max. ASTM D-1209 Carbonizable APHA 30 Max ASTM E-346 Total Iron, mg/kg 0.10 Max ASTM E-394 Chloride as CI, mg/kg 0.5 Max ASTM D-512 Appearance Clear and free from suspended matter IMPCA 003-98 Acidity as CH3COOH, W/W% 0.0030 Max, ASTM D-1613 Hydrocarbons Pass Test ASTM D-1722 Sulphur mg/kg 0.5Max, ASTM D-5623 Aromatics, UV Test Passes Test IMPCA 004-15
Appearance Visual Clear & Free of suspended Method Specific Gravity @ 20/20 Deg ASTM D-4052 Kg/L 0.7930 IBP ASTM D-1078 OC 64.2 DP 65.2 Purity GC % m 99.85 Total Chlorides UOP 779 Mg/kg
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