Method for recovering methanol in coal-based synthetic gas-to-glycol process
A technology for the recovery of coal-based synthesis gas and methanol, which is applied in the preparation of hydroxyl compounds, chemical instruments and methods, and preparation of organic compounds, etc. The effect of reducing the consumption of methanol, reducing the amount of methanol circulation, and reducing the accumulation
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0042] [Example 1]
[0043] The crude methanol stream 1 containing methyl nitrite, methyl formate and dimethyl carbonate first enters the ester recovery tower T-101, the top of the tower recovers methyl nitrite 2, and the methyl nitrite returns to the coupling reactor (Labeled in the figure), the kettle liquid 3 of the ester recovery tower T-101 enters the light removal tower T-102, the top of the light removal tower T-102 removes methyl formate 5, and the kettle liquid of the light removal tower T-102 7 Containing a large amount of methanol and a small amount of dimethyl carbonate, the mixture of methanol and dimethyl carbonate enters the methanol and dimethyl carbonate separation unit X-101, separating methanol 9 for recycling, and dimethyl carbonate 8 as a product.
[0044] For 5000 kg / hour of crude methanol, the methyl nitrite content is 0.5 wt%, the methyl formate content is 0.5 wt%, the dimethyl carbonate content is 5 wt%, and the methanol content is 94 wt%.
[0045] The numbe...
Example Embodiment
[0052] [Example 2]
[0053] The implementation is the same as [Example 1]. just,
[0054] For 10,000 kg / hour crude methanol, the content of methyl nitrite is 8% by weight, the content of methyl formate is 20% by weight, the content of dimethyl carbonate is 20% by weight, and the content of methanol is 52% by weight.
[0055] The theoretical plate number of the ester recovery tower is 25, the top operating pressure is 0.7MPag, the top operating temperature is 30°C, and the bottom operating temperature is 118°C.
[0056] The theoretical plate number of the light removal tower is 45, the operating pressure at the top of the tower is 0.7MPag, the operating temperature at the top of the tower is 100°C, and the operating temperature of the tower bottom is 129°C.
[0057] Among them, the main logistics components are shown in Table 2.
[0058] Table 2
[0059] Logistics
[0060] Under normal operating conditions, the reboiler and condenser loads of each tower are as follows:
[0061] Load...
Example Embodiment
[0062] [Example 3]
[0063] The implementation is the same as [Example 1]. just,
[0064] For 10,000 kg / hour crude methanol, the content of methyl nitrite is 2% by weight, the content of methyl formate is 1% by weight, the content of dimethyl carbonate is 20% by weight, and the content of methanol is 77% by weight.
[0065] The theoretical plate number of the ester recovery tower is 15, the top operating pressure is 0.5MPag, the top operating temperature is 43°C, and the bottom operating temperature is 118°C.
[0066] The theoretical plate number of the light removal tower is 15, the top operating pressure is 0.3MPag, the top operating temperature is 75°C, and the bottom operating temperature is 105°C.
[0067] Among them, the main logistics components are shown in Table 3.
[0068] table 3
[0069] Logistics
[0070] Under normal operating conditions, the reboiler and condenser loads of each tower are as follows:
[0071] Load, MW
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2023 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap