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Production system and production method for continuously producing ethanol by ethyl acetate through using hydrogenation

A production system, ethyl acetate technology, applied in chemical instruments and methods, climate sustainability, sustainable manufacturing/processing, etc., can solve the problems of lack of production equipment and production systems, restrictions on industrial scale, and high energy consumption of ethanol, To achieve the effect of reducing energy consumption, reducing usage, and easy operation

Active Publication Date: 2012-11-07
TANGSHAN ZHONGRONG TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the lack of reasonable and efficient production equipment and production systems, the hydrogenation of ethyl acetate to produce ethanol requires high energy consumption and high production costs, which restricts its industrial scale development.

Method used

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  • Production system and production method for continuously producing ethanol by ethyl acetate through using hydrogenation
  • Production system and production method for continuously producing ethanol by ethyl acetate through using hydrogenation
  • Production system and production method for continuously producing ethanol by ethyl acetate through using hydrogenation

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Experimental program
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Effect test

Embodiment 1

[0045] like figure 1 As shown, the production system provided by the present invention includes a vaporizer, a heat exchanger, a reactor, a condenser and a separator.

[0046] Among them, the inlet of the vaporizer tube is the inlet of the raw material, the outlet of the vaporizer tube is connected with the inlet of the heat exchanger tube, the outlet of the heat exchanger tube is connected with the inlet of the reactor, and the outlet of the reactor is connected with the heat exchanger shell The inlet of the shell side of the heat exchanger is connected, the outlet of the shell side of the heat exchanger is connected with the inlet of the shell side of the evaporator, and the outlet of the shell side of the evaporator is connected with the condenser and the separator in turn.

[0047] The production system may also include a circulation compressor and a flash tank, which are respectively connected with the separator.

[0048] The circulating compressor is connected with the ...

Embodiment 2

[0058] Embodiment 2 produces the production process of 200,000 tons of ethanol per year

[0059] With a supply flow rate of 26 tons / hour, the liquid ethyl acetate raw material enters the preheating tube bundle 16 of the vaporizer from the liquid raw material inlet 13 of the vaporizer through the sub-tube box 12, flows upward in the preheating tube bundle 16, and is covered by the shell during the flow process. The hot reaction gas in the process is preheated to near the saturation temperature, and then uniformly flows into the evaporating tube bundle 15 through the liquid distributor arranged above the upper tube sheet 3, and forms a film in the evaporating tube bundle 15 and flows downward by gravity.

[0060] Cool raw hydrogen at 266000Nm 3 The supply flow rate of / h enters the evaporator tube bundle 15 of the evaporator from the cold raw material gas inlet 8 at the bottom of the vaporizer through the lower tube box, flows upward in the evaporator tube bundle 15, and contact...

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Abstract

The invention relates to a production system for continuously producing ethanol by ethyl acetate through using hydrogenation. The production system adopts a manner of combining a gasifying device and a heat exchanger and can utilize heat of thermal reaction gas generated by reaction to the greatest extent. The invention further relates to a method for continuously producing the ethanol by utilizing the production system. The production system disclosed by the invention can sufficiently utilize heat energy contained in the thermal reaction gas; and meanwhile, the use amount of condensed water is further reduced and the requirements of a novel chemical industry which is green and energy-saving can be met. The production method disclosed by the invention recycles the heat of the thermal reaction gas to the greatest extent, reduces the energy consumption, has moderate production conditions and convenience for operation, and is very suitable for large-scale industrialized application.

Description

technical field [0001] The invention relates to the production field of chemical products, in particular to a production system and production method for continuously producing ethanol through catalytic hydrogenation using ethyl acetate as a raw material. Background technique [0002] Ethanol is an important chemical raw material and a potential liquid fuel resource, and it is one of the most promising alternative fuels for gasoline in the future. However, traditional ethanol production is mainly based on grain fermentation technology, and its production cost and development are greatly restricted. [0003] At present, a large number of research reports and patented technologies have been published at home and abroad on the technology of ethyl acetate hydrogenation to produce ethanol, but there is no industrialized device put into production. Due to the lack of reasonable and efficient production equipment and production systems, the hydrogenation of ethyl acetate to produc...

Claims

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Application Information

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IPC IPC(8): C07C31/08C07C29/149
CPCY02P20/10
Inventor 王天双代淑梅
Owner TANGSHAN ZHONGRONG TECH CO LTD
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