Reaction system for preparing ethylene by inputting gas at different heights and method

A gas and ethylene technology, applied in the field of reaction systems for preparing ethylene, can solve the problems of low utilization rate of catalysts, difficult internal heat, etc., and achieve the effects of simple and easy operation and easy heat transfer of the reaction system and method.

Inactive Publication Date: 2016-08-31
SHENWU TECH GRP CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0010] The purpose of the present invention is to provide a reaction system and method for preparing ethylene with different heights of input gas, so as to solve the problems in the prior art that the internal heat is not easily transmitted and the utilization rate of the catalyst is low in the preparation of ethylene

Method used

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  • Reaction system for preparing ethylene by inputting gas at different heights and method
  • Reaction system for preparing ethylene by inputting gas at different heights and method
  • Reaction system for preparing ethylene by inputting gas at different heights and method

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preparation example Construction

[0038] Such as image 3 Shown is a reaction system for preparing ethylene with input gas at different heights, which includes the slurry bed reactor 10, condenser 30, condensation separator 40, condensate storage tank 50, solvent pump 60, tower bottom Solvent storage tank 70 , filter equipment 80 , green oil removal system 90 , high temperature heating device 100 and catalyst reduction device 110 . The green oil removal system 90 communicates with the slurry bed reactor 10 through the liquid solvent inlet, the bottom solvent storage tank 70 communicates with the slurry bed reactor 10 through the liquid outlet, and the condensing The device 30 communicates with the slurry bed reactor 10 through the gas outlet, and the solvent pump 60 communicates with the slurry bed reactor 10 through the liquid inlet; the condenser 30, the condensation separator 40. The condensate storage tank 50 and the solvent pump 60 are connected in sequence; The liquid storage tanks 50 are connected in ...

Embodiment 1

[0056] Adopt the system for the selective hydrogenation of acetylene to produce ethylene in the embodiment such as image 3 shown. The system structure is in the form introduced in the above-mentioned embodiment. The operating pressure of the system is 0.25MPa and the temperature is 130°C.

[0057] Nitrogen can be used as the gas source first to establish a gas-liquid flow with the catalyst-containing solvent in the slurry-bed reactor 10; then, gradually turn on the heater at the bottom to establish an updraft of steam. When the steam rises to the top of the reactor to cool and reflux, and the temperature is stable, nitrogen can be gradually converted into a mixture of hydrogen and acetylene and fed into the reactor.

[0058] In the reactor, acetylene and hydrogen are catalyzed by the catalyst to generate ethylene; the reacted gas passes through the condenser 30 and the condensation separator 40 to condense the solvent in the gas, and then sends it out of the reaction system...

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Abstract

The invention relates to a reaction system for preparing ethylene by inputting gas at different heights and a method. The system comprises a slurry state bed reactor, a condenser, a condensation separator, a condensate storage tank, a solvent pump, a tower bottom solvent storage tank, a filtering device, a green oil removing system, a high-temperature heating device and a catalyst reduction device. The slurry state bed reactor comprises a shell, a heater and a screen plate. The lower portion of the side face of the shell and the middle portion of the side face of the shell are provided with reaction gas inlets, and the lower portion of the shell is provided with a liquid solvent inlet and a liquid outlet. The upper portion of the shell is provided with a gas outlet and a liquid inlet. The invention further provides the method for preparing ethylene through the system. The method includes the steps of sending mixed gas of acetylene and hydrogen into the slurry state bed reactor for reaction, conducting condensation separation on reaction gas to obtain ethylene, and conducting filtering to obtain a catalyst which can be recycled. The problems that in the prior art, when ethylene is prepared, inner heat is not transmitted out easily, and the catalyst is low in utilization rate are solved.

Description

technical field [0001] The present invention generally relates to the field of ethylene preparation, in particular to a reaction system and method for preparing ethylene with different heights of input gas. Background technique [0002] Ethylene is an important basic raw material in modern industry and one of the world's largest output chemicals. Its products are widely used in national economy, people's life, national defense and other fields. It is the "mother of organic synthesis". Facing the shortage of oil resources and rising international oil prices, the source of raw materials has become a bottleneck in the development of the ethylene industry, and it is also a problem that must be solved before people. Therefore, research and development of a new process technology to prepare ethylene, so that it can replace petroleum as an industrial raw material, can alleviate the dependence of modern industry on petroleum. [0003] In coal chemical technology, it has become a ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C5/09C07C11/04C07C7/00B01J8/18
CPCY02P20/584C07C5/09B01J8/18C07C7/005C07C11/04
Inventor 苏二强史雪君余海鹏刘周恩吴黎阳吴道洪
Owner SHENWU TECH GRP CO LTD
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