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Reaction system and method for preparing ethylene by means of slurry bed reactor

A slurry bed and reactor technology, which is applied in the field of reaction systems for preparing ethylene by using slurry bed reactors, can solve the problems of difficult internal heat and low utilization rate of catalysts, and achieves easy heat transfer, simple and easy reaction system and method. effect of operation

Active Publication Date: 2016-08-24
SHENWU TECH GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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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 using a slurry bed reactor, so as to solve the problems that the internal heat is not easily transmitted and the catalyst utilization rate is low when preparing ethylene in the prior art

Method used

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  • Reaction system and method for preparing ethylene by means of slurry bed reactor
  • Reaction system and method for preparing ethylene by means of slurry bed reactor
  • Reaction system and method for preparing ethylene by means of slurry bed reactor

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Embodiment 1

[0055] 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.

[0056] 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.

[0057] 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 and method for preparing ethylene by means of a slurry bed reactor. The system comprises the slurry bed reactor, a condenser, a condensate separator, a condensate liquid storage tank, a solvent pump, a tower bottom solvent storage tank, filtration equipment, a green oil removal system, a high-temperature heating device and a catalyst reduction device; the slurry bed reactor comprises a shell, a heater and a sieve plate; the lower portion of the shell is provided with a reaction gas inlet, a liquid solvent inlet and a liquid outlet; the upper portion of the shell is provide with a gas outlet and a liquid inlet; the heater is arranged on the lower portion inside the shell; the sieve plate is located inside the shell and fixed on the inner wall of the shell. The invention further provides a method for preparing ethylene by means of the system. The method comprises the steps that mixed gas of acetylene and hydrogen is fed into the slurry bed reactor for a reaction; the reacted gas is subjected to condensation separation, and ethylene is obtained; a catalyst obtained through filtration can be recycled. By means of the reaction system and method for preparing ethylene by means of the slurry bed reactor, the problems that for ethylene prepared in the prior art, internal heat is not prone to come out, and the utilization rate of the catalyst is low can be effectively solved.

Description

technical field [0001] The invention generally relates to the field of ethylene preparation, and in particular to a reaction system and method for preparing ethylene using a slurry bed reactor. 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 mature process ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J8/18C07C5/09C07C11/04
CPCB01J8/18C07C5/09C07C11/04
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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