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

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 ...

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