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Reactor with functions of reaction product separation and disturbance increase

A technology of reaction products and disturbance functions, applied in chemical instruments and methods, chemical/physical processes, carbon dioxide or inorganic carbonate preparation, etc., can solve the problem of uneven concentration distribution of reactors, low conversion rate of target products, and flexible processing capacity Small problems, to achieve the effect of enhancing operational flexibility, increasing cycle disturbance, and improving conversion rate

Active Publication Date: 2014-06-25
DALIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the conversion rate of the target product is low due to the accumulation of non-target products, the concentration distribution in the reactor is uneven, and the processing capacity is small.

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  • Reactor with functions of reaction product separation and disturbance increase
  • Reactor with functions of reaction product separation and disturbance increase
  • Reactor with functions of reaction product separation and disturbance increase

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Embodiment Construction

[0029] Taking the direct catalytic conversion of carbon dioxide and methanol to dimethyl carbonate as an example, the non-target product to be removed in this reaction is water. Since the partial pressure of water in this system is very low, it is not suitable to adopt the method of condensation, so the method of adsorption is used to remove water , The efficient and highly selective adsorbent used in this example is 3A molecular sieve.

[0030] When the raw material is reacting, the bypass valve 20, the desorbent inlet valve 23, and the desorbent outlet valve 22 are closed. In this reaction, the porous support cylinder body 8 and the porous support upper cover 9 all select barbed wire for use. After reacting in the gas-phase reactor, the reactants are discharged from the gas-phase material outlet 4, diverted through the three-way, and part of them enter the reflux material inlet 16, and the reflux flow rate is controlled by the regulating valve 18. The reflux material passes...

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Abstract

The present invention belongs to the technical field of chemical industry reactors, and relates to a reactor with functions of reaction product separation and disturbance increase. The reactor is characterized by comprising an adjustable catalyst bed layer supporting body, wherein disturbance is increased and reaction products are selectively removed. The adjustable catalyst bed layer supporting body comprises a porous supporting body and a plurality of supporting screws, wherein a position of the porous supporting body on the screw is adopted to adjust a height and a position of the bed layer. A reaction product removing process is provided with air pump cycle. An outlet end of a reaction product removing device is provided with a heat exchanger, wherein the reaction products are removed by the reaction product removing device in a condensation manner or an absorption manner. With application of direct catalytic conversion of dimethyl carbonate through carbon dioxide and methanol as an example, the reaction product removing device is a water removing device, an absorption manner is selected, and an absorption agent selects a high efficiency and high selectivity water removing molecular sieve such as a 3A molecular sieve. The reactor has advantages of reactant conversion rate improvement, reactant mass transfer acceleration, reactor treatment amount flexibility improvement, and the like.

Description

technical field [0001] The invention belongs to the technical field of chemical equipment, and relates to a reactor, in particular to a reactor for synthesizing dimethyl carbonate with carbon dioxide and methanol. Background technique [0002] Dimethyl carbonate is a green chemical raw material that has been widely studied in recent years (Fang Yunjin, Xiao Wende. Raw material for green technology --- dimethyl carbonate. Chemical Bulletin. 2000. (9). 19-25), it has low toxicity, Excellent environmental performance, wide range of uses and so on. With a variety of reaction properties, it can replace toxic industrial raw materials such as phosgene and freon, and has the characteristics of safety, no pollution, and convenient transportation. [0003] Due to a large number of studies on the direct catalytic conversion of carbon dioxide and methanol to dimethyl carbonate in recent years, coupled with the vigorous development of molecular sieves and metal-organic frameworks, this ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J8/00C07C69/96C07C68/04
Inventor 李继翔鲁金明王菲菲王金渠杨建华张艳
Owner DALIAN UNIV OF TECH
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