Synthesis process for sulfurized isobutylene by vapor-phase process

A technology for sulfided isobutylene and synthesis process, applied in the direction of organic chemistry, etc., can solve the problems of complex production process, low production efficiency, difficult implementation of technological process, etc., to overcome many processes, improve work efficiency, and improve single-pass conversion rate and generation. the effect of yield

Inactive Publication Date: 2016-06-08
QINGDAO SHOUTAI AGRI SCI & TECH CO LTD
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  • Application Information

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Problems solved by technology

In the current synthesis process of vapour-phase sulfurized isobutene, the process flow is not easy to implement, the purity of the produced isobutene is low, the si

Method used

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Example Embodiment

[0010] Example

[0011] The synthesis process of gas-phase vulcanized isobutylene in this embodiment includes the following steps:

[0012] (1) Stir and mix elemental sulfur and catalyst at 460℃~550℃ and 3MPa~5MPa for 10min~20min to obtain a mixed gaseous stream;

[0013] (2) Pass in isobutylene gas and mix with the mixed gaseous stream obtained in step 1) to form a gaseous mixture into the reactor and react for 10-20min at 450℃~500℃ and 2MPa~9MPa conditions to obtain the reaction product;

[0014] (3) The reaction product obtained in step 2) is cooled and then subjected to gas-liquid separation, and the liquid phase is filtered to obtain a sulfurized isobutylene product.

[0015] The synthesis process of gas-phase vulcanized isobutylene does not require further processing, the procedure is simple, the data is accurate and easy to measure, and the process flow is easy to implement.

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Abstract

The invention discloses a synthesis process for sulfurized isobutylene by a vapor-phase process. The synthesis process comprises the steps: carrying out stirring and mixing on elemental sulfur and a catalyst for 10 to 20 minutes at the temperature of 460 DEG C to 550 DEG C and the pressure of 3MPa to 5MPa, so as to obtain mixed gas-phase material flow; introducing isobutene gas to the mixed gas-phase material flow, mixing the isobutene gas with the mixed gas-phase material flow, enabling the formed gas-phase mixture to enter a reactor, carrying out a reaction for 10 to 20 minutes at the temperature of 450 DEG C to 500 DEG C and the pressure of 2MPa to 9MPa, so as to obtain a reaction product; and cooling the reaction product, then, carrying out gas-liquid separation, and filtering a liquid phase, thereby obtaining the sulfurized isobutylene product. The synthesis process disclosed by the invention has the advantages of high reaction rate, high yield, simple process, low production cost, little pollution and the like. The invention provides a synthesizer for the sulfurized isobutylene by the vapor-phase process. The synthesizer is used for implementing the synthesis process for the sulfurized isobutylene by the vapor-phase process, disclosed by the invention, is beneficial to industrial production and is high in production capacity, thereby having relatively good economic benefits and a broad application prospect.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a synthesis process of vulcanized isobutylene by gas phase method. Background technique [0002] Isobutene, also known as 2-methylpropene, is mainly used for suffocation, weak anesthesia and weak stimulation. Mixing with air can form explosive mixtures. There is a danger of burning and explosion when encountering heat source and open flame. Vigorous polymerization may occur when heated. Reacts violently with oxidizing agents. The gas is heavier than air, and can spread to a considerable distance at a lower place, and will ignite and burn back when encountering an ignition source. In the current synthesis process of vapour-phase sulfurized isobutene, the process flow is not easy to implement, the purity of the produced isobutene is low, the single-pass conversion rate of reactants is low, the production process is complex and pollutes the environment, t...

Claims

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Application Information

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IPC IPC(8): C07D341/00
Inventor 张晶
Owner QINGDAO SHOUTAI AGRI SCI & TECH CO LTD
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