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A slurry bed loop reactor and its application and a method for producing hydrogen peroxide

A loop reactor, hydrogen peroxide technology, applied in chemical instruments and methods, peroxide/peroxyhydrate/peroxyacid/superoxide/ozonide, inorganic chemistry, etc., can solve the temperature problem in the bed Uneven distribution, low catalyst utilization efficiency, large catalyst liquid holding capacity, etc., to avoid flow dead zones and hot spots, uniform catalyst and gas distribution, and reduce operating burden

Active Publication Date: 2017-09-22
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the most commonly used in the anthraquinone hydrogenation process in China is the downflow fixed bed reactor, that is, the trickle bed reactor, but the fixed bed reactor has low catalyst utilization efficiency, low reaction selectivity, uneven temperature distribution in the bed, The problem of large local liquid holding capacity of the catalyst and serious degradation of the working fluid

Method used

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  • A slurry bed loop reactor and its application and a method for producing hydrogen peroxide
  • A slurry bed loop reactor and its application and a method for producing hydrogen peroxide
  • A slurry bed loop reactor and its application and a method for producing hydrogen peroxide

Examples

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specific Embodiment approach

[0023] A slurry bed loop reactor provided by the present invention comprises a riser, an enlarged section with an enlarged upper diameter of the riser, and a solid-liquid separator, the enlarged section communicates with the upper part of the solid-liquid separator, and the solid-liquid separation The bottom of the riser communicates with the bottom of the riser; a three-phase separator with double sleeve structure is set in the expansion section, a raw material inlet is provided at the bottom of the riser, and a gas outlet is provided at the top of the expansion section. A filter assembly is arranged in the solid-liquid separator, and the upper part of the solid-liquid separator is provided with a clear liquid outlet through the filter assembly.

[0024] Preferably, the three-phase separator is a double-sleeve structure, wherein the diameter ratio of the outer cylinder to the riser is 1.2 to 5:1, more preferably 2 to 4:1; the diameter ratio of the inner cylinder to the riser i...

Embodiment 1

[0064] Example 1 illustrates the effect of the slurry bed reactor provided by the present invention applied to the preparation of hydrogen peroxide by anthraquinone method.

[0065] Attached figure 1 In the slurry bed reactor shown, the size of the reaction riser is Φ150×5000mm, the size of the expansion section is Φ450×1500mm, the size of the inner cylinder is Φ120×2000mm, the length of the inner cylinder extending into the lower part of the riser is 1000mm, and the outer cylinder is composed of Composed of two sections, the size of the upper section is Φ400×500mm, and the size of the lower section is Φ300×500mm. The top of the inner cylinder is connected with the hydraulic centrifuge. A fluid outlet pipeline is arranged at the gap between the outer sleeve and the reactor to connect the solid-liquid separator. The size of the solid-liquid separator is Φ150×1500mm, and there are two sets of ceramic membrane filter components with a height of 500mm installed inside. It is set...

Embodiment 2

[0069] Example 2 illustrates the effect of the slurry bed reactor provided by the present invention applied to the preparation of hydrogen peroxide by anthraquinone method.

[0070] Attached figure 2 In the slurry bed reactor shown, the size of the reaction riser is Φ150×5000mm, the size of the expansion section is Φ450×2000mm, the size of the inner cylinder is Φ150×1000mm, the inner cylinder is connected to the bottom of the riser, and has 8 apertures It is a 10mm round hole, and the size of the outer cylinder is Φ400×1500mm. A fluid outlet pipeline is arranged at the gap between the outer sleeve and the reactor to connect the solid-liquid separator. The top of the inner cylinder is connected with the hydraulic centrifuge. The size of the solid-liquid separator is Φ150×1500mm, and there are two sets of ceramic membrane filter components with a height of 500mm installed inside. It is set to automatically recoil when the pressure difference of each filter reaches 0.06MPa, an...

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Abstract

The invention discloses a slurry-bed circulation flow reactor and an application and a method for producing hydrogen peroxide. The slurry-bed circulation flow reactor comprises an ascension pipe, an expanding section used for expanding pipe diameter of the upper part of the ascension pipe and a solid-liquid separator, wherein the expanding section is communicated with the upper part of the solid-liquid separator; the bottom of the solid-liquid separator is communicated with the bottom of the ascension pipe; a three-phase separator of a double sleeve structure is arranged in the expanding section; a raw material inlet is formed in the bottom of the ascension pipe; a gas outlet is formed in the top of the expanding section; a filtration component is arranged in the solid-liquid separator; and a clear liquid outlet is arranged at the upper part of the solid-liquid separator by virtue of the filtration component. According to a method for producing hydrogen peroxide by taking the slurry-bed circulation flow reactor as a hydrogenation reactor, the gas-liquid-solid three-phase separation efficiency is high; the local excessive hydrogenation of the catalyst is avoided; the excessive hydrogenation possibility is reduced; the hydrogenation efficiency is high; and hydrogen peroxide products with high concentration can be produced.

Description

technical field [0001] The present invention relates to a slurry bed loop reactor and its application method, more specifically, to a slurry bed reactor suitable for the hydrogenation process in the process of producing hydrogen peroxide by anthraquinone method and a method for producing hydrogen peroxide Methods. Background technique [0002] Hydrogen peroxide is an important inorganic chemical raw material, which is widely used in papermaking, textile, chemical synthesis, military industry, electronics, food processing, medicine, cosmetics, environmental protection, metallurgy and many other fields. Hydrogen peroxide decomposes to produce water and oxygen, which has no secondary pollution to the environment and is a green chemical. At present, the anthraquinone method is widely used in the production of hydrogen peroxide at home and abroad. The anthraquinone method to produce hydrogen peroxide uses anthraquinone derivatives as the working carrier. Under the action of a c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J8/22C01B15/023
CPCB01J8/224B01J2208/00548C01B15/023
Inventor 朱振兴侯栓弟郑博唐晓津胡立峰吕庐峰李学锋
Owner CHINA PETROLEUM & CHEM CORP
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