Unlock instant, AI-driven research and patent intelligence for your innovation.

Treatment method of oxidation tail gas in the process of producing hydrogen peroxide

A treatment method, a technology for oxidizing tail gas, applied in gas treatment, chemical instruments and methods, separation methods, etc., can solve the problems of complex treatment process, high cost, and substandard tail gas purification effect, achieve good purification effect and improve stability , Improve the effect of specific surface

Active Publication Date: 2021-06-04
CHINA PETROLEUM & CHEM CORP +1
View PDF13 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In order to solve the problems of complex treatment process, high cost and substandard tail gas purification effect in the tail gas purification treatment method in the production process of hydrogen peroxide in the prior art, the present invention intends to provide a tail gas purification treatment method, which uses specific means to carry out adsorption resin Treatment to improve the physical structure of the resin, the treated adsorption resin can adsorb, separate and purify the tail gas, fully recover the aromatics in the tail gas, and make the exhaust gas meet the standard

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Treatment method of oxidation tail gas in the process of producing hydrogen peroxide
  • Treatment method of oxidation tail gas in the process of producing hydrogen peroxide
  • Treatment method of oxidation tail gas in the process of producing hydrogen peroxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Pre-deoxygenate isopropanol, sec-butanol and deionized water to prepare a low-carbon alcohol mixed solution with a volume fraction of isopropanol and sec-butanol of 5%, and place the DA201-B adsorption resin on the above-mentioned low-carbon alcohol Mix the solution in an airtight enamel container. The volume ratio of low-carbon alcohol mixed solution to DA201-B type adsorption resin is 5:1, and it is treated at 100°C for 8 hours under autogenous pressure.

Embodiment 2

[0038] Except that isopropanol and sec-butanol were replaced by ethanol and n-butanol, other conditions were the same as in Example 1, and the adsorption resin was modified.

Embodiment 3

[0040] Except that ethanol and isopropanol were used instead of isopropanol and sec-butanol, other conditions were the same as in Example 1, and the adsorption resin was modified.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The treatment method of oxidation tail gas in the process of producing hydrogen peroxide is to condense the tail gas to 5 ℃ ~ 45 ℃, pass it into the adsorption resin column, use the adsorption resin to absorb aromatic hydrocarbons, and purify the hydrogen peroxide oxidation tail gas; the adsorption resin is modified before use Treatment: Soak in the aqueous solution of low-carbon alcohol, place it in a closed container, and treat it under autogenous pressure at 100°C-250°C for 8h-24h. In the present invention, the adsorption resin is modified, and the low-carbon alcohol aqueous solution is used for soaking treatment, which not only improves the specific surface, pore volume and pore diameter of the adsorption resin, but also improves the stability of the adsorption resin; it is used as an adsorbent for hydrogen peroxide The oxidation tail gas purification process has the advantages of good purification effect, high strength and low operating cost.

Description

technical field [0001] The invention relates to a method for treating tail gas in the hydrogen peroxide production process, in particular to a method for separating and recovering aromatics in the tail gas. Background technique [0002] The tail gas produced by anthraquinone method for hydrogen peroxide comes from the oxidation tower. After the tail gas is condensed (10°C-20°C), the content of aromatics in the tail gas reaches 20g / m 3 -30g / m 3 . Aromatic hydrocarbons are highly volatile and easy to lose with the gas phase, and aromatic hydrocarbons are benzene substances. If they are not recovered in time, they will seriously pollute the environment. The general treatment method is to condense most of the aromatic hydrocarbons in the tail gas through a heat exchanger, then use the pressure of the oxidized tail gas as power, and cool it through an expansion unit at a low temperature to further condense and recover the heavy aromatics in the tail gas, and then absorb them th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/00B01D53/02
CPCB01D53/002B01D53/02B01D2253/25B01D2257/7027B01D2258/02
Inventor 霍稳周吕清林刘野李花伊
Owner CHINA PETROLEUM & CHEM CORP