Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Desulfurizing agent and preparation method thereof

A desulfurizing agent and group technology, applied in the field of desulfurizing agent and its preparation, can solve the problems of unprotected production equipment, poor selectivity, lack of anti-corrosion ability, etc., and achieve the effects of avoiding corrosion, reducing alkalinity and improving selectivity

Inactive Publication Date: 2020-10-09
PETROCHINA CO LTD
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Due to the strong alkalinity of methyldiethanolamine and piperazine, or methyldiethanolamine and diethylenepropanolamine and other alcoholamine desulfurizers, carbon dioxide is also removed during desulfurization, the selectivity is poor, and there is no anti-corrosion ability , does not protect production equipment

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
  • Desulfurizing agent and preparation method thereof
  • Desulfurizing agent and preparation method thereof
  • Desulfurizing agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0076] On the one hand, the embodiment of the present invention also provides a method for preparing a desulfurizer, the method comprising: adding a sterically hindered amine into water according to the mass percentage of each component, heating to a reference temperature, and stirring at a reference speed for a reference time to obtain Desulfurizer.

[0077] Optionally, the reference temperature is 20-25°C.

[0078] By preparing the desulfurizing agent at a temperature of 20-25°C, it is possible to avoid side reactions due to too high temperature, or uneven mixing of the desulfurizing agent due to too low temperature. Exemplary temperatures for preparation may be 20°C, 21°C, 22°C, 23°C, 24°C, 25°C, and the like.

[0079] Optionally, the reference time is 10-30 minutes.

[0080] By setting the stirring time, the steric hindered amine can be mixed uniformly to obtain a desulfurizer with uniform composition. Exemplary stirring times may be 10 minutes, 11 minutes, 12 minutes, ...

Embodiment 1

[0086] Add 30% C to the water 11 h 25 ON 2 、C 12 h 27 ON 2 with C 16 h 36 ON 2 , stirred at a speed of 30 r / min for 10 minutes at a temperature of 20° C. to obtain the desulfurizing agent provided in the examples of the present invention.

Embodiment 2

[0088] Add 38% C to the water 16 h 36 ON 2 、C 17 h 38 ON 2 with C 11 h 26 ON 2 , at a temperature of 21° C., stirring at a speed of 31 r / min for 16 minutes, to obtain the desulfurizing agent provided by the embodiment of the present invention.

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 invention discloses a desulfurizing agent and a preparation method thereof, and belongs to the technical field of gas purification. The desulfurizing agent comprises, 30-60% by mass of stericallyhindered amine, with the balance being water, wherein the sterically hindered amine is at least one of tertiary amine with a plurality of steric hindrance groups and secondary amine with a plurality of steric hindrance groups; the tertiary amine with a plurality of steric hindrance groups comprises at least one of di-sec-pentyl tertiary amine and di-isohexyl tertiary amine; the secondary amine having the plurality of steric hindrance groups includes at least one of a di-sec-pentyl secondary amine and a di-isohexyl secondary amine. The reaction rate of carbon dioxide and the desulfurizing agent is reduced, and the selectivity of the desulfurizing agent and the sulfide removal efficiency of the desulfurizing agent are improved. Due to the existence of multiple steric hindrance groups, the alkalinity of the desulfurizing agent is reduced, and corrosion of the desulfurizing agent to equipment is avoided.

Description

technical field [0001] The invention relates to the technical field of gas purification, in particular to a desulfurizer and a preparation method thereof. Background technique [0002] Both refinery gas and natural gas contain a large amount of sulfide. When refinery gas and natural gas are used for industrial production, the sulfide in refinery gas and natural gas will not only cause corrosion of equipment and pipelines, but also cause chemical reactions to make catalysts Poisoning and inactivation will ultimately affect the yield and quality of the product. When refinery gas and natural gas are used as civil fuels, the sulfur compounds in the waste gas will pollute the environment and endanger human health. Therefore, no matter whether refinery gas and natural gas are used for industrial production or civil fuel, sulfur compounds must be removed to meet the required technical indicators of emissions. [0003] The desulfurizers used in the related art are mainly methyldie...

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
IPC IPC(8): B01D53/78B01D53/48C10L3/10
CPCB01D53/48B01D53/78B01D2251/80C10L3/103
Inventor 杨超越易铧常宏岗熊钢王军何金龙杨威
Owner PETROCHINA CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com