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

Clean production process and device for sulfur recycling and alkylated waste acid combined treatment

A technology of combined treatment of alkylation waste acid, applied in the direction of sulfur compounds, inorganic chemistry, sulfur preparation/purification, etc., can solve the problems of low conversion rate, emission can not meet the national requirements, etc., to reduce emissions and improve atomization effect, the effect of high desulfurization efficiency

Pending Publication Date: 2017-11-03
HULUDAO DESIGN INST PETROCHINA NORTHEAST REFINING & CHEM ENG +1
View PDF0 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Low conversion rate leads to emission not meeting national requirements

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
  • Clean production process and device for sulfur recycling and alkylated waste acid combined treatment

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment

[0039] An oil refinery affiliated to a petrochemical group, Claus sulfur flue gas 7700Nm 3 / h,SO 2 Content 670mg / Nm 3 , H 2 The O content is 9.4%, and the temperature is 750°C. Firstly, 0.5MPa saturated steam is produced as a by-product of heat recovery by waste heat boiler, and the flue gas temperature is as low as 180°C; then, after washing and dust removal in the scrubber, the temperature is reduced to below 35°C, and the plate heat exchanger and cooling tower are used to indirect heat exchange and reduce circulation The temperature of the washing liquid; then the sulfur-containing flue gas passes through the electric demister to remove impurities such as water droplets and mist, and then enters the desulfurization tower, where it is sprayed and absorbed by hydrogen peroxide solution, and the SO in the tail gas 2 Reduced to 20mg / Nm 3 Next, empty the drain. As the desulfurization cycle absorbs, the concentration of dilute acid in the circulating fluid increases graduall...

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 clean production process and device for sulfur recycling and alkylated waste acid combined treatment. The process comprises Claus-process waste gas combustion, hydrogen peroxide desulfurization acid making, waste acid cracking pretreatment, waste acid atomization cracking and the like. By the process, deep desulfurization of sulfur-containing tail gas can be realized, waste acid is supplemented and the viscosity and properties of the waste acid are adjusted by dilute sulphuric acid as a side product of desulfurization, the waste acid recycling rate is increased, and full recycling of resources is realized.

Description

technical field [0001] The invention belongs to the field of desulfurization acid production and waste acid circulation in oil refining, coking and petrochemical industries, and specifically relates to a clean production process and a corresponding device for combined treatment of Claus process sulfur recovery and alkylation waste acid. Background technique [0002] Oil refining, coking and petrochemical industries adopt Claus method to deal with H in flue gas 2 S gas to obtain sulfur as a by-product. The general flow of the Claus process is as follows: part of the H 2 S to SO 2 , this part SO 2 with unreacted H 2 S enters the catalytic reactor to generate sulfur. unreacted trace H 2 S, SO 2 、CS 2 And CoS enters the tail gas treatment unit and is converted into H by hydrohydrolysis 2 S, which is absorbed by amine method and then incinerated to reduce the impact on the environment. H absorbed by amine method 2 After analysis, S circulates into the combustion furnac...

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): C01B17/76C01B17/04B01D53/14B01D47/06
CPCB01D47/06B01D53/1418B01D53/1481B01D53/1493C01B17/0404C01B17/775B01D2251/106Y02P20/129
Inventor 陶德宏刘丽新花序李昕益吕潇
Owner HULUDAO DESIGN INST PETROCHINA NORTHEAST REFINING & CHEM ENG