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

Method for treating sulfur-containing sewage, and bridge pipe

A sewage and bridge pipe technology, which is applied in natural water treatment, water treatment parameter control, chemical instruments and methods, etc., can solve the problems of large biochemical treatment load, high COD, and equipment corrosion treatment effect, so as to reduce COD and reduce equipment Effects of corrosion, ease of industrial application

Active Publication Date: 2020-12-11
国家能源集团煤焦化有限责任公司 +2
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a method and a bridge pipe for treating sulfur-containing sewage in order to overcome the existing problems of the prior art, such as the use of fresh water, the large load of biochemical treatment, the corrosion of equipment and the poor treatment effect. The final sulfur-containing sewage is flashed in contact with the high-temperature first gas, so that the sulfur element in the sulfur-containing sewage is discharged in the form of sulfur-containing gas, thereby reducing the COD in the sulfur-containing sewage from 200,000 mg / L to 2,000 mg / L L, successfully solved the problem of high COD in sulfur-containing sewage, ensured that the biochemical treatment of the coking plant is qualified, so that the biochemical system can operate normally, and the treatment cost is reduced, and the environment is friendly; the bridge pipe is equipped with atomizing nozzles, which can When the liquid is atomized and the bridge pipe is used for the treatment of sulfur-containing sewage, the sulfur in the sulfur-containing sewage can be removed to reduce the COD of the sulfur-containing sewage, thereby reducing equipment corrosion and easy industrial application

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
  • Method for treating sulfur-containing sewage, and bridge pipe
  • Method for treating sulfur-containing sewage, and bridge pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The sulfur-containing sewage is atomized in the bridge tube. After atomization, the particle size of the liquid is 0.03-0.06mm. The aperture of the atomizer opening in the bridge tube is 0.9mm. The aspect ratio of the bridge tube is 3. The desulfurized sulfur-containing sewage is contacted with raw coal gas for flash evaporation, and the obtained hydrogen sulfide enters the desulfurization section of the second coking plant for oxidation treatment to obtain sulfur. Among them, the weight flow of sulfur-containing sewage is 0.5t / h, the volume flow ratio of sulfur-containing sewage and raw coal gas is 1:200, the temperature of raw coal gas is 256°C, the pressure of flashing is 2.3MPa, and the temperature of flashing is 186°C, collect the flashed liquid.

Embodiment 2

[0045] The sulfur-containing sewage is atomized in the bridge tube, the particle size of the atomized liquid is 0.03-0.06mm, the opening diameter of the atomizer in the bridge tube is 1mm, and the aspect ratio of the bridge tube is 10, the atomized The final sulfur-containing sewage is contacted with raw coal gas for flash evaporation, and the obtained hydrogen sulfide enters the desulfurization section of the second coking plant for oxidation treatment to obtain sulfur. Among them, the weight flow of sulfur-containing sewage is 1t / h, the volume flow ratio of sulfur-containing sewage and raw coal gas is 1:500, the temperature of raw coal gas is 380°C, the pressure of flashing is 2.5MPa, and the temperature of flashing is 223 °C, collect the flash evaporated liquid.

Embodiment 3

[0047] The sulfur-containing sewage is atomized in the bridge tube. After atomization, the particle size of the liquid is 0.03-0.06mm. The aperture of the atomizer opening in the bridge tube is 0.95mm. The aspect ratio of the bridge tube is 5. The desulfurized sulfur-containing sewage is contacted with raw coal gas for flash evaporation, and the obtained hydrogen sulfide enters the desulfurization section of the second coking plant for oxidation treatment to obtain sulfur. Among them, the weight flow rate of sulfur-containing sewage is 0.8t / h, the volume flow ratio of sulfur-containing sewage and raw gas is 1:259, the temperature of raw gas is 320°C, the pressure of flashing is 2.4MPa, and the temperature of flashing is 215°C, collect the flash evaporated liquid.

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

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention relates to the field of sewage treatment, and discloses a method for treating sulfur-containing sewage, and a bridge pipe. The method comprises the following steps: (1) atomizing sulfur-containing sewage to obtain atomized sulfur-containing sewage; and (2) enabling the atomized sulfur-containing sewage to be in contact with a first gas for flash evaporation so as to separate sulfur-containing gas, wherein the temperature of the first gas is 256-380 DEG C. According to the method, COD in sulfur-containing sewage can be reduced from 200000 mg / L to 2000 mg / L, the problem of high CODin the sulfur-containing sewage is successfully solved, and the qualified biochemical treatment inflow of a coking plant is ensured, so that a biochemical system can normally operate, the treatment cost is reduced, and the method is environment-friendly.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a method for treating sulfur-containing sewage and a bridge pipe. Background technique [0002] In the process of hydrogenation of benzene, the nitrogen-containing compounds in crude benzene react with hydrogen to generate ammonia, and the sulfides in crude benzene react with hydrogen to produce H 2 S, ammonia reacts with hydrogen sulfide, carbon dioxide, and chloride ions in the system to produce ammonium bisulfide, ammonium bicarbonate, and ammonium chloride, which are deposited on the equipment pipeline. Over time, the equipment pipeline will be blocked and affect the normal production. In order to prevent The pipeline of benzene hydrogenation equipment is clogged, and desalinated water needs to be added to the system to clean the ammonium salt deposited in the equipment pipeline, and the sewage with dissolved ammonia salt is discharged from the bottom of the high-pressure sepa...

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 Applications(China)
IPC IPC(8): C02F1/06C02F101/10C02F101/30C02F103/36
CPCC02F1/06C02F2101/101C02F2209/08C02F2101/30C02F2103/36
Inventor 张志宏王永军
Owner 国家能源集团煤焦化有限责任公司