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

A nitrogen oxide tail gas treatment system and its treatment method

A technology for tail gas treatment and nitrogen oxides, applied in gas treatment, chemical instruments and methods, separation methods, etc., can solve the problems of poor purification effect, low technical level, low purification efficiency, etc., and achieve good purification effect and absorption. Simple process and high purification efficiency

Active Publication Date: 2018-12-28
YIXING YUXING IND & TRADE
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the lye absorption method can recover nitrogen oxides into nitrite or nitrate products, it has certain economic benefits, and the process and equipment are relatively simple, and the technical route is mature. It is widely used in the treatment of nitrogen oxides in industrial waste gas. , but the main disadvantage of this method is that the technical level is not high, the purification efficiency is low, and the purification effect is not good

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
  • A nitrogen oxide tail gas treatment system and its treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1: A tail gas treatment system containing nitrogen oxides, including 4 oxidation reaction tanks 1, No. 1 tail gas absorption tower 2, No. 2 tail gas absorption tower 3, No. 3 tail gas absorption tower 4 and heat exchange tower 5 arranged in parallel , the top of each oxidation reaction tank 1 is provided with an exhaust gas inlet pipe 6 connected to the exhaust gas inlet at the bottom of No. 1 exhaust absorption tower 2, and No. 1 exhaust gas absorption tower 2, No. Water inlet pipe 7, the top gas outlet of No. 1 tail gas absorption tower 2 is connected to the air inlet near the bottom of No. 2 tail gas absorption tower 3 through pipes, and the top gas outlet of No. 2 tail gas absorption tower 3 is connected to the bottom of No. 3 tail gas absorption tower 4 through pipes The air inlet at the end, the gas outlet at the top of No. 3 tail gas absorption tower 4 is connected to the discharge pipe 8, and the bottom of No. 2 tail gas absorption tower 3 and No. The...

Embodiment 2

[0015] Example 2: A treatment method for a nitrogen oxide-containing tail gas treatment system. The 80°C nitrogen oxide-containing tail gas discharged from the top of the oxidation reaction barrel enters the No. 1 tail gas absorption tower, No. 2 tail gas absorption tower, and No. 3 tail gas absorption tower is discharged after heat exchange and absorption, and the water outlet at the bottom of No. 1 tail gas absorption tower circulates and sprays No. 1 tail gas absorption tower and heat exchange tower through No. 1 spray pipe and No. 2 spray pipe. The water outlet at the bottom of the exchange tower circulates and sprays the No. 1 tail gas absorption tower through the No. 2 spray pipe, and the gas outlet at the top of the heat exchange tower enters the oxidation reaction barrel through the exhaust pipe for secondary temperature rise, and adjusts the pressure to 0.15 through the compression fan. MPa, the temperature of the air and steam mixture entering the air inlet pipe and s...

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 relates to a treating system for exhaust gas containing nitric oxide and a treating method thereof. A No.1 exhaust gas absorbing tower, a No.2 exhaust gas absorbing tower and a No.3 exhaust gas absorbing tower are all provided with water inlet pipelines; a top gas outlet of the No.1 exhaust gas absorbing tower is connected with a bottom-near gas inlet of the No.2 exhaust gas absorbing tower through a pipeline; the top gas outlet of the No.2 exhaust gas absorbing tower is connected with the bottom-near gas inlet of the No.3 exhaust gas absorbing tower through a pipeline; the top gas outlet of the No.3 exhaust gas absorbing tower is connected with a discharging pipeline; a circulating spraying pipeline is arranged at the bottom ends of the No.2 exhaust gas absorbing tower and the No.3 exhaust gas absorbing tower; the circulating spraying pipeline is connected with the spraying openings at the top ends of the No.2 exhaust gas absorbing tower and the No.3 exhaust gas absorbing tower; a circulating pump is arranged on the circulating spraying pipeline; a No.1 spraying pipeline is arranged at a water outlet at the bottom end of the No.1 exhaust gas absorbing tower and is connected with the spraying opening at the top end of a heat exchange tower; a No.2 spraying pipeline is arranged on the No.1 spraying pipeline and is connected with the spraying opening at the top end of the No.1 exhaust gas absorbing tower; the water outlet at the bottom of the heat exchange tower is communicated with the No.2 spraying pipeline.

Description

technical field [0001] The invention relates to a process for absorbing nitrogen oxides. Background technique [0002] Nitrogen oxides are compounds composed only of nitrogen and oxygen, including a variety of compounds, such as nitric oxide, nitrogen dioxide, laughing gas, nitrogen pentoxide, etc. They are common air pollutants, the main Nitric oxide and nitrogen dioxide. [0003] The treatment methods of nitrogen oxides include reduction method, plasma activation method, biochemical method, adsorption method and liquid absorption method. The liquid absorption method is a method of absorbing nitrogen oxides in the exhaust gas with water or an aqueous acid, alkali, or salt solution to purify the exhaust gas. Therefore, according to the type of absorbent, it can be divided into: water absorption method, acid absorption method, alkali absorption method, oxide absorption method, absorption-reduction method and liquid phase combination method. Since the lye absorption method ...

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): B01D53/78B01D53/56
CPCB01D53/56B01D53/78B01D2259/124
Inventor 单淼蒋茂勤王霖陆云飞
Owner YIXING YUXING IND & TRADE