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Treatment of nitrogen oxide by negative pressure storage purification method

A technology of nitrogen oxides and purification method, which is applied in the direction of chemical instruments and methods, separation methods, and separation of dispersed particles, which can solve the problems of high cost of absorption equipment, waste of resources, idleness, etc., and achieve better environmental protection effects and lower costs. Effect

Inactive Publication Date: 2017-06-27
曾舟华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The current process has the problem of increasing the tower height to meet the time required for the nitrogen oxide oxidation absorption cycle process, resulting in a large cost of absorption equipment, especially for unstable or intermittent production processes that generate nitrogen oxides. In order to absorb all the nitrogen oxides, it is necessary not only to build an absorption device with a tower diameter suitable for the peak period treatment capacity, but also to increase the tower height to meet the time required for the nitrogen oxide oxidation absorption cycle process.
Absorbers that cost a lot of money to build will be partially or completely idle during off-peak periods or production stoppages, resulting in waste of resources

Method used

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  • Treatment of nitrogen oxide by negative pressure storage purification method

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Embodiment Construction

[0021] Such as figure 1 As shown, it is composed of a storage clean room 9, a liquid storage tank 11, a pump 8, a high level tank 15, and a floating head 5. The storage clean room 9 is placed above the liquid storage tank 11 and overlaps with the liquid storage tank 11 in a small part. The air outlet pipe with vent valve 2 and the air inlet pipe with air intake valve 3 are arranged on the top, the discharge pipe with liquid discharge valve 7 and the gas collection and discharge pipe with gas collection and discharge valve 10 are arranged on the overlapping part of the bottom surface, and the built-in soft The floating head 4 of the pipe connects the flexible pipe on the floating head 4 with the gas collection and discharge pipe, opens a hole on the bottom side for people to enter and exit, and sets the tower cover 12, and the inlet pipe of the pump 8 passes through the pool wall and inserts it into the bottom of the liquid storage pool 11 , the outlet pipe is connected to the ...

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Abstract

The invention discloses treatment of nitrogen oxide by a negative pressure storage purification method and solves the problem that an existing process is high in cost of nitrogen oxide treatment equipment. The treatment is characterized in that by means of the characteristic that nitrogen dioxide is easily combined with water vapor to generate acid mist which is condensed to form acid drops, absorption tower equipment is partially or fully replaced by space and time. According to the method, the cost of the absorption equipment is lowered, and the environmental-friendly effect is more excellent.

Description

[0001] 1. Technical field [0002] The invention belongs to the recovery and treatment of three wastes in chemical production, and in particular relates to a negative pressure storage and purification method for treating nitrogen oxides. [0003] 2. Background technology [0004] Nitrogen oxides include compounds such as nitrous oxide (N 2 O), nitric oxide (NO), nitrogen dioxide (NO 2 ), nitrogen trioxide (N 2 o 3 ), dinitrogen tetroxide (N 2 o 4 ) and dinitrogen pentoxide (N 2 o 5 )Wait. Except for nitrogen dioxide, other nitrogen oxides are extremely unstable and turn into nitrogen dioxide and nitric oxide when exposed to light, humidity or heat. Nitric oxide is a colorless, odorless, poisonous gas that is insoluble in water. Since nitric oxide has free radicals, it is chemically very active. When it reacts with oxygen, it can form a corrosive gas - nitrogen dioxide (NO2). Nitrogen dioxide dissolves in water and reacts with water to form nitric acid or nitric acid ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/78B01D53/56
CPCB01D53/78B01D53/56
Inventor 曾舟华黄林勇杨水彬曾昆
Owner 曾舟华