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Ammonia-containing waste gas recycling device and method

A waste gas recovery and waste gas technology, applied in the direction of ammonium carbonate/acid carbonate, etc., can solve the problems that affect the economic benefits of waste water and waste gas of enterprises, secondary solid waste, and low value of ammonium sulfate, and achieve the realization of Recycling of resources, reduction of processing costs, and high recycling value

Pending Publication Date: 2020-07-24
NINGBO SHANGFUYUAN ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above is the use of sulfuric acid solution as the absorption liquid. The converted ammonium sulfate has low usable value and is easy to form secondary solid waste, which affects the economic benefits of enterprise wastewater and waste gas treatment. Combined with cost reasons, it has certain defects.

Method used

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  • Ammonia-containing waste gas recycling device and method
  • Ammonia-containing waste gas recycling device and method
  • Ammonia-containing waste gas recycling device and method

Examples

Experimental program
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Embodiment 1

[0040] refer to figure 1 , image 3 and Figure 4 , the present embodiment provides a device and method for recycling waste gas containing ammonia. The device for recycling waste gas containing ammonia includes: a reaction tower group, a precipitation tower group, and a carbonic acid generation mechanism; the reaction tower group includes at least one reaction tower 1, and the reaction tower 1 is provided with an ammonia waste gas interface 2 near the lower end, and a reaction tank 3 for forming an ammonium carbonate solution is provided in the reaction tower 1, and the carbonic acid reacts with a sufficient amount of ammonia to form an ammonium carbonate solution; the reaction tower 1 is provided with multiple In the spray pipe 4 of spraying carbonic acid; Precipitating tower group comprises at least one precipitating tower 5, is provided with the precipitating pool 6 that is used to form supersaturated ammonium bicarbonate solution in the precipitating tower 5, and the bott...

Embodiment 2

[0054] refer to figure 2 , the present embodiment ammonia-containing waste gas recovery and reuse device, the difference with the first embodiment is: the first carbonic acid mechanism of the present embodiment can also prepare carbonic acid by the aeration method, including the H 2 O water inlet 10 and the first CO 2 Air inlet 11, the bottom of reaction pool 3 is provided with the first CO 2 The first aeration pipe 14 connected to the air inlet 11, the circulation port 15 of the reaction tank 3 is connected to the spray pipe 4 through the circulation pump 13, the CO at the first aeration pipe 14 place 2 with H 2 H connected to O water inlet 10 2 O reacts to form carbonic acid. Wherein, the reaction tank 3 of the device is provided with a liquid level detector, and after the liquid level is lower than the set height, H 2 O water inlet 10 is opened and drained.

[0055] The second carbonic acid mechanism of the present embodiment can also prepare carbonic acid by a press...

Embodiment 3

[0060] refer to Figure 7 , the difference between this embodiment and Embodiment 1 and Embodiment 2 is that: the first carbonic acid mechanism prepares carbonic acid by pressurized gas-dissolving method, and the second carbonic acid mechanism prepares carbonic acid by pressurized gas-dissolved method; it is actually figure 1 9 parts of the first carbonation tank and figure 2 The combination of the second carbonic acid dissolving tank 25 parts.

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Abstract

The invention provides an ammonia-containing waste gas recycling device and method. The device comprises a reaction tower and a precipitation tower. An ammonia waste gas connector is arranged at the lower end of the reaction tower, a reaction tank for forming an ammonium carbonate solution is arranged in the reaction tower, and carbonic acid reacts with sufficient ammonia gas to generate the ammonium carbonate solution; a plurality of spraying pipes for spraying carbonic acid are arranged in the reaction tower at intervals; a precipitation tank for forming a supersaturated ammonium bicarbonatesolution is arranged in the precipitation tower, the bottom of the precipitation tank is a conical tank bottom, a precipitation discharge port is formed in the bottom of the conical tank bottom, andthe liquid outlet of the reaction tank is connected with the liquid inlet of the precipitation tower. With combination of the device and the method, ammonia gas in the waste gas can be recycled as much as possible, the obtained ammonium bicarbonate crystals are easy to recycle and practically apply and sell, the problem that evaporation crystallization is required traditionally is solved, the method can be realized by utilizing the supersaturated precipitation principle, secondary solid waste cannot be formed and the economic benefit is high.

Description

technical field [0001] The invention relates to the technical field of chemical equipment, in particular to a device and method for recycling waste gas containing ammonia. Background technique [0002] With the advancement of science and technology and the development of the economy, many industries such as industry, agriculture, and aquaculture are producing and discharging waste gas and wastewater all the time, and environmental protection issues have become increasingly prominent. [0003] At present, the excessive discharge of ammonia nitrogen directly affects the environmental protection treatment of waste gas and waste water of chemical enterprises, and has become a bottleneck restricting the sustainable development of enterprises. The treatment of ammonia nitrogen waste gas and waste water has become the primary environmental protection issue of relevant chemical enterprises. For the treatment of ammonia nitrogen waste gas wastewater, if the traditional blow-off adsor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01C1/26
CPCC01C1/26
Inventor 周春江樊建孙佳庆
Owner NINGBO SHANGFUYUAN ENVIRONMENTAL PROTECTION TECH CO LTD
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