Determination method and determination device for ammonia escape

A measuring device and ammonia escape technology, which is applied in the field of ammonia escape measurement and devices, can solve the problems of short service life of the conversion efficiency sensing element, expensive and complicated instruments, and achieve the avoidance of probe or electrode interference, easy portability and simple device Effect

CN103033600AInactive Publication Date: 2013-04-10WUHAN IRON & STEEL (GROUP) CORP
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2013-04-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a determination method and a determination device for ammonia escape, wherein a filter element is tightly pressed in a filter device, a stainless steel gas inlet tube is movably connected with the filter device, and a gas guide rubber hose is connected with the stainless steel gas inlet tube; the gas guide rubber hose is connected with a gas extraction pump; the gas extraction pump is connected with a gas guide tube, the gas guide tube stretches in an airtight container and is communicated with a gas disperser arranged in the airtight container, and a gas exhaust tube is further arranged at the top of the airtight container; a power supply and a switch are arranged on the gas extraction pump; and valves are respectively arranged on the gas exhaust tube and the gas guide tube. Diffused smoke is filtered and then is sucked in the airtight container filled with a dilute acid aqueous solution, so that ammonia is adequately absorbed by the dilute acid aqueous solution and is converted to ammonia nitrogen in the dilute acid aqueous solution from gaseous NH3. The determination method is simple, fast and accurate; and the device is simple, easy to carry, and convenient to maintain and use.
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Description

technical field

[0001] The invention relates to a method and device for measuring ammonia escape, belonging to the technical field of environmental protection. Background technique

[0002] According to my country's requirements for sulfur dioxide emission standards, flue gas desulfurization has become one of the important links in the production process of thermal power, steel and other enterprises. The ammonia desulfurization process uses a certain concentration of ammonia water as a desulfurizer to remove sulfur dioxide in the flue gas to generate ammonium sulfite, which is then oxidized into ammonium sulfate by-product with air (oxygen) to achieve the purpose of flue gas purification. Ammonia absorbs SO in flue gas 2 It is a gas-liquid reaction, the reaction speed is fast, the reaction is complete, the utilization rate of the absorbent is high, and it can achieve high-efficiency desulfurization.

[0003] Because ammonia desulfurization meets the requirements of circula...

Examples

Embodiment Construction

[0030] Ammonia escape assay method implemented according to the present invention, comprises the steps:

[0031] 1. Connect the ammonia escape measurement device to measure the ammonia nitrogen content X2 (mg / L) of the blank dilute acid solution before absorbing the flue gas;

[0032] First pour the airtight container 10 into a dilute acid solution with a volume V (unit: L) and a pH value less than 5, measure the ammonia nitrogen content X2 (mg / L) of the blank dilute acid solution before absorbing smoke; The valve 9 on the exhaust pipe 11 is closed. Put the filter element 2 into the filter device 1 and tighten it. The stainless steel intake pipe 4 is connected with the filter device 1 through the integral joint 3 and tightened; at the same time, the air guide rubber hose 6 is connected with the air pump 7 and the integral joint 5 and the air tightness is checked.

[0033] 2. Start the ammonia escape measuring device, suck the flue gas in the diffuser / chimney into the airtigh...