Determination method and determination device for ammonia escape

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.

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...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide an economical and practical method for measuring ammonia slip in view of the conversion efficiency problems involved in the current method and device for measuring flue gas ammonia slip, the short service life of sensing elements, expensive and complicated instruments, etc. method, and at the same time provide an economical, practical and portable ammonia slip measurement device

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