Project scale: 5000m³/h, process flow: ammonia-containing waste gas collection port and pipeline → three-stage spray tower → induced draft fan → emission chimney, emission standard: "Emission Standard for Odor Pollutants"(GB14554 -93) ammonia and odor concentration;
The waste gas of this project mainly contains ammonia gas, which has irritating smell and toxicity. According to the characteristics of ammonia solution that is alkaline and easily soluble in water, the absorption method (three-stage spray tower) is used for treatment. The first-stage spray tower uses acidic liquid agents for neutralization and absorption, and the second-stage and third-stage water absorption is used. According to the detection data of the online pH meter in the spray water tank, acid agents are added and the wastewater in the spray water tank is regularly replaced, and the ammonia-containing wastewater is discharged to the sewage treatment station.
Environmental Protection Law of the People's Republic of China (Order of the President No. 9, effective on January 1, 2015)
Law of the People's Republic of China on the Prevention and Control of Air Pollution (Order of the President No. 31, effective on January 1, 2016)
Emission Standard for Odor Pollutants (GB14554 -93)
"Noise Emission Standards for Industrial Enterprises at Boundary"(GB 12348-2008)
Environmental Noise Emission Standard for Construction Plant Boundary (GB12523-2001)
"Low Voltage Power Distribution Design Code"(GB50054-2011)
Code for Power Distribution Design of General Electrical Equipment (GB50055-2011)
Code for Design of Electric Power Engineering Cables (GB50217 -2007)
Functional Signs and Graphical Symbols for Process Measurement and Control Instruments (HG/T20505-2014)
"Regulations on Selection and Design of Automatic Instruments"(HG/T20507-2014)
"Instrument Power Supply Design Regulations"(HG/T20509-2014)
"Instrument Gas Supply Design Regulations"(HG/T20510-2014)
Design Regulations for Signal Alarm and Safety Interlocking Systems (HG/T20511-2014)
Code for Construction and Quality Acceptance of Automated Instrument Engineering (GB50093-2013)
"Instrument Piping Wiring Design Regulations"(HG/T20512-2014)
"Instrument System Grounding Regulations"(HG/T20513-2014)
(1) Implement national policies on environmental protection and comply with relevant national laws, regulations and standards.
(2) Starting from the actual situation, it is necessary to protect the environment and give full play to the engineering benefits to avoid secondary pollutants.
(3) In order to ensure the reliability and effectiveness of the project, improve the automation level, reduce the operating cost, reduce the daily maintenance and repair workload, improve the operating conditions of workers, and select well-known brands with good quality and high efficiency.
(4) The layout of the factory is divided according to functions to ensure a good production and living environment in the factory and meet the requirements of production, living, fire protection and external conditions.
(5) The architectural style of the factory area strives to be unified, concise, lively, beautiful and generous, and is coordinated with the surrounding environment of the factory area.
Warehouses store ammonia-containing raw materials. Ammonia is particularly volatile and forms irritating odors and toxicity in the air, which affects the working environment. It must be collected and purified to ensure the working environment and health of employees.
Process flow ammonia-containing exhaust gas collection port and pipeline→ three-stage spray tower→ draft fan→ discharge chimney
"Emission Standard for Odor Pollutants"(GB14554 -93) ammonia and odor concentration;
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