Comprehensive treatment of waste gas of Yantai Wan Qing Fine Chemical Co.
Yantai million fine chemicals Co., Ltd. is engaged in liquid crystal materials, pharmaceutical intermediates and other fine chemical products research, development, production and export of self - owned high-tech enterprises listed. Commissioned by the company, Xuzhou Longtai environmental protection equipment manufacturing Co., Ltd. prepared a preliminary design program for its odor gas treatment. We are guided by the principle of mature and reliable process, reasonable overall layout, convenient operation and management and low processing cost.
Project overview
1., this project is the waste water treatment project of Wan Feng sewage station, the basic situation of waste gas treatment:
The exhaust emission is about 30000m3/h.
The main gas components are tetrahydrofuran, methanol, ethanol, toluene, petroleum ether, ethyl acetate, hydrogen sulfide, n-hexane and methylene chloride.
The total VOC concentration was 300 - 500ppm;
2., Dragon Environmental Protection of the project waste gas purification, including waste gas treatment program, design, construction and installation debugging.
Exhaust gas cleaning target
Help enterprises to adopt scientific and reasonable collection methods, in order to achieve the effect of collecting the premise, as much as possible to reduce gas.
Actively adopt new technology, new equipment, combined with the present situation and management level of enterprises with pollution control technology advanced, reliable, stable operation, and strive to low cost, convenient management, easy maintenance, so as to eliminate pollution, protect the environment for the purpose.
Solution
Purification process / process characteristics, safety, purification efficiency, total investment
(one-time investment + operating costs) energy consumption, there are two pollution?
UV lights are unsafe and generally high
Water (chemical) spray + activity
Carbon adsorption (caustic soda),
Hydrogen peroxide, etc.) safe in general
(likely to fail) low high solid waste treatment
Combustion method is unsafe, high, very high
Low temperature plasma is unsafe
(organic waste gases flammable and explosive) high, high, none
LTAOP high safety (95% +) moderate
(operating cost is 1/10 of activated carbon) low none
Biological filter safety is generally high
LTAOP technology principle
The ozone generator generates a positive charge with positive charge of ozone molecules O3+, positive charge, ozone formation of a large number of hydroxyl groups on special oxidation accelerator LTC-A/B developed by our company under the action of (OH), hydroxyl (OH) has a strong oxidation ability. In advanced oxidation decomposition, O3+, involved in the direct reaction of OH in indirect reaction in PH. 4 under the condition of 90% completed by indirect reaction. Especially for the decomposition of odorous gases, the decomposition rate is over 95% after direct and indirect reactions.
Technological process
Waste gas treatment process
The exhaust gas through the pipeline into the collection after Longtai LTAOP advanced oxidation system, advanced oxidation system can produce a large number of hydroxyl radicals and ion agent active groups, and the harmful pollutants of active free radical reactions, a large number of harmful pollutants are decomposed into two carbon dioxide, water, harmless "low-temperature plasma into carboxylic acid purification of reaction chamber, in the region because of the high-energy particles, 1) to eliminate the visible smoke, mist particles into the gaseous liquid exclusion. 2) the odor molecules like excited molecular bond breaking, and the water in the air and oxygen will produce - OH, O - reactive oxygen and ozone oxidizing substances in high-energy electron bombardment, these strong oxidizing substances react with odor molecules, which is decomposed, so as to promote the smell eliminate. The residual harmful substances after reaction into the catalytic oxidation system for further processing, hydroxyl radical and ion agent reactive groups in catalytic oxidation agent and residual harmful pollutants react again harmful pollutants to be completely decomposed into carbon dioxide, water and harmless acid after discharge. This scheme not only has high efficiency, but also can efficiently remove tetrahydrofuran, methanol, ethanol, toluene, petroleum ether, ethyl acetate, hydrogen sulfide, n-hexane and dichloromethane, and has low operation and maintenance costs.
LTAOP process flow diagram
After-sale service
In order to enable the owner to operate the relevant equipment properly and ensure the normal operation of the system, technical training is needed for the relevant personnel. It includes basic knowledge, facilities, operation methods and emergency handling methods. We provide free personnel training two times. The first training site is on the spot, with the basic knowledge of waste gas treatment. The second training site is also on the spot. The contents are the operation methods of the waste gas treatment station and the emergency treatment methods. The whole training plan is completed during the commissioning of the waste gas treatment facility.
The formal transfer of owner management in equipment, regular customer service service actively, strengthen ties with the owners, the owners in the operation process of solving difficulties, achieve "active service, regular visits, the call will be needed to", specifically:
Active service, regular visits every 3 to 6 months of active telephone interviews, to understand the actual situation of the project, solve the equipment problems; a site visit active site each year, to understand the actual situation, solve problems, improve project quality.
The call will be needed, as long as the owner to put forward the question, will give a satisfactory answer, can solve the off-site, by telephone, fax, email, provide detailed solutions to solve; off-site, the company will be based on the actual situation, after receiving phone owners after 1-2 working days arrived on the scene to solve the relevant problems. For the situation in the operation of the project, whether it is quality problems, or due to improper operation of the owners caused by problems are properly addressed, so that the owners satisfaction.