Yantai Wanhua chemical group Limited by Share Ltd gas treatment project
Yantai Wanhua chemical group Limited by Share Ltd (Yantai Wanhua) was founded in December 20, 1998, is the first in Shandong province after the first restructuring of listed joint-stock company. In 2011, the company achieved sales revenue of 13 billion 660 million yuan and net profit of 1 billion 850 million yuan. 2004-2006 was selected for three consecutive years of "new financial" China version of the beautiful 50- Chinese most of the growth of the A shares of Blue-chip company; 2006 CCTV economic channel named 2005 most valuable listed company "; in 2007 won the" 2007 - CCTV China annual best employers "title, and with an annual output of 200 thousand tons of large-scale MDI production technology and development industrialization" project, won the 2007 first prize of national science and technology progress; in 2008, Ningbo Wanhua company 160 thousand tons / year MDI project named "national environmental friendly projects"; 2009 polyurethane industry's only national engineering technology research center was officially settled in Yantai Wanhua; 2009, Ningbo Wanhua annual output of 160 thousand tons MDI project won the "Gold Award" the National Quality Award; 2010, "Yantai Wanhua science and technology innovation system project" won the two national science and Technology Progress Award in 2009; In 2011, the company won two times in a row, "Hewitt best employer award China.
Yantai Wanhua chemical group Limited by Share Ltd
The company is mainly engaged in MDI based isocyanate series products, aromatic amines series products, thermoplastic polyurethane elastomer products research and development, production and sales, is the largest in Asia Pacific manufacturing enterprises MDI. At present, the company has a total of three sets of MDI devices, production capacity of 1 million tons / year, and product quality and unit consumption have reached international advanced level.
Wanhua chemical always adhere to customer demand as the guide to technological innovation as the core, to talent as a fundamental, with a solid foundation for operational excellence, with excellent culture as the guarantee, around new chemical materials in the field of high technology, high added value, the implementation of the integration of related diversification (market, Technology), fine and low cost development strategy, committed to the development of the global operation of first-class new chemical materials company.
Commissioned by the company, Jiangsu 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.
Basic survey of the project
1. the project for Yantai Wanhua chemical group sewage station waste gas treatment project, the basic situation of waste gas treatment:
The exhaust emissions of approximately: high concentration wastewater of low concentration of 91489m3/h gas, sewage and waste gas exhaust gas waste 98511m3/h, 14809m3/h, the total air volume: 204809 m3/h.
The main gas components are hydrogen sulfide, nitrogen, carbon dioxide, ammonia, hydroquinone, ethyl acetate, formaldehyde, nitrobenzene, aniline, chlorobenzene, acid and so on.
The concentration of odor is (dimensionless): 4000
2., dragon, ozone, waste gas purification for this project, including waste gas treatment program, design, construction and installation debugging.
design basis
According to the ambient air quality standard (GB3095-1996), the standards for the discharge of odorous substances (GB14554-93) and the comprehensive emission standards for atmospheric pollutants (GB16297-1996), the requirements for air pollutants discharge are described.
Design principle
(1) to help enterprises to adopt scientific and rational collection methods, in order to achieve the effect of collecting the premise, as much as possible to reduce gas. (2) 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 of. (3) properly solve the pollutants generated during the construction and operation of the project, and avoid the two pollution. (4) strictly implement the current norms, regulations and standards promulgated by the state and local, such as fire prevention, safety, sanitation and environmental protection. (5) select new, efficient and low-noise equipment, pay attention to energy saving and consumption reduction. (6) the general layout is compact, reasonable and smooth, simple and practical. Minimize the project area and construction difficulty. (7) strictly implement the relevant state design standards and standards, and attach importance to fire control and safety work. (8) according to the national and local environmental laws, regulations and industrial policy requirements, the industrial pollution should be treated, and the social, environmental and economic benefits of the construction project will be brought into full play.
The applicable range and advantages and disadvantages of several waste gas treatment processes
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.
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