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#101 Gönderildi : 19 Ocak 2022 Çarşamba 04:38:50(UTC)
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Sıralama: Üye

Madalyalar: Yeni üye: 10

Katılan: 8.3.2021(UTC)
Mesajlar: 183
Hong Kong
Konum: 香港

The evaporation loss of petroleum and its products during processing, storage and transportation is an important problem perplexing the petroleum and environmental protection industries.
If no action is taken, the impact on people's health, the economy and the environment will be serious. Therefore, it is urgent and important to promote and adopt oil and gas recovery technology.In this paper, the basic principles of four oil and gas recovery technologies such as adsorption method, condensation method, absorption method and membrane separation method are described, and the oil and gas recovery technology based on adsorption method is systematically analyzed.A kind of activated carbon material suitable for oil and gas recovery system by adsorption method was selected according to the design requirements.
The main equipment of oil and gas recovery system by activated carbon adsorption method, the activated carbon tank, is designed and calculated, and its strength is checked.imagitarium activated carbon pellets
The flowchart of the oil and gas recovery system by activated carbon adsorption in the laboratory of Environmental Engineering Department is also drawn, and the system is simulated in three dimensional.
Finally, the economic and technical analysis of activated carbon oil and gas recovery technology is carried out, and it is considered that the application of activated carbon adsorption oil and gas recovery system will bring obvious social benefits, environmental benefits and economic benefits, and has a wide application prospect.www.powdered-activated-carbon.com
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#102 Gönderildi : 19 Ocak 2022 Çarşamba 04:40:11(UTC)
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Sıralama: Üye

Madalyalar: Yeni üye: 10

Katılan: 8.3.2021(UTC)
Mesajlar: 183
Hong Kong
Konum: 香港

At present, China has applied some flue gas purification technologies such as wet, semi-dry, dry desulfurization, selective catalytic reduction denitration, wet combined desulfurization and denitration technology, electron beam method and so on.
These technologies are developed and applied only for one kind of pollutant, resulting in problems such as resource waste, large initial investment and high operating cost.
Therefore, it is an important subject for sustainable development to study the green and environment-friendly integrated flue gas purification technology with high efficiency, low cost and no secondary pollution.Activated carbon has a large specific surface area, good microporous structure, strong regeneration ability, is a good adsorption material.
Activated carbon can realize desulfurization and denitration at the same time, no secondary pollution and renewable utilization of resources.At present, the adsorption device of activated carbon adsorption process reported in the literature is mainly fixed bed, and this process has the disadvantages of large equipment, large bed resistance, poor continuity and so on.
In this paper, the activated carbon desulfurization and denitration test bed, with the circulating fluidized bed as the main adsorption device, the activated carbon desulfurization and denitration test study.Circulating fluidized bed flue gas purification technology can effectively avoid the shortcomings of the fixed bed adsorption process, such as complex equipment, large space occupied, and unstable bed resistance, etc., and the good cooperation with the bag filter can achieve the continuity of activated carbon adsorption and regeneration.gold adsorption on activated carbon
In this paper, the removal of SO2 and NO from flue gas by wood powdered activated carbon was studied in a pilot scale test rig.Some factors affecting the efficiency of desulfurization and denitration were analyzed through experiments, and economic analysis was made on the technology of combined desulfurization and denitration with activated carbon.>www.chinactivecarbon.com
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#103 Gönderildi : 19 Ocak 2022 Çarşamba 04:41:23(UTC)
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Sıralama: Üye

Madalyalar: Yeni üye: 10

Katılan: 8.3.2021(UTC)
Mesajlar: 183
Hong Kong
Konum: 香港

(2) determination of activated carbon to join before and after the join in cigarette smoke volatile) base material, phenolic compounds, 5 kinds of volatile organic compounds (1, 3 butadiene and isoprene, acrylonitrile, benzene and toluene) and aroma composition to release a quantity to change, discusses the structure, the nature of the compound, activated carbon and filtration efficiency of flue gas composition. The results show that the activated carbon has a general filtering effect on flue gas compounds, but the filtering degree of different compounds is different. The filtration efficiency is mainly related to the specific surface area and micropore volume of activated carbon. When the particle size is certain, the filtration efficiency increases with the increase of specific surface area and micropore volume of activated carbon. When the specific surface area and micropore volume are close to each other, the smaller the carbon particle size is, the higher the filtration efficiency of flue gas components is. Microporous high percentage of carbon retention ability of small molecules, of acetaldehyde, 1, 3 - butadiene and isoprene small molecule compounds, such as high filtration efficiency, high percentage and microporous carbon mass transfer resistance is big, such as phenolic half less volatile components of filtering, appropriately increase large and medium hole and transitional channel will increase the filtering of macromolecular compounds. The filtration efficiency was related to the properties of the compounds, especially the molecular weight and boiling point of the compounds. imagitarium activated carbon pellets compounds was significantly lower than that of volatile compounds) and five volatile organic compounds, and the filtration efficiency of binary phenol was lower than that of monophenol. The filtration efficiency of aromatic compounds decreased with the increase of molecular weight boiling point.www.powdered-activated-carbon.com
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#104 Gönderildi : 19 Ocak 2022 Çarşamba 04:42:45(UTC)
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Sıralama: Üye

Madalyalar: Yeni üye: 10

Katılan: 8.3.2021(UTC)
Mesajlar: 183
Hong Kong
Konum: 香港

Combined with unique flue gas generator and gas circuit switching and high rate of dilution technology, established a new type of impact based on the online detection of cigarette smoke aerosol particle size distribution of test method and the device, when implemented by suction mouth fresh smoke aerosol particle size size, concentration and distribution state of real-time detection, to evaluate the new additives, Cigarette auxiliary materials provide a new method for analyzing the effects of aerosol particles in smoke. After observing the stability of the device and the repeatability of the method, the aerosol particle size distribution characteristics of several activated carbon cigarette smoke were detected by using this method. It was found that the addition of activated carbon could effectively reduce the particulate matter content in the mainstream cigarette smoke, but had little effect on the particulate matter distribution state. The specific surface area and pore size distribution of activated carbon have a certain influence on the number concentration of aerosol particles. The higher the specific surface area, the stronger the adsorption capacity, and the less the number of particles. When the specific surface area is similar, the pore size distribution has an important effect, and the activated carbon with larger pore content is more favorable for the filtration of flue gas particles. The particle number concentration of seven samples of flue gas aerosol particles above 99% was concentrated in the range of 0.007~ 0.948um particle size, and the mass concentration was concentrated in the range of 0.262~ 9.910um particle size. Both particle number concentration and mass concentration showed an upward trend with the number of suction ports. The average particle number concentration of mainstream flue gas aerosol was 6.46×108~8.86×10° /cm' per puff, and the average mass concentration was 3.13×10+~ 3.85×10' mg/m' per puff. The total particle number concentration in a single cigarette was 3.88×109~5.31×10° /cm3. The total mass concentration ranged from 1.88×105 to 2.31×105mg/m3.gold adsorption on activated carbon
In order to further understand the effect of the pore structure of activated carbon on the filtration efficiency of cigarette mainstream smoke and the difference of the filtration efficiency between gaseous compounds and granular compounds, the adsorption selectivity of activated carbon on two important harmful components (sputum-based compounds and phenolic compounds) in cigarette mainstream smoke was also investigated. It was found that there was a significant correlation between the filtration efficiency of seven phenolic substances in the mainstream smoke of cigarettes and the filtration efficiency of particulate matter. The filtration efficiency of activated carbon for several monophenols was significantly higher than that of bisphenol, in which o-cresol had the highest filtration efficiency, followed by phenol. Activated carbon has a better adsorption effect on sputum-based compounds in the mainstream smoke of cigarettes. The larger the specific surface area of activated carbon is, the higher the filtration efficiency is. When the specific surface area is similar, the smaller pore size of activated carbon has a higher filtration efficiency. The activated carbon has the highest filtering efficiency for crotonaldehyde and the lowest filtering efficiency for acetaldehyde. The filtration efficiency of activated carbon for gas phase composition was significantly higher than that for granular phase composition. When the addition amount of activated carbon for six different pore structures was 23 mg/ branch, the total granular phase could be reduced by 3.75%-12.49%. The total phenolic compounds could be reduced by 2.92% ~ 13.68%. The total amount of sputum-based compounds could be reduced by 9.51% ~ 35.05%.>www.chinactivecarbon.com
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#105 Gönderildi : 14 Şubat 2022 Pazartesi 07:45:00(UTC)
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Sıralama: Üye

Madalyalar: Yeni üye: 10

Katılan: 8.3.2021(UTC)
Mesajlar: 183
Hong Kong
Konum: 香港

emissions.It is estimated that more than 30 million tons of organic matter are released into the atmosphere worldwide every year, posing a serious threat to human health and plant and animal growth.Organic pollutants are mostly produced in industrial processes.
In painting, printing, shoe making, plastic, rubber, bonding and other industrial processes, there are a large number of organic waste gas emissions.These waste gas, often contain benzene, toluene, xylene, ethyl acetate, methanol and other organic matter, itself toxic, long-term damage can lead to human death.The emission of this kind of waste gas, countries have clear provisions, strict control of its emission concentrationThe treatment of organic waste gas has been studied for a long time, and some effective control technologies have been developed.The widely used and studied control techniques include adsorption method, thermal destruction method, condensation method, absorption method, etc.
Among them, the adsorption method is widely used.Compared with other methods, the adsorption method has the advantages of high removal efficiency, thorough purification, low energy consumption, mature technology, recovery and solution, easy popularization and practical, and has good environmental and economic benefits.Activated carbon is the most commonly used adsorbent because of its huge specific surface area, large adsorption capacity, easy regeneration, abundant sources and low price.Although the application of charcoal as an adsorbent, human beings have had a long time, but the study of adsorption theory, but only in the end of the last century began to make progress.activated carbon manufacturers
In 1916, Langmuir studied the adsorption of monolayer molecules and proposed the Langmuir adsorption isotherm equation.Freundlich and Zsigmondy proposed the capillary condensation theory for gas adsorption and obtained the semi-empirical Freundlich adsorption isotherm equation.Temkin also suggested a semi-empirical isothermal equation.
Based on Gibbs equation, Toth used dimensionless function V to derive another adsorption isotherm equation for heterogeneous surfaces.Fowler and Guggenhein derived a formula of the same form from the concept of statistical mechanics.Goldmann and Polanyi proposed the adsorption space theory, which believed that the continuous decrease in the molecular density of multiple layers on the surface of the adsorbent was caused by the weakening of the adsorption molecular forcepowdered activated carbon (pac)
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#106 Gönderildi : 14 Şubat 2022 Pazartesi 07:47:24(UTC)
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Madalyalar: Yeni üye: 10

Katılan: 8.3.2021(UTC)
Mesajlar: 183
Hong Kong
Konum: 香港

"Activated carbon production and construction project" belongs to zhoukou xyz co., ltd. plans in zhoukou economic development zone (new) projects, proposed the project the total area of 25072.53 square meters about 37.59 acres), is expected to total investment of 95.0984 million yuan, including: investment in fixed assets of 83.8144 million yuan, flow capital of 11.284 million yuan, is expected to comprehensive income for 94.17 million yuan.
The economic situation this year is generally characterized by a steady but positive trend, and more positive changes have taken place in economic development.
Stability is reflected in the fact that the economy performed within an appropriate range, growth became more stable, and the quality and performance of the economy continued to improve.
The economic structure has continued to improve. Innovation is playing an increasingly important role in underpinning development. The service sector accounts for a larger share of the economy, and consumption is contributing more to growth.activated carbon manufacturers
Stability is also reflected in new breakthroughs in reform and opening up.The polishing slurry and processing technology of micro-abrasive slurry jet were studied.
Through the analysis of the physical and chemical properties of additives and their state changes under the jet, the comprehensive effects of the types and proportions of different additives, as well as the types, proportions and particle sizes of abrasive on the formation of uniform slurry, the promotion of good abrasive dispersion and the jet polishing effect were explored.
The effects of different types of nozzles, polishing slurry, jet distance, jet time, different initial RA, jet pressure and jet Angle on the surface profile, material removal depth and surface quality of the workpiece were studied through polishing experiments.powdered activated carbon (pac)
The local Ra of the optical glass surface is in the range of 20nm~50nm by MASJP, and the lowest Ra is 10.24nm.
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