Tseng topic of nuclear power stations in the interpretation of the meeting of experts from the Ministry of Environmental Protection (NNSA) held made the above remarks.
At the meeting, MEP (NNSA) related experts in the field of nuclear safety officials and the media about China's nuclear power safety management.
Currently, the number of Chinese oil processing in the construction of nuclear power plants in the world, according to the State Council in 2012 approved the "long-term nuclear power development plan," By 2020, China's nuclear power installed capacity will reach 88 million kilowatts, after the United States, ranked second in the world .
Chinese Academy of Engineering, Pan Ziqiang said that nuclear energy belongs to low-carbon energy, a one million kilowatts of electric power nuclear power plants and coal-fired power plant compared to a year can reduce carbon dioxide emissions more than 600 tons, is one of the largest energy reduction effect. At present, China's air pollution, energy is a major source of air pollution. Therefore, he believes that "accelerate the development of nuclear power is a practical and effective way to reduce China's environmental pollution and greenhouse gas emissions."
Deputy director of the nuclear safety supervision department, said Zhao Yongkang, NNSA established a strict monitoring system for nuclear power plant gaseous, liquid effluent nuclear power plant in the external environment and the implementation of "dual system" to monitor, respectively, by the nuclear power plant operating units and nuclear power plant systems where the province's environmental monitoring agency responsible for implementing the radiation environment. "Monitoring results showed that the Chinese operate nuclear power plants were lower than the national effluent discharge limits specified."
Environmental Protection Department of Nuclear and Radiation Safety Center, said deputy chief engineer of Analytical Instrumentation, in order to reflect the safety of nuclear power,
Tseng station, said Department of Environmental Protection (NNSA) will further consolidate the laws and regulations, agency teams, technical ability, spiritual and cultural four cornerstones, strengthen the review of licensing, supervision and enforcement, radiation monitoring, emergency, experience feedback, technology research and development, public communication, international cooperation eight support.
Oil rate include the following aspects:
1 raw materials: raw materials is the key factors affecting the rate of oil, oil crops and can be divided into: oil quality, variety, full degree, humidity etc.. Obviously, cropvarieties, full of moisture for crop yield of oil is the best, can reach a higherpercentage of oil yield.
2 oil equipment: the key point is that, in the raw material selection of equipment, that is to say the peanut crop was selected peanut oil press equipment (preferred screw press), sesame crops on the selection of sesame oil press equipment (recommended hydraulic press), and selecting the equipment also need to pay attention to is: residue containing equipment work pressure, equipment and residual oil rate. Analysis: oilequipment working pressure more big oil rate will be higher, and slag content morelow oil yield is higher, the residual oil rate is low oil yield higher.
3 oil process: raw material decision process.
the origin of raw materials, oil extraction process is also different. Alsoaffecting crop production? Right, because the problems of climate change in different regions of China leads to the four corners of the world crop moisture temperature etc..No raw materials, quality is different. For example: peanut oil belongs to the viscousrate of crops, produce less resistance during the work process, so the temperature ofoil in the press the peanut machine should be moderate, raw materials into thepressing temperature and moisture should be higher, the moisture content of about 2.5%~4%, temperature and press equipment and materials should be between 145~160 degrees.
One of the fault press: don't feed
This is the first step of the most basic, the main reason is because the oil return oiloily, this is with the oil moisture or feeding amount about, general oil humidity control,especially cotton can not be too wet, the processing method of simple problems in accordance with the correct amount of feed don't be anxious, slowly operation,reduced crop moisture, when pressing cottonseed delinting should be carried out, so that you can correct solution not feeding problems.
Fault press two: oil back into the hopper
This problem will appear at the beginning of the press is the problem, this problemcan check whether the tight round row or rows, there may be too much oil oil, thinthickness inspection cake, if too thin is caused by the reasons caused the oil return,the solution is: loose nut so that the oil flow smoothly; adjust the cake thickness, willjoin the press bore out the oil cake. This would solve the problem of oil back into the hopper.
Fault press three: a sudden stop, screw axis card dead
Press suddenly parking problems occur when used in a new press, the reason for thisproblem is generally due to the new machine virgin, not through running and a lot offeed press, there is the cake thickness is too thin, the press bore pressure caused by the increase of. This problem should be in accordance with the purchase of double elephant press with operating instructions, pay attention to when the machine is running voice and the strength of the current.
Fault press four: out of the oil is too low
This problem has been troubling the press user problems, so this problem is due tomany factors, first or oil moisture is not suitable, the second is pressing chamber temperature did not reach the anticipated problems, low. There is a gap, the round row row does not meet the requirements, the last is press accessories wear. This alsoneed to operate in accordance with the standard operating procedures for regular,loose or tight dynamic compression nut, so that the small amount of slag, the smoothflow of oil can solve this problem.
Fault press five: cake with oil
This phenomenon is in the cake when oil touched the cake, oil water appear too muchand exhausting gap is too small will cause this kind of situation, there is the pressparts wear. Solutions can loosen the nut increase exhausting gap, the replacement of the new press accessories.
Fault press six: oily color dark thick
Press oil color dark and thick, the problems affecting oil sales. The cause is due to the squeezing chamber temperature is low, the oil extracting too much oil, dry or mildewand other reasons, this situation should be carefully screened in oil use, the use ofhigh-quality oil as raw material to the press.
Fault seven: low yield oil press
The output of one of the press and the vast number of users are most concerned about, this situation is caused by many factors including: pressing oil no fine processing corresponding, such as cottonseed without de velvet, velvet long words aseasily entangled shaft. The squeezing chamber and the screw is not smooth also can lead to low yield, there is the oil moisture problems, the cake mouth gap is too small,the wear of the press screw are common causes of low yield. Fine processing so weoil before pressing, after replacing the new accessories to a period of running inofficial use in the screw, smooth. Wear parts must be timely replacement replacement.
The squeezing cage in two (upper and lower, horizontal lines) to screw axis in the squeezing chamber are mutually engaged, produced with continuous extrusionpressing cage constant driving force, the material in the germ oil squeezed out.Double stage structure design of high compression ratio, achieve radial pressurestrong, so that the oil may only press, the press is more thorough, residual oil ratethan single screw oil press oil rate lower, oil crops, oil yield is higher, suitable for anyoil crop cold and hot press.
Has the following 8 characteristics:
1, double screw press mechanism without smoothbore meshing screw technology,promote the squeezing chamber, the pressure is large, a squeezing clean, oil ratereaches above 93%, low dry cake residual oil rate.
The double helix axis 2, special design, theory compression ratio, oil in the squeezing chamber after 5 times of compression and expansion, achieving a strong press thick material layer and the thin layer combination.
3, wearing parts adopt carburizing steel manufacturing and the strict heat treatment,high strength, low temperature impact toughness, toughness, wear resistance, long service life.
4, double screw press low-temperature cold pressing technique to cancel the heatpressing, crushing, softening flaking, steaming and stir frying process, productionequipment, no environmental pollution, low power consumption, low manufacture cost.
5, the unique cake mechanism so that the screw axis centering support, when thecake thickness can be timely adjustment;
6, the pressing cage in a vertical plane triangulation, and two ends of the hingesupport. So the squeezing cage no slag accumulation, smooth oil discharge,convenient maintenance and repair;
7, low temperature pressing can retain the integrity of natural bioactive compounds in vegetable oil, such as unsaturated fatty acid, lecithin, vitamin, protein and trace elements. Squeeze the vegetable oil to keep its essence of natural color, smell andtaste of nature.
8, the cold pressed out of the strip pressing cake (meal) is a high value-added food,can be used for animal feed, fertilizer, fuel and protein extraction.