What about Zhangjiagang Yongfengtai Environmental Protection Technology Co., Ltd.?

Three. The Necessity of Developing Wuhan Kochi Automobile 2008-04-2 1 17: 55 III. The necessity of developing Wuhan Kochi automobile The effective way to reduce automobile exhaust pollution is to use clean automobile fuel. The Clean Air Regulations of the United States defines clean fuel as: fuel or energy that can make automobile exhaust pollution lower than conventional gasoline or diesel, including alternative fuels and specially prepared gasoline and diesel. According to this definition. At present, the clean fuels for vehicles are: electricity, solar energy, methanol, ethanol, new formula gasoline, natural gas and liquefied petroleum gas. Among the above clean fuels, electricity and solar energy can achieve zero emission of automobiles, and methanol and ethanol can also greatly improve automobile emissions. However, because their cost is generally more than 1 times higher than that of gasoline, it is difficult for people to accept them and their promotion is limited. However, natural gas and liquefied petroleum gas have been widely popularized in the world because of their low price and convenient filling service. At present, there are 1.23 million vehicles (NGV) using natural gas, more than 3,000 filling stations, more than 4 million vehicles using liquefied petroleum gas (LPGV) and more than 22,500 filling stations, and the annual consumption of liquefied petroleum gas is about 1.00. There are more than 30,000 natural gas vehicles (NGV, LPGV) and more than 50 filling stations in China. In Sichuan, Chongqing and Shaanxi, Chongqing currently has 276 17 natural gas vehicles, including 5,535 buses and the rest taxis. The natural gas rates are 90% and 100% respectively. 56 gas stations have been built and put into operation, Wuhan Keqi Environmental Protection Technology Co., Ltd.; The number of natural gas vehicles in Chengdu exceeds 12000, mainly buses, taxis, sanitation vehicles and a few private cars. Automobile gas consumption accounts for 25.6% of the city's gas consumption, and more than 40 CNG filling stations have been built: Xi 'an has more than 2000 modified or original natural gas vehicles 10, including taxis10 and 2082 buses; There are 5l filling stations, and the volume of automobile filling gas accounts for 2 1.05% of the city's total natural gas consumption. Therefore, a certain material and technical foundation has been established. The feasibility of gradually promoting the use of natural gas vehicles in China is based on the following points: 1. It is beneficial to the adjustment of energy structure, can reduce the consumption of coal and increase the proportion of natural gas in China's fuel composition. According to statistics, in the primary energy structure produced in China in 1995, coal accounts for 76.9%, crude oil accounts for 18.9%, hydropower accounts for10.9%, nuclear power accounts for 0.4%, and Wuhan Keqi environmental protection only accounts for10.9%, while natural gas is in the world.

2. Adequate air supply guarantee. There are abundant natural gas resources. According to relevant data, the total proven natural gas reserves in the world are 1.40 trillion cubic meters, equivalent to Wuhan Keqi Environmental Protection Technology Co., Ltd.1.23.2 billion tons of oil, and the total natural gas resources in China are 3 8.04 trillion cubic meters. At present, the proven reserves are only10.7 trillion cubic meters. Wuhan Keqi is environmentally friendly and has great potential for reserve resources. The accumulated proven reserves of natural gas in Chongqing are 370 billion M3, the prospective reserves are 565.438+0 billion M3, the recoverable reserves are 265.438+0.58 billion M3, and the current production capacity is 5 billion M3/ year. According to the natural gas reserves and the current mining planning capacity, the service life of Chongqing natural gas field can reach more than 50 years. At present, it has formed a production capacity of 323 billion cubic meters in Sichuan, central and western provinces of China and offshore. With more and more proven natural gas reserves, Wuhan Keqi is environmentally friendly, and the application of natural gas will be more and more extensive, and the position of natural gas in the energy structure will gradually exceed the choice of oil, which has become a knowledge. 3. The technology of natural gas vehicles is mature. It has been more than 70 years since the first natural gas vehicle appeared in the United States in 1930, and the technology is quite mature. The key problem now is how to introduce technologies and equipment that meet the national conditions and achieve the goal of localization through comparative absorption and improvement in the initial stage. 4. Natural gas vehicles have five advantages, excellent emission performance and environmental protection. Natural gas is a kind of clean energy, the main component is methane, and the main products after combustion are carbon dioxide and water. The greenhouse gas it produces is only 1/2 of that of coal and 2/3 of that of oil. Natural gas vehicle is an ideal low-pollution vehicle. Compared with gasoline vehicles, its exhaust emissions are reduced by about 90%, HC by about 50%, NO by about 30%, SO2 by about 70%, C0 by about 23%, particulate matter by about 40% and lead compounds by about 100%. It can be seen that the pollution of natural gas to the environment is far less than that of oil and coal, and it is an excellent green alternative fuel for automobile engines. At the same time, the use cost of natural gas vehicles is lower, and Wuhan Keqi saves about 50% of fuel costs than fuel vehicles. In addition, compared with electric vehicles, natural gas vehicles have a longer driving range. Experts believe that natural gas vehicles are the most promising low-pollution vehicles at present, especially suitable for urban public transport, sanitation vehicles and taxis. It is safer and more reliable to use natural gas and liquefied petroleum gas. The lower explosion limit of natural gas is 5%, which is higher than gasoline (1%), and the ignition point of methane is 645℃, which is 2 18℃ higher than gasoline, so it is not easy to ignite. The density of methane is low, and the relative density is about 0.55. The leaked gas will soon be released into the air, and the explosion limit range is narrow, so it is difficult to form the conditions of thermal combustion in the natural environment. Once compressed natural gas leaks from a storage tank or pipeline, a low temperature zone will immediately form around the leakage point, making it difficult for natural gas to burn.

Table 1 Limit value and natural temperature of natural gas fuel and petroleum fuel combustion

Ignition limit of engine fuel in air% Autoignition temperature℃

Compressed natural gas liquefied petroleum gas. Gasoline and diesel oil 5-152-9 0.7-81.1-8l-450 365 280 240

The gas cylinder of natural gas vehicle is a kind of high-pressure container, and all countries have strict control over its material, manufacture, inspection and test. China has the standard "Compressed Natural Gas Cylinder for Automobile" (GB 17258- 1998), the test pressure is four times of the working pressure, and explosion-proof facilities are installed, which will not cause fire or explosion due to vehicle collision or overturning, while the fuel tank of gasoline vehicle is a pressure-free container. In more than 65,438+0,300 natural gas vehicle collisions in the United States, the natural gas system did not cause any explosion or fire.

The economic performance of fuel is improved and the operation cost is reduced. According to foreign data and the comparative test of Shanghai Public Transport Corporation, when LPG is used as fuel, compared with gasoline, the fuel consumption is not lower than 10%. In terms of price, the current price of LPG for vehicles in Shenzhen (2800 yuan/ton) is 24% cheaper than that of 97# gasoline (3667 yuan/ton) and 17% cheaper than that of 90# gasoline (3334 yuan/ton). The total cost of the two items can be reduced by about 30%.

Table 2 Comparison of Compressed Natural Gas and Gasoline for Automobile

Fuel sheet l car day

highway transportation

Price-driven100km

The daily fuel consumption of each car

Fuel cost/yuan saves fuel cost/yuan per bicycle day.

Gasoline 2002.3 yuan /L 10.0L46.05438+03.3

Natural gas 200 1.8 yuan /m39.6438+0m3338+03.3.

The service life of machine parts is long. When natural gas and liquefied petroleum gas are burned, there is no tar or carbon deposit, so the lubricating oil will not be diluted, the consumption of lubricating oil is small, the combustion operation is stable and the noise is low, so the life of the engine is three times that of gasoline. The thermal efficiency of the engine is high. The octane number of compressed natural gas is greater than 120, which is higher than gasoline and Wuhan Keqi. Even the octane number of high-grade gasoline is only 97, so it has good antiknock performance and obvious advantages in improving engine thermal efficiency. Before the compressed natural gas enters the air mixer, it is evenly mixed with air and distributed to each cylinder. Uniform mixture and full combustion can improve thermal efficiency, accelerate combustion speed and make full use of combustion heat energy.

Four. Several problems to be solved urgently in developing natural gas vehicles. The development of natural gas vehicles in China has just started. Therefore, the society generally doesn't know much about the development of natural gas vehicles, and the support is not enough, especially in land acquisition, examination and approval procedures, building stations to change vehicles, refitting vehicles, annual inspection and so on. It is difficult to develop natural gas vehicles just because of the large investment in adding stations and changing cars, and the government has no laws, regulations and economic support policies. Therefore, it is urgent to solve the following main problems. 1. Strengthen the management and coordination of natural gas vehicles. Natural gas vehicles have become an industry, involving policy, technology, economy and social sentiment. Looking at the development process of natural gas vehicles in the world, they are all government actions and must be coordinated and organized by the competent departments. National and local governments at all levels should establish corresponding organizations. 2. Formulate unified technical standards as soon as possible. Wuhan Keqi Environmental Protection Technology Co., Ltd. is currently developing natural gas vehicles in various places with scattered strength and low technology. The implementation standards are not uniform, and even there are no standards to implement. Therefore, it is urgent to formulate a set of industry or national standards that are both level and in line with national conditions. Fortunately, this problem has attracted the attention of the relevant ministries and commissions of the country, and the standards for filling stations, gas cylinders, conversion devices and modified vehicles are being formulated. 3. The government gives appropriate preferential policies. The government's economic policy is the most important factor affecting the automobile development of Wuhan Keqi Environmental Protection Technology Co., Ltd. In order to protect the environment, many governments in developed countries have formulated preferential measures in terms of price, tax, investment and subsidies, and actively encouraged the automobile development of Wuhan Keqi Environmental Protection Technology Co., Ltd. Our government should play an active role in guiding, supporting and removing obstacles according to the actual situation, such as providing legal protection. Preferential tax and capital policies are given in automobile production, modification, spare parts production, etc. Wuhan Keqi Environmental Protection Technology Co., Ltd.' s gas station construction and automobile purchase and use, for example, the Shanghai municipal government subsidizes the construction of new natural gas buses, the government invests in the construction of gas stations, and entrusts enterprises to operate. These are all effective measures. At present, China is carrying out fuel tax reform. The increase in fuel prices after the tax reform will play an important role in promoting the automobile development of Wuhan Keqi Environmental Protection Technology Co., Ltd.

Many countries in the world have promulgated incentive regulations to encourage private enterprises to jointly develop research and actively promote natural gas vehicles. See Table 3 for the tax incentives given to natural gas vehicles in various countries. Therefore, it is suggested that relevant departments should include natural gas vehicles in the green project plan, torch plan, tax reduction and exemption, and give certain funds and low-interest loans.