Alcohol fuel policy

Alcohol-based fuel is mainly mixed with methanol, which is not illegal in itself, on the contrary, it conforms to the national energy conservation and environmental protection policy. However, fuel is a dangerous chemical, and it is more complicated to go to the local for approval. Moreover, due to the low threshold of employment, many individual workshops are mostly operated without a license because of the trouble of obtaining a permit.

Alcohol-based fuels are dangerous goods, which need to be handled when operating: industrial and commercial business license, hazardous chemicals production license, hazardous chemicals business license, storage license, vehicle transportation license, and the site must meet fire control requirements.

Extended data

The main body of alcohol-based fuel is methanol, which is classified as Class 3.2 flammable liquid with flash point in Classification and Labeling of Common Hazardous Chemicals (GB 13690-92). For a long time, because the project conforms to the industrial policy and the name of alcohol-based fuel is not listed in the Catalogue of Hazardous Chemicals Management, only methanol is listed in the Catalogue of Management. Therefore, the safety supervision departments in many places almost always hold the attitude that more things are better than less things, and have not done too much restraint and supervision. And let the industry develop to today.

However, since 20 12, the supervision of hazardous chemicals is no longer based on not entering the management catalogue, but has a more scientific measurement standard (flash point), which is professionally called closed flash point. Alcohol-based fuels are naturally included in the management of hazardous chemicals with low flash point 12- 13℃. All production, operation, storage and transportation are controlled and restricted by the Regulations on the Management of Hazardous Chemicals issued by state administration of work safety. Therefore, the industry has been standardized and the entry threshold has been improved.

Alcohol-based fuels have national standards. As early as 1996, GB? 16663- 1996 alcohol-based liquid fuel was formulated by the state bureau of technical supervision on the basis of Sichuan local standard db 51181-93 synthetic liquid fuel. Subsequently, 1997, the Ministry of Agriculture issued NY311997 "Alcohol-based Civil Fuel" industry standard, and at the same time issued NY3 12- 1997 "Alcohol-based Civil Fuel Cookware" industry. These three standards are of great significance to standardize the production and use of alcohol-based fuels and stoves.

Because the alcohol-based fuel technology at that time was still in the development stage, there were inevitably some problems in the production and use of fuels and stoves:

1. There are some problems in the technical conditions related to the national oil standard: Compared with the technical conditions of the national oil standard, it can be seen that the hydrocarbon content of alcohol-based fuels is not clearly defined in the technical conditions of the national oil standard, which makes the fuel production enterprises have a great deviation in implementing the national oil standard, because the saturated vapor pressure of alcohol-based fuels will increase with the increase of temperature. Because most alcohol-based fuels use crude methanol as the main raw material (mainly considering its economy), the calorific value is low. In order to improve its calorific value, manufacturers should add hydrocarbons to the fuel, usually adding light hydrocarbons, such as liquefied gas residue, gasoline and so on.

However, the saturated vapor pressure of alcohol-based fuel will increase exponentially with the increase of temperature after adding hydrocarbons. If this kind of alcohol-based fuel with high hydrocarbon content is used on the cooker, there is a great hidden danger, that is, it is easy to blow up the cooker. In addition, through the experimental verification, the hydrocarbon content ≤20% in the fuel standard technical conditions is also set on the high side.

2. There are operational loopholes in the line label of the cooker: the line label of the cooker clearly stipulates that the rated working pressure of the cooker is ≤0.2MPa, but it is not clearly stipulated that the minimum content of hydrocarbons must be guaranteed in the alcohol-based fuel used in the test when the working pressure of the cooker is tested. If such regulations are not formulated, it is easy for manufacturers of cooking stoves to take advantage of loopholes. In case of stove explosion, it is difficult for technical supervision departments to supervise and identify according to the standards, because both fuel production enterprises and stove production enterprises can say that their products are produced in strict accordance with the national fuel standards or the technical conditions of fuel standards and stove standards.

Experimental results: Through a large number of experiments, we found that alcohol-based fuel contains more than 10% hydrocarbons, especially light hydrocarbons (such as liquefied gas residue), and the working pressure of the cooker rises very quickly. It is very dangerous if the content of hydrocarbons in alcohol-based fuels is not clearly defined.

References:

Baidu Encyclopedia-People's Republic of China (PRC) Renewable Energy Law