Applications for gas alarms, gas detectors, and similar devices
1. Industrial and commercial applications
Regarding hotels, restaurants, and hotel kitchens, according to the relevant laws and regulations (National Safety Production Law of the People's Republic of China): all production, storage and use of flammable and explosive materials must be in accordance with (Building Fire Design Code) Article 10.3. 2 Class A factory buildings and places that emit flammable gas and steam should be equipped with flammable gas concentration leak detection alarm devices, and flammable gas detection alarms should be installed reasonably; the gas, coal gas or artificial gas used in restaurant kitchens is flammable, Explosive gas, and there are many people gathered in restaurants and restaurants are the key places to monitor fire and explosion accidents, so it is necessary to install combustible gas alarms.
Mainly produced gases: methane, carbon monoxide, hydrogen, liquefied petroleum gas.
2. Digester
The construction of biogas digesters in various places has not only improved the rural sanitation, reduced the burden on farmers, and protected the ecology. Some have initially formed an ecological agricultural system combining planting and breeding, which is generally welcomed by farmers. However, the pH value of the fermentation materials in biogas digesters requires 68- 7.5, the generated biogas content also needs to be tested.
Main detection: methane, carbon dioxide, pH value.
3. Air quality control
With the enhancement of safety and health awareness, people are more and more urgent to control the air quality or central air-conditioning automatic ventilation in underground garages, rail transit and other spaces. In the fields of municipal pipe network, sewage treatment, urban pipe network and other fields, the municipal government needs to use it to detect chlorine, hydrogen sulfide and other gases in tap water treatment and sewer sewage treatment.
4. Steel smelting
The iron and steel industry is an industrial industry mainly engaged in industrial production activities such as ferrous metal mineral mining and ferrous metal smelting and processing, including mineral mining and dressing of metal iron, chromium, manganese, etc., ironmaking industry, steelmaking industry, and steel processing industry Subdivided industries such as ferroalloy smelting, steel wire and its products are one of the country's important raw material industries. Metallurgical iron and steel enterprises will produce a large amount of by-product "coal gas" (ie: coke oven gas, blast furnace gas, Converter gas), while gas is the best secondary energy for iron and steel enterprises. In order to make full use of secondary energy, there are a large number of gas equipment and facilities in the purification, transportation, storage, pressurization and use of gas. In order to ensure the safe operation of these gas equipment and facilities, operators and maintenance personnel will be exposed to carbon monoxide. Due to the lack of awareness of gas hazards (carbon monoxide and combustible gas) by some personnel, poor prevention, resulting in gas poisoning or explosion accidents occur from time to time. Therefore, the safety protection detection of metallurgical enterprises is very necessary.
Mainly produced gases: (CO) carbon monoxide, (CH4) methane, (H2) hydrogen, (H2S) hydrogen sulfide, (C6H6) benzene, (HN3) ammonia, (CS2) carbon disulfide, (C10H8) naphthalene, phenol, (02 ) oxygen, (CO2) carbon dioxide, (N2) nitrogen.
5. Power industry
Gas detection instruments have a wide market space in the power industry, and can detect sulfur hexafluoride gas generated by power substations.
Mainly produced gases: ammonia, chlorine, hydrogen sulfide, sulfur hexafluoride, oxygen.
6. Polysilicon industry
The production process of polycrystalline silicon is mainly composed of high-purity quartz (reduced by high-temperature coke)→industrial silicon (pickling)→silicon powder (add HCL)→SiCL3 (after crude distillation)→high-purity SiHCL3 (reaction with hydrogen CVD process) →High-purity polysilicon.
7. Coal industry
Coking industry, coal gasification-synthetic ammonia, coal-based methanol, coal-to-synthetic oil, and coal chemical co-production all have extensive demand for gas alarm products, especially for gas detectors such as sulfur dioxide, hydrogen sulfide, carbon monoxide, chlorine, and ammonia. The quantity is very large.
Mainly produced gases: carbon monoxide, hydrogen sulfide, methane, sulfur dioxide, chlorine, ammonia.
8. Chlor-alkali industry
In the production process of chlor-alkali enterprises, poisonous, harmful and flammable gases will leak and even explosion accidents will occur. Ensuring safe production is crucial to the survival of enterprises. The process flow of hydrochloric acid generally includes: hydrogen, chlorine gas → synthesis → cooling → absorption → hydrochloric acid, and the process flow of caustic soda generally includes: raw salt → chemical salt → filtration → neutralization → ion membrane electrolysis → caustic soda.
Mainly produced gases: chlorine, hydrogen, vinyl chloride monomer, acetylene, ammonia and other toxic and flammable gases.
9. Fine chemical industry
Fine chemical industry is closely related to people's daily life. It is as important as food production and is related to national security. Therefore, fine chemical industry is one of China's pillar industries. At the beginning of the new century, fine chemical industry was approved by the State Economic and Trade Commission Listed as one of the development priorities, the guarantee of safe production is the top priority of the fine chemical industry.
Mainly produced gases: combustible gases, concentrations of ammonia, chlorine, methanol, acetone.
10. Aluminum industry
Aluminum all over the world is now produced by electrolytic cryolite-alumina molten salt. The flue gas released during aluminum electrolysis includes gaseous and solid substances. The gas released by normal electrolysis is a mixture of carbon monoxide and carbon dioxide and a small amount of fluoride gas. .
Mainly produced gases: natural gas, chlorine, hydrogen, carbon monoxide, carbon dioxide.
11. Agricultural greenhouses
Vegetables and fruits in agricultural greenhouses will release carbon monoxide, carbon dioxide, oxygen, etc. If the concentration of these gases is too high, the plants in the greenhouse will definitely not be able to bear it. Generally, these gas detectors need to be installed to detect whether the gas concentration in the greenhouse is too high. , Whether it is suitable for the healthy growth of plants, if the concentration is too high, workers need to take certain measures to pump out the gas with too high concentration.
Mainly produce gases: oxygen, carbon monoxide, carbon dioxide, etc.
12. Food, fruit and vegetable cold storage
The fruit and food in the cold storage will produce respiratory heat, and other gases will inevitably be produced, such as carbon dioxide and oxygen. The cold storage is not well ventilated, and the temperature and humidity are too high, resulting in a large number of old molds, producing a musty smell, or a bad smell.
Mainly produced gases: carbon dioxide, oxygen, ozone, formaldehyde.
13. City car exhaust
With the development of social science and technology, there are more and more cars in big cities, and the automobile exhaust seriously affects the quality of air and human life. harmful gas. Automobile exhaust is not only harmful to people, but also poisonous to plants. The secondary pollutant ozone peroxyethyl nitrate in the exhaust can cause necrotic lesions and dead spots on plant leaves.
Mainly produce gases: carbon monoxide, hydrocarbons, ozone, nitrogen oxides, ethylene and so on.
