(2) Fire and explosion. Common solvents due to low ignition point, in addition to chlorinated hydrocarbons, are very easy to burn, in addition, explosive is also the cause of public hazards. When the concentration of solvent volatilization in the air reaches the explosion range (that is, between the upper and lower limits of the explosion temperature), any tinder can be detonated.
Noise: mechanical noise, dynamic noise and electromagnetic noise generated during rubber processing will affect the health of workers. At present, there are two ways to reduce noise: one is to improve the structure of rubber machinery and power machinery equipment, improve the quality of processing and assembly, and take measures to reduce vibration; The second is to take sound insulation and noise reduction measures, such as installing removable sound insulation enclosures on the parts of the mixer, the opening mixer and the sheet press, and setting the exhaust system on the top of the processing equipment, which can reduce the noise to about 80dB(A).
2.2 Prevention and control measures and management
The public hazards in the production of rubber industry hinder the sustainable development of enterprises or industries. The public hazards of the rubber industry are easy to be ignored, so active prevention and control measures should be taken.
(1) Find out the performance data related to various rubber raw materials and environmental protection, uniformly formulate toxicity indicators of various raw materials, and take active prevention and control countermeasures.
(2) The enterprise should strengthen the environmental protection mechanism, the implementation mechanism, and assign special personnel to be responsible to ensure that the environmental protection quality in the factory meets the requirements.
(3) Strengthen employees' awareness of environmental protection, and instill knowledge of accident exclusion and emergency treatment.
(4) Strengthen labor protection measures, and install effective ventilation circulation devices in workshops and warehouses where harmful and toxic materials are stored. Strengthen the management of harmful, flammable, explosive and other raw materials, and the outside of various boxes, boxes, barrels and other containers must be marked with the composition, quantity and storage essentials of the materials inside.
Second, the sustainable development of rubber industry
China is one of the world's largest waste rubber production countries, the use of waste rubber situation is becoming increasingly severe. In 2004, China's waste rubber production volume of about 2.72 million tons, including mainly used tires, according to estimates of about 100 million, the output of 1.496 million tons, accounting for 55%, non-tire production of 1.115 million tons, accounting for 41%, factory waste (refers to rubber products in the production of corner materials and waste products, Calculated by 4% of the product) 109,000 tons, accounting for 4%. According to 2005 statistics, the total output of recycled rubber and rubber powder was 1.67 million tons, of which 1.45 million tons of recycled rubber and 220,000 tons of rubber powder. The utilization rate of waste rubber resources in the country is about 65%, but compared with the United States, Japan and other developed countries to reach more than 80%, there is still a certain gap. In addition to tire renovation, the use of waste rubber abroad is mainly used in the manufacture of rubber powder for building materials and combustion heat utilization, while China is currently mainly the production of recycled rubber, rubber powder and tire renovation.
According to rubber consumption estimates, by 2020, the amount of waste rubber will reach more than 6 million tons, if do not change the current use of waste rubber structure, the use of waste rubber situation will be more severe, waste rubber products pollution of the environment will be more prominent, seriously hinder the sustainable development of China's rubber industry. Through the recycling of waste rubber products, the amount of waste rubber products can be reduced. To improve the utilization rate of waste rubber resources, the structure of waste rubber utilization is adjusted by vigorously promoting the tire renovation and the manufacture and application of rubber powder. Therefore, in order to ensure the sustainable development of the rubber industry, we must vigorously promote the implementation of circular economy policies.
1. Further adjust the structure of rubber material. With the development of China's rubber industry, the consumption of rubber materials will inevitably increase with the growth of open source and throttle, try to expand the production of natural rubber and synthetic rubber, increase varieties, and continue to expand the production and application of other polymer materials.
2. Apply high-tech to adjust the structure of rubber products. The application of high and new technology to vigorously adjust the structure of rubber products such as tires is a measure to fundamentally realize the circular economy of rubber industry in the production process, in order to improve quality and reduce consumption, extend product life, reduce the amount of waste rubber products, in order to achieve the purpose of saving resources and protecting the environment.
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