Problems and hidden dangers of environmentally friendly washing equipment
First, the environmental problems of the washing equipment occupation
According to the accounting, most of the laundry in China has a small planning and low level, and most of the laundry stores do not meet the environmental protection requirements. The washing industry will inevitably form: 1. pollution to the air 2, pollution to the soil 3, pollution of water quality and damage to human health. It can be said that the washing industry in China is still at the expense of dedication. It is well known that the western developed countries have adopted strict control over the tetrachloroethylene dry cleaning machines.
For example, the maximum concentration of tetrachloroethylene in the United States for 8 hours is 25ppm, the maximum concentration is 100ppm in 15 minutes, and the occupational limit concentration of tetrachloroethylene in Germany is 50ppm. Of course, China has a hard way to introduce the key cities. In order to make our blue sky bluer, mountains and waters, fresh air, washing equipment occupations should promote environmentally friendly washing, green washing, pollution reduction, environmental protection, health, and polyester washing machinery. It is from the beginning of improving the washing equipment, and promoting the green development of the washing profession with practical actions.
According to the investigation of US polyester washing machinery, there are about 300,000 environmentally friendly washing equipments in China. If we charge 10 kilograms of clothing per machine, the daily laundry volume is about 3 million kilograms (97% based on washing equipment recovery rate). To calculate, each washing equipment emits about 0.56 kilograms per day, which means that the amount of tetrachloroethylene discharged into the air every day is about 18,000 kilograms, which is equivalent to 50 barrels of tetrachloroethylene. The consumption of tetrachloroethylene discharged from washing equipment ranks first in the world. In addition to this, the residue contamination procedure after distillation of tetrachloroethylene is also quite serious. According to calculations, the annual residue of tetrachloroethylene in each equipment is 20 kg, and the annual residue in the country is as much as 120 tons. It is understood that China has begun to introduce relevant laws and regulations on the environmental protection of washing equipment tetrachloroethylene residues.
Second, the troubles and dangers of washing equipment
Washing occupation is a profession with more service problems, because washing equipment has two kinds of pressure vessels: 1. steam boiler (ie steam attacker); 2. pressure of washing equipment during distillation, recent attacks The frequency of the incident is very high. According to our understanding of several major incidents in the past few years, the larger one is the 99-year Shanghai ironing machine steam drum blasting, forming a death and injury; 2000 dry cleaning machine distillation box blasting in Chongqing; October 17, 2001, a laundry in Wuhan The shop steam attack device blasting event occurred one death and one injury; on February 5, 2002, in Hubei Ezhou, another dry cleaning machine blasted, forming two deaths and one injury and another major incident. In just 100 days, in the same province, there were two major incidents of blasting of laundry equipment. There are countless such incidents.
There are two main reasons for the incident: First, some non-standard washing equipment manufacturers produce low-quality washing equipment and cut corners. Second, more than 80% of the pressure vessels used in the laundry are not safely produced by boilers. There are no annual inspection methods for washing companies, which leads to aging of equipment and then incidents.