In the face of fierce competition in the international market, business difficulties, rising labor costs, China's PVC production companies have long been on the verge of losses. With limited input costs, how to reverse the situation, entrepreneurs are faced with solutions that bear the brunt of technological innovation and cost savings.
Nowadays, China’s key project pilot enterprises have implemented effective measures to expand and reduce consumption in the full-load production of 100,000 t/a PVC units, and have succeeded in reducing the consumption of calcium carbide in the production of PVC for enterprises. The cost of production contributes to reducing losses and turning losses.
The pilot companies have good physical and geographical conditions, and are favorable for the transportation and storage of calcium carbide. The climate in northern Shaanxi is dry, with little rain and snow. The average annual temperature is 8.5°C, the average annual precipitation is 391.6mm, the annual average relative humidity is 56%, and the weather is clear in one year. Can account for 80%, is conducive to the transport and storage of calcium carbide. The failure of calcium carbide to meet water vapor can reduce the loss caused by reactions during transportation. The calcium carbide manufacturers are basically within 200km radius. The exposure time of calcium carbide is very short, and most of the calcium carbide shipped is a thermoelectric stone, and some of the calcium carbide are Before entering the warehouse, the temperature is still high, and the hydrolysis reaction is less likely to occur. Therefore, the ash on the calcium carbide hydrazine can also be comprehensively used. Through statistical calculation, it can be known that the electric lime accounts for about 1.8% of the total mass of the calcium carbide.
Because pilot companies have good calcium carbide transportation and storage conditions and do not produce a small amount of gas ash, the ash produced during the crushing process can be reused. These units can also generate 15-20 L/kg of gas production. At present, the pilot enterprises have built a set of electric lime recovery system to recycle the ash produced by crushing. The anti-static tube should be used for the feeding hose, and the cyclone separator and the vacuum pump must be electrostatically grounded to prevent the accumulated acetylene gas from being subjected to electrostatic explosion. The problem of the amount of added, if the amount is too large, will cause a sudden increase in generator pressure, there is a safety hazard, while acetylene gas will also carry away a lot of calcium carbide slurry, so that the slurry separator and washing tower load increases, It is easy to plug the packing and cause the generator pressure to rise (the feeding amount can be controlled by the plug valve below the cyclone). After the device is in operation, except for rainy days, it will not be recovered due to safety hazards, and it will insist on timely recovery. Every month, more than 100 tons of lime can be recycled, equivalent to standard calcium carbide (300L/kg) 5-6t. Strictly apply calcium carbide to factory inspection to ensure the authenticity of calcium carbide quality data In order to prevent analysts from sampling seriously or cheating, a monitoring system is installed in the calcium carbide and calcium carbide analysis rooms to monitor and monitor the whole process of calcium carbide sampling and analysis to ensure analysis results. True and accurate. At the same time, inspecting the vehicles that transported calcium carbide, and once found that the unscrupulous suppliers have ash-laden behavior, they immediately provided a certain amount of ash disposal, which effectively safeguarded the interests of the company. This, to a certain extent, also warned the suppliers that they were no longer Adulteration also guarantees the benefits of the company and avoids the loss of the company.
LJ-Button Hole And Button Attach And Bar-tacking Series
Single chain stitch, Double lock stitch, High degree of automation
Zhejiang Lejiang Machine Co., Ltd. , https://www.cnlejiang.com