Name:Langfang meishangrui thermal insulation material Co., Ltd
Type:Others
Tel:+8618333688818
Fax:+860316-5795976
Email:1440418188@qq.com
Web:www.lfmeirui.com
Address:China(Mainland)
Products detail
| Product Name: | Tar demulsifier |
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| CAS No: | ||
| Product Type: | Catalysts & Chemical Agents -> Surface active agent | |
| Product spec: | MSR-1300 | |
| Packing: | Plastic bucket | |
| Post Time: | 2019-12-03 | |
| Usage: | Usage and dosage The special metering pump provided by Xingke company is directly added into the system before the circulating water pump. According to the different production process, the added amount is about 200ppm-300ppm. The added amount is adjusted at any time according to the site conditions Summary In addition to coke oven gas, ammonia and tar produced by spray condensation of coke oven gas are the two most important by-products in coking process. The economic benefits of tar can help the coking plant to make up for the cost pressure caused by gas washing Although circulating ammonia water can not bring considerable economic benefits to customers like tar, if not properly treated, it will not only affect the coking production process, but also meet the pressure of environmental protection discharge. In many ways, tar is similar to oil, and it is a decreasing resource. Modern western coking industry pays more and more attention to the five recovery coking process. In the future, there will be a market pattern of supply less than demand in the tar market. Therefore, optimizing the recovery process and recovering the tar produced by coking process as much as possible will bring considerable economic benefits to the coking plant both at present and in the future. Due to the process problems and site factors, it is limited to improve the quality of tar and ammonia water by means of increasing equipment. In foreign enterprises, the way to solve this problem is to add chemicals in the production process, improve the separation degree of tar and ammonia water, and reduce the viscosity of tar, so as to achieve the purpose of tar dehydration and reduce the tar content in ammonia water, and prevent the content of circulating ammonia water Tar content, to prevent the tar contained in the circulating ammonia water from depositing in the system equipment. Development history of technical scheme | |
| Description: | At present, there are some chemical methods to improve the quality of tar in the world, including the following two kinds, water-based technical scheme and oil-based technical scheme. Water based technical scheme The water based technology plan is to add chemicals into tar products and enter the storage tanks. Through a period of stay, the water-based agents will destroy these emulsions, separate the ammonia water from them and reflow into the system. This technology can effectively reduce the water content of tar, but it has little or no effect on improving the quality of circulating ammonia water. Oil based technical scheme This technology is to add tar viscosity reducer and demulsifier into the gas collection pipe and bridge pipe spray circuit. Through this method, not only the dehydration rate of tar can be improved, but also the quality of circulating ammonia water can be positively affected. The company''s tar dehydrating agent is also an excellent viscosity reducer. It will form a layer of film on the surface of tar, increase the fluidity of tar, and greatly reduce the cohesiveness of tar. Another factor affecting the dehydration rate of tar and the quality of circulating ammonia water is the content of quinoline insoluble substance, which is due to the formation of stable emulsion between quinoline insoluble substance and tar and ammonia water. Under normal conditions, quinoline insoluble matter will not have a significant impact on the separation of tar and ammonia, but considering the quality of tar and ammonia, it is a factor that can not be ignored. This chemical solution can reduce the problem of tar ammonia separation caused by quinoline insoluble. At present, the countries that use these chemical technologies to enhance the tar ammonia separation process are Canada, the United States, Japan, Brazil, Chile and some countries of the European Union. Especially in Japan and South America, these technologies have been used in many coking plants of large international steel companies in recent years. Strengthen the quality management of tar and ammonia water Generally speaking, the tar ammonia water system is designed with proper operation procedures and treatment equipment. If the coking process and gas cleaning process are properly operated, the quality of tar and ammonia water should be able to reduce the operation cost and recover by-products as much as possible. But in the actual operation, the quality of tar and ammonia always fluctuates, and there is some gap with the expected goal of coking plant. Eliminating or reducing these fluctuations is the key factor to strengthen the quality management of tar ammonia water. The purpose of producing high quality tar and ammonia water can be achieved by adding appropriate equipment, but this kind of investment is obviously uneconomical for coking plant. Therefore, the coking plant can only operate each process strictly according to the standard on the basis of existing equipment, so as to ensure the improvement of the final product quality as much as possible. Like any process treatment, the most important key point of tar ammonia quality management should be placed at the upstream of the process side. Only in this way, the downstream process can benefit from the improvement of these processes. Each process improvement will form a joint force, and the whole production process will benefit from this systematic improvement, so as to achieve a virtuous cycle. | |