the supply of calcium carbide through stable production of medicines

With the in-depth development of "100-day safety" activities, Jinyuan Chemical Industry in Beiyuan, Shaanxi Province, with stable production and efficiency as the general tone, controls safety, strengthens the foundation, raises production, and launches a "rush march" closely following the annual work objectives. In October, calcium carbide38894 tons were produced, 105.7% of the monthly plan was completed, and 99.70% of the products were qualified. Various operational indicators, including output, have reached the best level in history. Since the second quarter, Jinyuan Chemical Industry Co., Ltd. of Shaanxi Beiyuan Chemical Industry Group Co., Ltd. has been working closely around the main line of "safety is the sky, unity, stability is the main task, and key breakthroughs". It has been working steadily from top to bottom, solving many problems in equipment, technology and operation, and resolutely doing a good job in stabilizing and stabilizing production of calcium carbide furnace. Steady operation will lay a solid foundation for increasing production and profit.

Eliminate repairing "stable" equipment. Frequent maintenance of electric furnace has become a difficulty in equipment management. A series of problems, such as leakage of rubber hose, pricking of electrodes, blockage of purification and excessive hydrogen, have become obstacles to the operation of electric furnaces, resulting in frequent occurrence of "non-stop". For some time, the calcium carbide furnace seems to be an unmaneuverable device. From company leaders to technicians and DCS operators, they all spend their time in anxiety, confusion and helplessness. Later, the company found that the quality of inspection and maintenance and regular maintenance are the decisive factors for the stable operation of the electric furnace. Since the operation of the calcium carbide furnace, the company has been in the state of simultaneous production and infrastructure, with fewer maintenance personnel and poor quality of maintenance, as well as frequent replacement of technical personnel and inconsistent management, resulting in the maintenance of the furnace can not keep up with the maintenance work, and the maintenance quality of the furnace can not be guaranteed. Since June, the company has required the participation of furnace technicians in all furnace inspection and maintenance projects and supervised their completion. If the electric furnace technicians are present for repairs, the electric furnace technicians shall take full responsibility for the repairs, and shall be responsible for the repair section according to the circumstances, so as to minimize the repairs from the level of management responsibility. In terms of equipment maintenance, maintenance personnel are required to stop "flow operation" (in turn in each furnace) and ensure the normal operation of equipment. The inspection and maintenance personnel will be assigned to each section in the form of teams, and the maintenance work of each section will be carried out, so that the equipment can be maintained by a dedicated person.

Material control "stable" process. It is well known that the quality of raw materials will directly affect the operation of calcium carbide furnace. Especially, the water content of orchid charcoal and the over-burning index of white ash determine the smelting time and the reaction degree of raw materials, and determine the consumption and product quality. In order to further stabilize the furnace condition, effectively reduce the process power consumption and reduce the non-stop caused by hydrogen exceeding the standard, the company has made great efforts to solve the problem of raw material quality. On the one hand, it strictly controls the index of limestone and raw coal entering the plant, stabilizes the production of white ash and blue charcoal, and improves the quality of self-supporting raw materials. On the other hand, technical research teams should be set up to strengthen the control of the production process of white ash and blue charcoal, and greatly reduce the over-burning of white ash and the moisture index of blue charcoal by means of internal force and external force. In September, breakthroughs were made in the control of grey over-burning index. The average value of grey over-burning in screening building was 9.76%, which was lower than the requirement of electric furnace smelting for grey over-burning index. This breakthrough reduced the power consumption of calcium carbide process in September by 125.81 degrees/ton compared with August, effectively reducing the production cost of calcium carbide. In addition, the operation of the new drying kiln will solve the barrier that the orchid charcoal drying can not keep up with, at the same time, will control the moisture content of the orchid charcoal drying within 1%, thoroughly solve the problem of hydrogen content exceeding the standard, and promote the long-term smooth operation of the calcium carbide furnace.

The basis of high production is stable production, that is, to effectively improve the operation rate of electric furnace. The normal temperature of calcium carbide furnace is between 1800 and 2200 C. During frequent start-up and shutdown, the furnace temperature loses a lot and there is no recharge, which makes the temperature after start-up unable to meet the smelting conditions, not only unable to produce calcium carbide, but also may cause unstable furnace pressure, electrode pressure can not go down, clipping raw materials and other phenomena. Moreover, if the furnace is shut down for a long time and the electrodes need to be roasted again after the start-up, the output of calcium carbide will be affected and the consumption of calcium carbide will be increased. For this reason, the company lays a solid foundation in the process management, and pays close attention to index management and unified operation. One is to establish the management and control concept of "abnormal indicators are accidents", requiring furnace operators to strictly implement various process indicators, clearly stipulating that DCS operators have the right not to implement the requirements of the monitor and technicians in violation of the rules and regulations, and eliminating the operation beyond the indicators. The second is to strictly control the routine operation time and times in the operation process. Material surface treatment requires solid material surface and no dead corner is left in the operation. After a period of implementation, a good result of 99.96% single furnace operation rate and 7740 tons output was created in August, which laid a foundation for further stable and over-production and accumulated valuable operation experience.

Following the successive overproduction in the first five months of this year, Jinyuan Chemical Company overfulfilled its monthly calcium carbide production plan in August and September. In September, Jinyuan Chemical Company achieved breakthrough business results, which indicated that Jinyuan Chemical Company would shed its old image and face of "loneliness" and show a new attitude of "striving to catch up with it". Elephant. The dawn is now and we should take advantage of it. On the way forward, we will practice more "dare not think" and realize more "impossible". The system has its own industrial chain. There are many factors affecting the production of calcium carbide, such as raw materials, process, equipment and operation. All of these are guaranteed by an orderly production organization. First, division of labor and cooperation, highlighting the hierarchical management. The chief engineer of the company is in charge of the production of calcium carbide and coordinates the solution of safety problems.