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2 Abstract This article outlines the technical transformation and benefits of the submerged pump in our plant and asphalt production plant.
Heilongjiang Heihua Group Co., Ltd. has a coking plant that processes 310,000 coal tars per year. The high temperature bitumen produced has been exported to Russia since 1996, and Russia has been dissatisfied with this indicator of high temperature asphalt toluene insolubles after use. Because my company's insoluble matter is between 18 and 20, it cannot meet the requirements for aluminum production. Therefore, we have added a new set of modified leaching device, that is, the medium-temperature fatty blue is used as the raw material to conduct thermal polymerization in the reactor to form modified asphalt. The modified bitumen flows into the middle tank and is converted back to the middle tank with the condensate of the flash vapor of the top of the kettle to adjust its softening point. With the submerged pump, the modified asphalt in the middle tank is periodically sent to the high temperature tank for cooling and loading. The modified bitumen installation was completed and put into operation in June 1997. During this period, the submerged pump often suffered from faults and the current was too large to shaft lock the shaft, causing the pipeline to be coked and the reformed asphalt production was interrupted. If it is not resolved as soon as possible, the Russian market will be unable to stand firm and foreign exchange earned through exports will be empty talk.
1 The technical transformation of the submerged pump The reason why the submerged pump can not be operated can be summarized as follows: 1Axis bore wear serious 2The clearance between the sleeve and the pump shaft is too small; The clearance between the impeller end face and the pump head is too small; 0 pump Shaft rotation between shafts. For the above reasons, we have modified the pump as follows: The overall size of the pump is shortened, and the pump shaft is thickened. 0 The pump is shortened to 46. The pump shaft is changed from 035 to 045. The modified asphalt has a large viscosity and the pump flow is large. The pump shaft is thin and the pump is long. It is prone to vibration. Changing the pump shaft to thick and short avoids the above drawbacks and enhances the structural stability.
The bearing adds a cooling water jacket to lower the bearing temperature to prevent the shaft from locking the shaft.
Lubricate the shaft sleeve at the pump head, and guide the short bore from the outlet pipe of the pump. Lubricate with modified asphalt.
The original 3078209 bearing was changed to 7309 tapered roller bearing.
After the reformed submerged pump, the test run effect is always good. The original submerged pump can only run 3 modified liquids. So far, the liquid has never been affected by the submerged pump vacuum and the liquid has been changed. After the technical transformation of the lower spring, the operating mode has also been changed accordingly, from the original continuous operation to intermittent operation. For each processing period calculated according to 25 days, 2524=600 should be run for each processing period in continuous operation; intermittent operation is to be run 34 times per day, each operation is 0.5 0.5% for each processing period. 5 Because the intermittent operation is more continuous than the operation of the pump The time is greatly shortened and the life of the pump is correspondingly extended.
After the transformation, the submerged pump is lubricated by the bushing at the pump head. Therefore, the level of the modified asphalt intermediate tank is maintained at a height of 4550 between the heights of the middle tanks to prevent the friction between the shaft and the shaft sleeves from generating friction and generate heat. Expansion will lock the shaft. In order to avoid the level below the pump head, the instrument control has taken the form of an obvious combination of the local display and the control room, effectively eliminating the dry friction phenomenon of the submerged pump.
4 Economic Benefits After the transformation of the equipment and operation, the submerged pump meets the requirements for modified asphalt production. In order to ensure the normal production of modified asphalt in winter, in addition to strengthening the operation, we used a heat-retaining cock for the switching valve, so that the modified asphalt smoothly passed through the winter production. After the modified bitumen was exported to Russia, the users were very satisfied and the products were continuously sent to Russia. From 997 to 6 this year, nearly 40,000 tons of asphalt have been exported to increase sales revenue. 20,000 yuan, foreign exchange earning 20,000 US dollars.
The improved method is to remove the base of the reserving chamber observation hole, remove the regenerator chamber seal wall, and remove the insulating layer of diatomaceous earth insulation brick. Remove the checker bricks layer by layer until the clean checkered bricks are exposed. Lay thin iron plates on the bricks to prevent them from jamming the block bricks, and use long solders to clear the chutes. At the same time, the fire adjusters will use long brazing tools to clear the fire from the standing fire. After observing and confirming the dredge, remove the pieces that fell on the iron plate during the dredging. Take out the thin iron plate, put it back to the checkered brick, and get on the insulation and the wall.
2 Advantages After the implementation of the chute method from the regenerator, it is like increasing production and income, such as processing 2 fire channels. When processing from the carbonization chamber, the North Eye adds 3 buckets of coal, and the carbonization chamber will reduce the amount of coal 4 and produce less coke 3 gas products. The rate is calculated as 32,3 per ton of dry gas, and the gas production is 432,=128,3. In the process of carbonization chamber, the gas produced in the carbonization chamber is 41! All of them were discharged, and the amount of discharged gas was 320, 14424 = 747. From this, it can be seen that burying 2 fire recovery ratios from the hot chambers produced more coke in the carbonization chamber. 3 Saved gas 2027 Reduced consumption in the carbonization chamber Road, island temperature operation, personally cooperate with each other to complete, easy to burn labor protection supplies, but in the heat storage house processing is a low temperature operation, this can be about set of labor protection supplies.
To protect the furnace body in the carbonization chamber, it is necessary to make a hole in the wall of the carbonization chamber to destroy the masonry, and the carbonization chamber has a long open time, which is very unfavorable for the coke oven. Treatment in the regenerator does not break the body, while reducing the number of times the coke oven is quenched and heated, and the extension of the coke is continued. With the improvement of equipment and operation, it is ensured that the modified contribution. There are only a few manufacturers in China that have improved their quality of production. The coke plant of Shijiazhuang Coking Co., Ltd. in Xuangang Coking Plant in Shijiazhuang Co. I plant in the same type of manufacturers in the first half of the product quality, for the production of the same type of related products, manufacturers have accumulated equipment and operating furnace life is undoubtedly beneficial.
3Economically efficient coking plant In 1998, the treatment ramps were treated 43 times in the regenerators. The economic benefits were calculated as labor protection supplies = 433 = 129 sets, labor protection products with a medium price of 800 children, and coal price of 300 yuan per 1 wet coal; Hot chamber treatment can be more profitable than carbonization and burying methods. 4 Conclusion (1) The use of regenerators in coke ovens to treat the ramps will not affect the regular production of ovens and product output.
The heat storage station slops the warehouse to benefit from Yanmin furnace Mu.
The use of a heat storage crucible for the treatment of ramps is technically feasible and feasible.
Receipt period december 10, 1999 Cui Yuling Heihua Group Coking Plant Engineer Heilongjiang Fulaerji Chen Yuling Heiner Group Corporation Technical Office Engineer Heilongjiang Fulaerji Postal Code 164 The province's blank.
Received date December 1999 Chen Yuling Yuan Kecheng Engineer, Technical Department, Heihua Group, Fulaerji, Heilongjiang Province, China 164 Cui Yuling, Heihua Group, Coking Plant, Industrial Engineer, Fualer, Heilongjiang Province
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