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Key words:
Flange center line butterfly valve
This valve can be used in the pipeline and equipment of corrosive media for intercepting, connecting and regulating the flow. The product is light in weight and easy to install. At the same time, the product has a fast opening and closing speed, which can effectively improve the efficiency of the work.
The tempering furnace is the nuclear device of the coal tempering unit. The combustion pressure in the tempering furnace is 4.0~6.3MPa, and the temperature is 1100~1300 ℃. It is a dangerous device. Therefore, the safety and reliability of the tempering furnace is the first, and the second is to ensure the stability of the reaction products. It is necessary to accurately control the flow of water slurry and oxygen into the tempering furnace. The reaction in the furnace is the combustion reaction of high temperature and high pressure, and the demand for oxygen. In order to ensure the normal combustion state and the safe operation of the furnace, the flow of oxygen must be accurately controlled. The furnace is equipped with 3 oxygen flow valves to control the oxygen flow into the furnace, namely, the oxygen flow regulating valve, the oxygen cut-off valve and the oxygen venting valve. Compared with the oxygen-reducing valve in the general process, the oxygen-reducing valve in the furnace needs to withstand high pressure difference, good flow rate and strict sealing level. The maximum cut-off pressure difference of the oxygen cut-off valve can reach 5.0~7.0MPa, and the leakage level needs to reach Vl level. Generally, the straight-through type 0 hard seal ball valve is selected for this type of cut-off valve.
Black water gray coal water slurry ball valve
The black water gray coal water slurry ball valve is a special type of hard seal ball valve, specially designed for the complex conditions of coal erosion. It is a special type of hard seal ball valve that can adapt to high temperature, high pressure and high temperature wear resistance. The main purpose is to solve the common problem that the valves in the coal slurry feed and water-filling art pipelines in the air-filling device cannot be opened and closed normally due to medium fouling and wear. We have developed the key valves for air-filling devices suitable for water-filling media such as coal slurry, water-filling and gray, and have improved the service life of the valves to ensure the periodic operation of the entire air-filling device. The water supply is actually the water supply containing excess carbon directly discharged from the bottom of the furnace and the washing tower. In fact, the water supply directly discharged from the bottom of the furnace and the washing tower is the water supply containing excess residual carbon directly discharged from the bottom of the furnace and the washing tower after being cleared and removed by flash treatment.
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