开云游戏

Potassium sulfate is the main chlorine-free potash fertilizer in agriculture. Mannheim method is a method for preparing potassium sulfate from potassium chloride and sulfuric acid. at present, the production process is the most mature. The method has the advantages of high grade of potassium sulfate ( w ( K2O ) 50 % ~ 51 % ), little loss and high yield of potassium. So the potassium sulfate reaction furnace is also called mannheim furnace.

α - Al2O3 single crystal is also called sapphire, commonly known as corundum, is a simple coordination type oxide crystal. It is made up by proces alumina powder with purity ov 99.99 %, and its growth process is in ultra-high temp. furnace, which is called sapphire furnace according to its application, and is divide into sapphire growth furnace and sapphire annealing furnace according to its use temp., also called crystal growth furnace and crystal annealing furnace.

The factors to be considered in the heat preservation of methanol conversion furnace are furnace type, furnace temperature, heating mode and furnace atmosphere. Furnace type mainly has top burning square box type, side burning double chamber type, small cylinder type, etc.; Equipment fuel is generally natural gas plus casting gas, clean, sulfur content is not higher than 50 ppm; The radiant section is operated under micro negative pressure ( - 5 ~ - 10 mmh2o ) and the maximum design temperature of the hot surface is 1260 ℃. Weak reducing flue gas atmosphere in the furnace.

Cracking furnace is one of the key equipments in ethylene plant. the furnace type is bottom burning + side burning box heating furnace. The structure generally consists of two parts. The upper part is convection section and the lower part is radiation section. The radiation section is equipped with vertical furnace tube, is the heating reaction part of hydrocarbon, furnace tube design temperature is 1100 ℃. Cracking furnace burner is generally distributed in the bottom of the furnace and side wall parts, radiation section of the furnace temperature is generally 1260 ℃, furnace atmosphere for weak reducing atmosphere.

Flare system heat preservation: in the production of petroleum and chemical enterprises, there are some chemical devices and oil refining devices processing a large number of hydrocarbon substances, in the normal production process is inevitable to discharge a considerable amount of flammable and explosive materials or tail gas, waste gas, in order to prevent fire and explosion accidents, to ensure the safety of equipment and personnel, must be set up flare system.

Catalytic reforming is an important part of refining process, mainly to improve the quality of oil, the reaction of reforming furnace provides heat, reforming furnace has side burning square box furnace and bottom burning reformer, reformer is now mostly combined reforming, furnace tube temperature in 210 ℃ or so, furnace temperature in 900 ℃.