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DEAR air separation is used for multiple sets of equipment in the chemical industry. This solution uses molecular sieve adsorption and full-pressure low-pressure process technology for turboexpander refrigeration. After removing the mechanical impurities such as dust in the air filter, the raw air enters the air turbine compressor, then enters the air cooling tower to exchange heat with water, and then enters the molecular sieve adsorber. Part of the gas is drawn from the middle of the main heat exchanger, enters the expander, and the expanded air enters the upper tower. After the air enters the main heat exchanger, it is cooled to the saturation temperature by the return gas and enters the lower tower with a small amount of liquid. After the air is initially rectified by the lower tower, an oxygen-enriched liquid air is obtained in the lower tower. After the liquid air is cooled by the cooler, it is throttled into the upper tower. After the upper tower is further rectified, oxygen with a purity of 99.6% is obtained at the bottom of the upper tower. The oxygen of this product is reheated by the main heat exchanger and then sent out to the user after being discharged from the cold box. 99.999% nitrogen is obtained from the top of the upper tower, and it is returned to the cold box after being reheated by the cooler and the main heat exchanger. The polluted nitrogen is led out from the top of the upper tower, reheated by the cooler and the main heat exchanger, and then exits the cold box. After being heated by the regeneration heater, it is used as the molecular sieve regeneration gas and the excess gas is vented. The argon fraction extracted from the upper and lower part of the upper column enters the bottom of the crude argon column 1, and the rising steam is extracted from the top of the crude argon column 1 into the bottom of the crude argon column 2. After rectification of the two columns, the Crude argon, most of the crude argon enters the condenser of the crude argon column, is condensed into liquid by the liquid space, and is refluxed to the crude argon column as the reflux liquid of the crude argon column. The liquid returned to the crude argon column 2 is sent to the top of the crude argon column 1 after being pressurized by a liquid argon pump. After the crude argon column 1 is rectified, the liquid fraction returns to the upper column from the bottom, and part of the crude argon enters the argon argon column. After the rectification of the argon column, the required pure argon can be obtained at the bottom of the argon column.
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Process flow chart of Chemical industry solutions
Process flow chart of Chemical industry solutions
Large air separation plant KDON (Ar)-18000/36000-600 solution for chemical industry
Chemical industry has the characteristics of large scale, long industrial chain and so on. It is the basic industry and an important part of Chinese national economy. In recent years, environmental protection has been paid more and more attention, and the green development of chemical industry is also very important. In addition, the chemical industry in the industrial integration, scientific and technological innovation is also in constant efforts to advance. DEAR air separation helps the chemical industry to transform and upgrade to be environmental-friendly. DEAR’s large-scale air separation plant KDON (Ar) - 18000 / 36000-600 can use ultra-low pressure discharge energy-saving air separation technology patent, which can reduce the energy consumption of equipment operation by 5% - 15% and save a lot of production costs.
Large complete air separation plant KDON(Ar)- 30000/70000-900 solution for chemical industry
DEAR air separation has provided many sets of air separation plant for chemical industry for many years, with rich experience and the safe and stable unit operation. This unit adopts molecular sieve purification, booster turbine expander to supply the cooling capacity of the unit, and the whole rectification hydrogen-free argon production process. The rapid growth of enterprises in the industry is accompanied by the demand for production and the demand for air separation plant. DEAR air separation has cooperated with customers in the large-scale complete set of air separation plant KDON (AR) - 36000/70000-1200 project, which provides customers air separation plant with mature technology, reliable and convenient operation, and energy saving intelligence, which improves the production efficiency of customers, saving the operation cost and creates greater economic benefits.
Large complete air separation plant KDON(Ar)- 36000/70000-1200 solution for chemical industry
DEAR air separation has provided many sets of air separation plant for chemical industry for many years, with rich experience and the safe and stable unit operation. This unit adopts molecular sieve purification, booster turbine expander to supply the cooling capacity of the unit, and the whole rectification hydrogen-free argon production process. The rapid growth of enterprises in the industry is accompanied by the demand for production and the demand for air separation plant. DEAR air separation has cooperated with customers in the large-scale complete set of air separation plant KDON (AR) - 36000/70000-1200 project, which has meet the capacity demand and safety demand of the enterprise.
Large complete air separation plant KDON(Ar)-13000/22000-350 solution for chemical industry
DEAR air separation has provided many sets of air separation plant for chemical industry for many years, with rich experience and the safe and stable unit operation. This unit adopts molecular sieve purification, booster turbine expander to supply the cooling capacity of the unit, and the whole rectification hydrogen-free argon production process. The rapid growth of enterprises in the industry is accompanied by the demand for production and the demand for air separation plant. DEAR air separation has cooperated with customers in the large-scale complete set of air separation plant KDON (AR) - 13000 / 22000-350 project, which has meet the capacity demand and safety demand of the enterprise.
Type 2200 solution for small and medium-sized complete air separation plant in chemical industry
In the field of modern coal chemical industry, the air separation plant mainly provides oxygen and nitrogen. Oxygen is mainly used as gasification agent and reaction raw material, while nitrogen of different pressure levels is used as raw material nitrogen, inertia protective gas, pneumatic conveying gas and purging gas. In the past, air, oxygen-enriched or low-pressure pure oxygen were basically used as gasification agent in the domestic coal chemical industry, and the gasification efficiency, carbon conversion rate and gasification furnace capacity were all very low
3600 solution for type 2000/2000 small air separation plant in chemical industry
In other fields of chemical industry, the demand for air separation plant is stable. In response to the production demand of customers, both parties cooperate on the 2000/3600 type project of small air separation plant, it can solve the problems of customer's raw material pretreatment, delayed coking unit and comprehensive utilization.
Type 13000/22000-350 solution for medium-sized complete air separation plant in chemical industry
In the chemical industry, the demand for air separation plant is stable. The high demand for air separation plant in modern coal chemical industry may drive the demand for large and super-large air separation plant. The 13000/22000-350 type air separation plant produced by DEAR air separation starts smoothly, all indicators reach the monitoring standard and begin to supply gas for customers. Relying on excellent products and high-quality service, DEAR air separation has received high praise from customers.
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