Chemical production, chemical equipment corrosion is a major problem. Due to corrosion, the amount of steel wasted every year (2731, 85.00, 3.21%) is huge. In China, the main reason for damage to the chemical industry equipment is due to corrosion. Therefore, many of the equipment life is only 1-2 years, the shortest only 1-2 months. Titanium equipment in the corrosion resistance, wear resistance, resistance to erosion, has a very excellent performance. Titanium equipment, although a one-time investment is high, but the service life is carbon steel, stainless steel and cast iron equipment several times, several times. As the titanium material with a small density, high strength, good corrosion resistance and other outstanding advantages, successfully resolved the chemical production equipment in the serious corrosion problems and favored, to the chemical industry anti-corrosion technology has brought a leap.
Titanium plate manufacturers
Titanium plate manufacturers understand that the chemical system is the first use of titanium in China's civilian industry, and the largest use of the industrial sector. Nearly 10 years, China's chemical industry with titanium equivalent to 2009 and 2010 two years of titanium production and the sum. Table lists the scope of China's chemical industry in the proportion of titanium titanium in the chemical industry applications, the current titanium in the chemical industry's main application areas:
Inorganic salt industry
Inorganic salts mainly include chlorate and potassium salts. Domestic sodium chlorate production in the past two years has developed rapidly, the total production capacity of more than 1 million t, and about 500,000 t in the expansion or early work. Chlorate titanium equipment mainly electrolytic cell, titanium anode, reaction generator , Evaporator, etc., per million t sodium chlorate probably need to use titanium 15t.
Potassium salt products include potassium chloride, potassium sulfate, potassium nitrate, potassium carbonate, etc. At present, the total production capacity of potassium nitrate and potassium carbonate in China is about 600,000 t. Evaporators, preheat tanks and coolers in the production of potassium nitrate and potassium carbonate require the use of titanium equipment.
2. Chlor-alkali industry
Titanium in the chemical industry's earliest, the largest users are chlor-alkali industry. Including the production of chlorine, chlorine oxides, pesticides, drifting powder, etc., in the production of chlorine, titanium equipment and piping almost accounted for a quarter of its total mass'. Such as for metal anodic cell, ion membrane electrolyzer and anolyte pump, tube-type wet chlorine cooler, chlorine wastewater dechlorination tower, chlorine cooling scrubber, refined brine preheater, vacuum dechlorination pumps and valves.
3. Fine chemical industry
Propylene oxide plant industrial raw materials are strong corrosive media. The two main raw materials used in the PO production are liquid chlorine and propylene. These strong corrosive media have laid the foundation for the corrosion of the PO equipment pipeline, which is produced under such process conditions such as carbon steel, Al, Cu, Ni, stainless steel And other metals are unable to resist corrosion, only titanium is the ideal anti-corrosion metal materials.
4. Soda ash industry
In the production of soda ash, titanium is mainly used for crystal external cooler, distillation tower top ammonia condenser, ammonium chloride mother liquor heater, plate heat exchanger, umbrella plate heat exchanger, carbonization tower cooling tube, carbon dioxide turbine compressor Rotor impeller, alkaline pump and so on.
At present, regardless of the introduction from abroad, or domestic design and manufacture of polyester, nylon, vinylon and other petrochemical enterprises have used some titanium equipment. Titanium equipment application has played a positive role in the development of China's chemical fiber production, especially for safe and stable production, to improve product quality, to prevent premature corrosion failure of stainless steel, improve equipment life, reduce parking and maintenance, improve comprehensive economic benefits A significant contribution.
6. Vacuum salt industry
Titanium ammonia evaporator, titanium preheater, titanium pre-cooler, titanium flange, titanium tube plate, titanium pump shell and titanium elbow.
7. Other industries
Titanium Dioxide Titanium for thin film concentrator, calcined kiln feed tube, centrifuge distribution plate and so on.
Urea Titanium for urea synthesis tower lining, ammonia stripper, general decomposition tower heater, methylamine pump inlet and outlet valves and springs, high pressure mixers and so on.
Dye Titanium for the coil heat exchanger, absorption tower, purification tower nozzle, fan, water ring vacuum pump, filter and so on.
Titanium nitrate for nitric acid evaporator, nitric oxide exhaust preheater, nitric acid steam preheater, gas scrubber, quick cooler, condenser, turbine blower, pump, valves, pipes and so on.
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