Tons of Potassium Sulfate Project

Overall introduction：

Production of potash sulfate project, is my company a new technology of the success of scientific research personnel development research. Is the core of this technology in Germany dry roasting, on the basis of production of potassium sulfate, improved the structure of mannheim furnace and become a new type of reactor, combined with other specialized equipment, it has successfully solved the high temperature, strong acid problem of corrosion resistant materials, as well as the continuous production technology of feeding problems. Compared with similar foreign equipment, its outstanding characteristic is less investment, short build period (4 ~ 6 months), a high degree of automation, stable operation, high thermal efficiency, strong operability, high product yield, quality and reliable, good environmental protection effect. From engineering design, equipment manufacture, installation and production technology, product testing, complete sets of technology and equipment, all have the company independently to complete, and has set up a successful for home and abroad (Indonesia, the Philippines, India, Egypt, etc.) vendors are many sets of equipment and technology transfer, has achieved good effect.

The preparation of potassium sulfate and hydrogen chloride gas generated in the reaction chamber. Its formation reaction process is as follows: indoor temperature control within the range of 510-560 ℃, the equipment is in normal operation and standby condition, according to the dosing raio of appropriate by the metering device straight into potassium chloride, sulfuric acid in the reaction bed fully blend to generate potassium sulphate and hydrogen chloride gas reaction. Of hydrogen chloride gas hydrogen chloride by continuous smoke exhauster and maintain the reaction chamber is slightly negative pressure, the finished product potassium sulfate is continuously removed from the reaction chamber into the control cooling pusher, potassium sulfate by cooling and crushing, goes further, by the air seal screw conveyor sent to the belt conveyer, add a small amount of powder after screening, crushing and after the acid into the finished product bin, metering packaging sent to potassium sulphate finished-parts storage. 

Hydrogen chloride gas cooling absorption: (1) the hydrogen chloride gas generated by the reaction chamber, outlet temperature as high as 400 degrees, the need to heat cooled to 50 ℃ or less to facilitate the preparation of sulfuric acid gas washing and hydrochloric acid, the process is carried out within the carbon cooler. Because of is contained within the hydrogen chloride gas dust sundry, to prevent carbon cooler jam, accompanied by mixed acid washing process, washing liquid from the pickling pump discharge, and hydrogen chloride gas flow back to the sulfuric acid gas scrubber, cooling water by the water distributor from bottom to top, back to back to a vase with secondary cooling. 

Since the carbon in the discharge of hydrogen chloride gas cooler with a small amount of sulfuric acid gas (mainly sulphur trioxide) and material particles. For making high quality of hydrochloric acid to sulfur trioxide and particle washing net is necessary, the process conducted in sulfuric acid gas scrubber, mixed acid absorption liquid control certain concentration, remove is sent to the mixed acid of continuous, dilute hydrochloric acid sent by the exhaust gas recycling system, after washing the hydrogen chloride gas entering the acid system. 

Hydrogen chloride gas after washing with dilute hydrochloric acid from hydrochloric acid absorber group B downstream into hydrochloric acid absorber group A complete falling film absorption process, concentrated hydrochloric acid to control concentration of hydrochloric acid tank in the middle. Not be absorbed hydrogen chloride gas into hydrochloric acid absorber of group B and add clean water upstream of the tower contact complete absorption process. Hydrogen chloride in tail gas recovery tower (1), high purity water by dilute acid tank, the metering device of continuous investment and control the right amount of water, absorbing liquid (dilute hydrochloric acid) A borrow into hydrochloric acid absorber in group A. Acid production process using four sets of parallel arrangement, due to the absorption of hydrogen chloride reaction is an exothermic process, the reaction heat must be removed before reaction of, so the hydrochloric acid absorber in group A with jacketed cooling device, cooling water from the water distributor, bottom-up to sink back into the pool, control group A tower outlet water temperature of 40 ℃ or less. Hydrochloric acid intermediate slot control a certain level, when in a timely manner after the predetermined level trough, sampling analysis of pump will be qualified with acid hydrochloric acid hydrochloric acid into the tank. 

The exhauster to homemade hydrochloric acid system exhaust by recovery tower 1-2-3-4-5 into the chimney discharged into the atmosphere. Tail gas recovery system for the five towers in series process, hydrogen chloride gas with dilute hydrochloric acid inside the packing type recovery tower countercurrent contact reaction, hydrochloric acid concentration of exhaust gas by the no. 1 -... - > 5, gradually reduce, dilute salt concentration by 5 -... Gradually increase their form concentration gradient - > 1, 5 tower add clean water tower gradually transferred to the no. 1, no. 1 tower absorption liquid quantitative transfer to sulfuric acid gas scrubber, 1 tower also accompanied by sent to hydrochloric acid tank of liquid flow in the middle. Absorb as exothermic reaction, how many each tower temperature according to the absorption of hydrogen chloride by no. 1 -... - > 5 gradually reduce, also a temperature gradient. The absorption tower for micro positive pressure, exhaust gas to the chimney discharged into the atmosphere, and to ensure exhaust emission standard in order to run. 

Potassium sulfate production process principle of the project, with sulfuric acid and potassium chloride as raw materials, reaction at high temperature, made a series of processing technology, production of main products of agricultural potassium sulfate and the by-products of industrial hydrochloric acid. By the technical supervision inspection, potassium sulfate reached GB20406-2006 product quality standard level, among them, the content of potassium hydroxide, chlorine ion content, moisture content and physical properties of various specifications are reaching or higher than similar foreign products. 31% byproduct hydrochloric acid can be adjusted according to the customer need the following products, various concentration of quality BG320-2006 standard requirements. 

Potassium sulfate contains both crops necessary potassium ion, also contain sulfur in promoting role for the growth of crops, is a kind of potassium and sulfur compound fertilizer, used for all crops, particularly applicable to avoid chlorine crops, such as tobacco, tea, sugar beet, melon, potato, peanuts, beans, vegetables and so on, can not only increase crop yield, but also can improve the quality of crop products. For example, can raise the flammability of tobacco, the sweetness of grapes and watermelon, potato starch and so on, with chlorine, phosphorus is reasonable use of 10-25% of the increase production effect can be obtained. Because of lower potassium sulfate index, use for a long time without destroying the soil structure, it will also no longer cause soil acidity and salinization. 

This project of by-product hydrochloric acid production, the quality meet or exceed the technical indicators of industrial synthesis of hydrochloric acid requirements, can be widely used in industrial boiler water electrolysis, electroplating, purification and chemical industry and so on equipment cleaning, also can be used for processing fields such as food, medicine, is one of the basic chemical raw materials, has a broad market prospect.

Economic and technical indexes:

①Technical index of agricultural potassium sulphate

Appearance：colorless or white crystals or powders

②The technical index of the industrial hydrochloric acid

③Product consumption quota

④Main technical indicators

Images of productions: