How far is the road from scientific research to social wealth (2)
The technical value of the "slurry method": gold is always shining in the furnace of practice.
The core innovations and accompanying technical achievements describing the “slurry method†are boring in the eyes of amateurs, but in the eyes of the entrepreneurs who plan to build an ammonium phosphate project, they are shining with wisdom and gold, and they are constantly In the promotion and application of more brilliant. The reporter recently encountered a manager who is still planning an ammonium phosphate project. When a reporter asks him what technology to use, the boss blurted out: "Of course it is the masterpiece of Chuanda Big Ben and the teacher!"
The “slurry method†ammonium phosphate process is a new process for the production of ammonium phosphate that is independently developed by the Chinese according to the characteristics of domestic phosphate resources. It has a series of advantages such as strong adaptability to phosphorus ore, high energy utilization, low equipment material requirements, and complete localization of equipment.
- Neutralizing slurry concentration is a key innovation in this process, and it is also the core of the traditional process that distinguishes it from phosphoric acid concentration. It not only solves the problem that the traditional process can not produce ammonium phosphate with medium or low grade phosphorus ore with high impurity content, but also reduces the corrosivity of the material concentration process. Driven by this core technology, the production technology of the "slurry law" supporting link has continued to develop and improve over more than 20 years. Has made great technical achievements.
——Developed a “comprehensive enhanced heat balance technology†during the extraction reaction of dihydrate wet-process phosphoric acid production. Combined with the characteristics of the slurry process, the reaction temperature was increased to above 90 degrees Celsius to form a high-temperature dihydrate extraction process and improve production. effectiveness.
——Based on the basic research on the basic crystallization properties of calcium sulfate in the reaction material, a filter aid was developed to improve the liquid-solid separation and filtration strength of the acid-resolved slurry, so that the main contradiction in the production of wet-process phosphoric acid from low-quality phosphate rock was alleviated.
- Adopt a small-cycle approach to treat phosphoric acid wastewater, eliminate pollution, and increase phosphorus recovery.
——In the process of neutralizing dilute ammonium phosphate, new high-efficiency reactor technologies such as "external circulation rapid ammoniation reactor", "neutralization and concentration integration" and "dilute acid tubular reactor" have been developed.
——In the process of granulation and drying of concentrated slurries, the industrialization of the main process of “spray granulation and drying granulated ammonium phosphate†was first completed, and the internal crushing technology within the internal screening of returned materials was successfully developed. In addition, it also optimized, amplified and enhanced the drying process of "Pressure spray bed-type counter-flow drying powdery ammonium phosphate."
——Utilizing the special advantages of the new reactor, combined with the development of low-cost organic nitrogen-fixing agents, a high-quality, low-consumption “dimer organic phosphoric acid diammonium†process has been developed. With this process, all ammonium phosphate products can be produced.
......
Following the first prize of the National Science and Technology Progress Award in 1988, the "Slurry Law" process and its industrialized production equipment passed these improvements. In 1995, it was awarded the first prize for scientific and technological progress by the Ministry of Chemical Industry and the Ministry of Education was vacant in 1999. Years of Science and Technology Progress Grand Prize. Slurry ammonium phosphate large-scale localization device won the 2004 National Science and Technology Progress Award.
The secret of the "slurry law" success: the business is handed down to help scholars to create social wealth in the process of the development of the phosphate industry, Sichuan University's "slurry law" is a well-known name. Professor Zhong Benhe is also an active figure in the innovation technology seminar of the phosphate fertilizer industry. The Phosphate Fertilizer Industry Association and many companies have highly affirmed and personally felt the value created by the "slurry law." In this regard, Professor Chung described this: If there is not one, another phosphate fertilizer company and the participation, support, and practice of competent authorities at all levels, the "slurry law" will never have today's achievements and situations. It can be said that the secret of the "slurry law" lies in the fact that countless companies are continuously applying this technology to production practice. With the participation of enterprises, research results can be transformed into real social wealth.
The earliest advent of the "slurry method" was in the early 1980s when a small phosphate fertilizer company in Sichuan Province, Yinshan Phosphate Fertilizer Plant cooperated with Sichuan University and other units. It first built a 30,000-ton/year production facility.
During the “Seventh Five-Year Plan†period, the country identified it as the main process route for the upgrading and upgrading of small phosphate fertilizer companies throughout the country, and promoted the construction of 78 sets of 30,000 to 60,000 tons/year scale production facilities in 21 provinces and districts. Annual production capacity reached 2.43 million tons.
In June 2003, the state proposed further improvement of the five major phosphate fertilizer projects in Huangmailing of Hubei Province, Luzhai of Guangxi Province, Koufu of Guizhou Province, Dahuang Phosphorus of Yunnan Province and Dagukou of Hubei Province. Subsequently, Sichuan University reported to the Ministry of Education that it would adopt the “slurry method†process to improve the five major phosphate fertilizer projects. They analyzed the problems existing in the introduction of traditional production equipment, and innovatively proposed a new way of thinking that combined the traditional method with the "slurry method" to achieve co-production.
This idea was strongly supported by Guizhou Hongfu Co., Ltd., and the two parties cooperated first to build a 200,000-ton/year co-production facility for monoammonium phosphate, and then built another unit of 240,000 tons/year. It is estimated that for every 1 ton of monoammonium phosphate produced, the processing fee is only 80 yuan. Subsequently, Hubei Dagukou, Yunnan Furui (Phoenix Yunnan) and Luzhai, Guangxi also utilized the technology of diammonium phosphate and the “slurry method†to produce monoammonium phosphate.
In 2005, Sinochem Chongqing Fuling Chemical Industry Co., Ltd. expanded its original 30,000-ton/year “slurry method†production facility to 300,000 tons/year, and the product investment was less than 200 yuan. In 2006, the company also set up a new 300,000-ton/year installation. The company's "slurry process" has reached a production capacity of 600,000 tons/year.
The combination of theory and practice is the dream of non-mathematicians and countless entrepreneurs. This dream was successfully implemented by the "slurry law" for 27 years in the history of the development of the phosphate fertilizer industry.
The core innovations and accompanying technical achievements describing the “slurry method†are boring in the eyes of amateurs, but in the eyes of the entrepreneurs who plan to build an ammonium phosphate project, they are shining with wisdom and gold, and they are constantly In the promotion and application of more brilliant. The reporter recently encountered a manager who is still planning an ammonium phosphate project. When a reporter asks him what technology to use, the boss blurted out: "Of course it is the masterpiece of Chuanda Big Ben and the teacher!"
The “slurry method†ammonium phosphate process is a new process for the production of ammonium phosphate that is independently developed by the Chinese according to the characteristics of domestic phosphate resources. It has a series of advantages such as strong adaptability to phosphorus ore, high energy utilization, low equipment material requirements, and complete localization of equipment.
- Neutralizing slurry concentration is a key innovation in this process, and it is also the core of the traditional process that distinguishes it from phosphoric acid concentration. It not only solves the problem that the traditional process can not produce ammonium phosphate with medium or low grade phosphorus ore with high impurity content, but also reduces the corrosivity of the material concentration process. Driven by this core technology, the production technology of the "slurry law" supporting link has continued to develop and improve over more than 20 years. Has made great technical achievements.
——Developed a “comprehensive enhanced heat balance technology†during the extraction reaction of dihydrate wet-process phosphoric acid production. Combined with the characteristics of the slurry process, the reaction temperature was increased to above 90 degrees Celsius to form a high-temperature dihydrate extraction process and improve production. effectiveness.
——Based on the basic research on the basic crystallization properties of calcium sulfate in the reaction material, a filter aid was developed to improve the liquid-solid separation and filtration strength of the acid-resolved slurry, so that the main contradiction in the production of wet-process phosphoric acid from low-quality phosphate rock was alleviated.
- Adopt a small-cycle approach to treat phosphoric acid wastewater, eliminate pollution, and increase phosphorus recovery.
——In the process of neutralizing dilute ammonium phosphate, new high-efficiency reactor technologies such as "external circulation rapid ammoniation reactor", "neutralization and concentration integration" and "dilute acid tubular reactor" have been developed.
——In the process of granulation and drying of concentrated slurries, the industrialization of the main process of “spray granulation and drying granulated ammonium phosphate†was first completed, and the internal crushing technology within the internal screening of returned materials was successfully developed. In addition, it also optimized, amplified and enhanced the drying process of "Pressure spray bed-type counter-flow drying powdery ammonium phosphate."
——Utilizing the special advantages of the new reactor, combined with the development of low-cost organic nitrogen-fixing agents, a high-quality, low-consumption “dimer organic phosphoric acid diammonium†process has been developed. With this process, all ammonium phosphate products can be produced.
......
Following the first prize of the National Science and Technology Progress Award in 1988, the "Slurry Law" process and its industrialized production equipment passed these improvements. In 1995, it was awarded the first prize for scientific and technological progress by the Ministry of Chemical Industry and the Ministry of Education was vacant in 1999. Years of Science and Technology Progress Grand Prize. Slurry ammonium phosphate large-scale localization device won the 2004 National Science and Technology Progress Award.
The secret of the "slurry law" success: the business is handed down to help scholars to create social wealth in the process of the development of the phosphate industry, Sichuan University's "slurry law" is a well-known name. Professor Zhong Benhe is also an active figure in the innovation technology seminar of the phosphate fertilizer industry. The Phosphate Fertilizer Industry Association and many companies have highly affirmed and personally felt the value created by the "slurry law." In this regard, Professor Chung described this: If there is not one, another phosphate fertilizer company and the participation, support, and practice of competent authorities at all levels, the "slurry law" will never have today's achievements and situations. It can be said that the secret of the "slurry law" lies in the fact that countless companies are continuously applying this technology to production practice. With the participation of enterprises, research results can be transformed into real social wealth.
The earliest advent of the "slurry method" was in the early 1980s when a small phosphate fertilizer company in Sichuan Province, Yinshan Phosphate Fertilizer Plant cooperated with Sichuan University and other units. It first built a 30,000-ton/year production facility.
During the “Seventh Five-Year Plan†period, the country identified it as the main process route for the upgrading and upgrading of small phosphate fertilizer companies throughout the country, and promoted the construction of 78 sets of 30,000 to 60,000 tons/year scale production facilities in 21 provinces and districts. Annual production capacity reached 2.43 million tons.
In June 2003, the state proposed further improvement of the five major phosphate fertilizer projects in Huangmailing of Hubei Province, Luzhai of Guangxi Province, Koufu of Guizhou Province, Dahuang Phosphorus of Yunnan Province and Dagukou of Hubei Province. Subsequently, Sichuan University reported to the Ministry of Education that it would adopt the “slurry method†process to improve the five major phosphate fertilizer projects. They analyzed the problems existing in the introduction of traditional production equipment, and innovatively proposed a new way of thinking that combined the traditional method with the "slurry method" to achieve co-production.
This idea was strongly supported by Guizhou Hongfu Co., Ltd., and the two parties cooperated first to build a 200,000-ton/year co-production facility for monoammonium phosphate, and then built another unit of 240,000 tons/year. It is estimated that for every 1 ton of monoammonium phosphate produced, the processing fee is only 80 yuan. Subsequently, Hubei Dagukou, Yunnan Furui (Phoenix Yunnan) and Luzhai, Guangxi also utilized the technology of diammonium phosphate and the “slurry method†to produce monoammonium phosphate.
In 2005, Sinochem Chongqing Fuling Chemical Industry Co., Ltd. expanded its original 30,000-ton/year “slurry method†production facility to 300,000 tons/year, and the product investment was less than 200 yuan. In 2006, the company also set up a new 300,000-ton/year installation. The company's "slurry process" has reached a production capacity of 600,000 tons/year.
The combination of theory and practice is the dream of non-mathematicians and countless entrepreneurs. This dream was successfully implemented by the "slurry law" for 27 years in the history of the development of the phosphate fertilizer industry.
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