63results about How to "Meet concentration requirements" patented technology

The invention discloses a method for preparing potassium chloride by utilizing potassium mixed salt. The method comprises the steps that a reverse flotation process is adopted to remove sodium chloride in the potassium mixed salt, and a tailing is obtained; the tailing is dissolved in water, and solid-liquid separation is performed to obtain a tailing solution; a section of nanofiltration step is executed, wherein a nanofiltration membrane system is adopted to conduct a section of nanofiltration treatment on the tailing solution to obtain a section of concentrated water and a section of produced water and comprises a first nanofiltration membrane module and a first concentrated water tank and a first produced water tank connected to the first nanofiltration membrane module, the section of concentrated water is stored in the first concentrated water tank, and the section of produced water is stored in the first produced water tank; evaporative crystallization is conducted on the section of produced water to obtain the potassium chloride. The invention provides a novel method for producing potassium chloride by using potassium mixed salt as a raw material. The method has the advantages of being simple in process, high in product purity and high in yield.

The invention relates to a power improved diaphragm type carburetor. The power improved diaphragm type carburetor comprises a carburetor body, and the upper part of the carburetor body is internally provided with an air inlet passage penetrating the carburetor body; the air inlet passage is internally provided with a choke valve device which can rotate to adjust the air inlet amount, a throat pipe used for accelerating the air flowing speed and a throttle valve device which can rotate to adjust the mixed air amount in the direction of air inlet in sequence; the lower side surface of the carburetor body is provided with a fuel injection cavity for storing fuel, and the carburetor body is internally provided with a fuel injection channel which facilitates fuel in the fuel injection cavity to be injected into the air inlet passage; and the lower part of the carburetor body is provided with a negative pressure regulating device used for controlling the oil tank to feedthe fuel into the oil injection cavity, and the negative pressure regulating device is arranged below the fuel injection cavity. The power improved diaphragm type carburetor adopts the horizontally-arranged negative pressure regulating device, so that a negative pressure elastic membrane is uniformly covered by fuel, severe local damaging caused by different oil corrosion degree of the negative pressure elastic membrane is prevented, and the fact that the problem of poor oil supply quality of the carburetor is generated due to changing of the physical property when the negative pressure elastic membrane is deformed is avoided.

The invention relates to a method for preparing high-strength sulphoaluminate cement and co-producing sulfuric acid. The method comprises the following steps of adopting phosphogypsum for completely replacing limestone and natural gypsum, milling and homogenizing the phosphogypsum, bauxite, steel scoria, silica and pulverized anthracite, and then calcinating the milled and homogenized raw materials at a temperature of 1250-1300 DEG C. The method is capable of greatly improving the phosphogypsum utilization ratio, and high-concentration sulfur dioxide tail gas can be adsorbed to prepare sulfuric acid. The prepared sulphoaluminate cement clinker is high in hardening rate, high in early-stage strength, and stable in later-stage strength increase; performance tests indicate that the mechanical strength of the sulphoaluminate cement prepared by the method conforms to the rapid-hardening sulphoaluminate cement standard.

The invention relates to a method for producing and synthetizing ammonia and methyl alcohol raw material gas by virtue of fixed bed intermittence type oxygenation nature gas, and the method is characterized by improving the concentration of oxygen in charged air of the traditional fixed bed intermittence gasification process to 22-65%. By utilizing the method, the defects of low blowing efficiency, low single-furnace output, high coal consumption, serious environment pollution, unstable oxygen enrichment continuous gasification operation, high gas carbon dioxide and methane and the like of the traditional intermittence gasification process are overcome, and the advantages of high enrichment continuous gasification gas production rate and low coal consumption are carried on, two gasification process advantages are innovatively integrated, and the purpose of playing up strengths and avoiding weaknesses is realized.