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A method and device for producing sodium pyrophosphate by constant temperature calcination of glyphosate mother liquor

A technology of glyphosate mother liquor and sodium pyrophosphate, which is applied in combustion methods, chemical instruments and methods, phosphorus compounds, etc., can solve the problems that plague pesticide enterprises in production, survival, limited biochemical treatment capacity, and lack of waste water, etc., and achieve easy Effects of collection and delivery, low operating costs, and reduced usage

Active Publication Date: 2015-11-25
BEIJING HANGHUA ENERGY SAVING ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the production process of organophosphorus pesticides, a large amount of waste water with high toxicity, high concentration and complex composition lacks reasonable and effective treatment measures. The traditional biochemical treatment capacity is very limited, and such as electrolysis, flocculation, adsorption, anaerobic, etc Processing technology is still in the stage of laboratory pre-research
Therefore, the treatment of glyphosate wastewater has become a major problem that plagues the production and survival of pesticide companies.

Method used

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  • A method and device for producing sodium pyrophosphate by constant temperature calcination of glyphosate mother liquor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Such as figure 1 As shown, a device for producing sodium pyrophosphate by constant temperature calcination of glyphosate mother liquor according to the present invention includes organophosphorus waste liquid pipeline 1, combustion air pipeline 2, natural gas pipeline 3, and organophosphorus mother liquid pressurization Pump 4, Organic Phosphorus Mother Liquid Storage Tank 5, Combustion Fan 6, Incinerator 7, Cyclone Dust Collector 8, Waste Heat Boiler 9, Slag Remover 10, Bag Dust Collector 11, Sodium Pyrophosphate Packing Machine 12, Water Pipe 13, Mother Liquid Tank 14. Mother liquor pump 15, water washing spray tower 16, induced draft fan 17, chimney 18, etc.

[0022] The incinerator 7 is provided with two combustion chambers (that is, the first combustion chamber and the second combustion chamber connected in sequence). The three inlets of the incinerator 7 are respectively connected to the organic phosphorus waste liquid pipeline 1, the combustion air pipeline 2, and ...

Embodiment 2

[0028] A method for producing sodium pyrophosphate by thermostatic calcination of glyphosate mother liquor using the device described in Example 1, which includes the following steps:

[0029] (A) The organic phosphorus waste liquid is transported to the glyphosate mother liquor storage tank 5, and then the glyphosate mother liquor is transported to the incinerator 7 through the glyphosate mother liquor booster pump 4 for high-temperature incineration; natural gas enters the incinerator through the natural gas pipeline 3 7. The combustion-supporting fan 6 conveys the combustion-supporting air to the incinerator 7 through the combustion-supporting air pipeline 2;

[0030] There are two combustion chambers in the incinerator 7. The reaction temperature in the first combustion chamber is controlled at 700-750°C, the reaction temperature in the second combustion chamber is controlled at 900-1000°C, and the glyphosate mother liquor is in the two combustion chambers of the incinerator 7. ...

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Abstract

The invention provides a method and a device for producing sodium pyrophosphate by forging glyphosate mother liquor at constant temperature. The method comprises the following steps: conveying the glyphosate mother liquor into a combustion furnace for combusting at high temperature; introducing natural gas into the combustion furnace through a natural gas pipeline, and conveying combustion-supporting air into the combustion furnace through a combustion-supporting air pipeline; carrying out pyrolysis and oxidation sequentially on the glyphosate mother liquor in two combustion chambers in the combustion furnace; introducing high-temperature flue gas generated in the combustion furnace to a cyclone deduster, and introducing the glue gas discharged from the cyclone deduster to a residual heat boiler for recycling heat energy in glue gas; reducing the temperature of flue gas at the outlet of the residual heat boiler to 180 DEG C, simultaneously further collecting salts in the flue gas, and conveying the salts to a residue remover from the bottom; conveying the flue gas into a washing spray tower after the flue gas at the outlet of the residual heat boiler enters a cloth bag deduster for further dedusting; exhausting the flue gas which is discharged from the washing spray tower and is conveyed into a chimney through a draught fan to atmosphere. According to the invention, high-concentration organophosphorus pesticide waste water can be treated continuously, stably and efficiently, and the combusted flue gas achieves the national environment protection standard.

Description

Technical field [0001] The invention relates to a technology for the reduction, resource utilization and harmless treatment of high-concentration organophosphorus pesticide wastewater, in particular to a method and device for producing sodium pyrophosphate by constant-temperature calcination of glyphosate mother liquor. Background technique [0002] In the production process of organophosphorus pesticides, a large amount of waste water with high toxicity, high concentration and complex composition lacks reasonable and effective treatment measures. The traditional biochemical treatment capacity is very limited, such as electrolysis, flocculation, adsorption, anaerobic, etc. The processing technology is still in the pre-research stage of the laboratory. Therefore, the treatment of glyphosate wastewater has become a major problem that plagues the production and survival of pesticide companies. [0003] The biggest advantage of incineration is that it can reduce the amount of waste wa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23G7/04F23J15/00F23N5/00C01B25/42
CPCY02P20/129
Inventor 徐扬罗哲张范王为伟周皓刘迪王鹏举尚玉光
Owner BEIJING HANGHUA ENERGY SAVING ENVIRONMENTAL PROTECTION TECH CO LTD