Method of concentrating and separating glyphosate in high salt content glyphosate mother liquor by film technique
A technology of glyphosate mother liquor and medium glyphosate, which is applied in chemical instruments and methods, compounds of group 5/15 elements of the periodic table, natural water treatment, etc., can solve high energy consumption, steam consumption, high treatment cost, etc. problems, to achieve the effect of protecting the environment, improving quality, and realizing recycling
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Example Embodiment
[0015] Example 1:
[0016] In the process of preparing glyphosate by the alkyl ester method, the 10000kg mother liquor after neutralization and separation of triethylamine is pumped into the raw material liquid tank after pressure filtration by a filter press or a bag filter or a precision filter. The glyphosate mother liquor is pumped into a multi-media filter containing activated carbon to remove the viscous liquid from the mother liquor with a pump with a head of 20m, and then the micro-particles in the mother liquor are directly removed through a 50μm microporous filter membrane. The mother liquor reaches water quality. When the pollution index SDI is less than or equal to 5, it will enter the first-level membrane system after being pressurized by the high-pressure pump. The glyphosate mother liquor solution entering the primary membrane system is separated into two strands after the primary membrane separation. The solution rich in glyphosate on the concentrated side returns ...
Example Embodiment
[0019] Example 2:
[0020] 200kg of sulfuric acid was added to the 2000kg mother liquor for preparing glyphosate by air oxidation of glyphosate to adjust PH=1.2, and 350kg of glyphosate technical medicine and 1840kg mother liquor were obtained through filtration and separation. Ammonia gas 20kg was passed into the mother liquor, PH=2.5. The mother liquor is press-filtered by a filter press or a bag filter or a precision filter and then pumped into the raw material liquid tank. The glyphosate mother liquid in the raw material liquid tank is pumped into a multi-media filter containing activated carbon by a 30m pump. Remove the viscous liquid in the mother liquor, and then directly remove the micron particles in the mother liquor through a microporous filter membrane with a pore size of 50μm. When the mother liquor reaches the water pollution index SDI≤5, it is pressurized by a high-pressure pump and enters the primary membrane system. The glyphosate mother liquor solution entering t...
Example Embodiment
[0023] Example 3:
[0024] In the process of preparing glyphosate by the alkyl ester method, the 10000kg mother liquor after neutralization and separation of triethylamine is pumped into the raw material liquid tank after pressure filtration by a filter press or a bag filter or a precision filter. The glyphosate mother liquor is pumped into a multi-media filter containing activated carbon to remove the viscous liquid from the mother liquor with a pump with a head of 20m, and then the micro-particles in the mother liquor are directly removed through a 50μm microporous filter membrane. The mother liquor reaches water quality. When the pollution index SDI is less than or equal to 5, it will enter the first-level membrane system after being pressurized by the high-pressure pump. The glyphosate mother liquor solution entering the primary membrane system is separated into two strands after the primary membrane separation. The solution rich in glyphosate on the concentrated side returns ...
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