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Process for drying thallus residues in lactic acid production

A drying process and cell technology, applied in the field of cell slag drying technology in lactic acid production, can solve the problems of high viscosity of cell slag, perishable deterioration, incomplete drying, etc., and achieves easy dispersion and decomposition, easy drying, reducing The effect of drying difficulty

Active Publication Date: 2022-03-08
河南金丹乳酸科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For this reason, the technical problem to be solved by the present invention is to provide a drying process for bacterial residue in lactic acid production, to solve the problem of bacterial residue due to high viscosity and complex components. The problem of perishable deterioration during storage and stacking caused by incomplete drying

Method used

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Examples

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Effect test

Embodiment 1

[0028] In this embodiment, the drying process of the thallus slag in the production of lactic acid comprises the following steps:

[0029] Step A: Add urea solution to the thallus slag filtered by the plate frame, stir and mix evenly, and place it to obtain the mixed material A; the mass fraction of urea in the urea solution is 50wt%, and the thallium slag and the The weight ratio of urea solution is 25:1; the standing time is 8h.

[0030] Step B: Add a treatment agent to the mixture A, stir and mix evenly, and place it to obtain the mixture B; the treatment agent is dimethyl dicarbonate, sodium pyrophosphate and urea phosphate, and the dimethyl dicarbonate The three treatment agents of salt, sodium pyrophosphate and urea phosphate were added to the mixture A in turn, and stirred while adding; the ratio of the total amount of the three treatment agents to the weight of the mixture A was 1:80; adding 3 The treatment agent is placed for 3 hours after being mixed evenly, and the...

Embodiment 2

[0037] In this embodiment, the drying process of the thallus slag in the production of lactic acid comprises the following steps:

[0038] Step A: Add urea solution to the thallus slag filtered by the plate frame, stir and mix evenly, and place it to obtain the mixed material A; the mass fraction of urea in the urea solution is 40wt%, and the thallium slag and the The weight ratio of urea solution is 10:1; the standing time is 4h.

[0039] Step B: Add a treating agent to the mixed material A, stir and mix evenly, and place it to obtain the mixed material B; the treating agent is dimethyl dicarbonate, and the amount of the treating agent added is the same as that of the mixed material A The weight ratio is 1:100; the standing time after adding the treatment agent and mixing evenly is 5h.

[0040] Step C: place the mixed material B in the reactor, and spray concentrated sulfuric acid into the reactor under stirring, and obtain the mixed material C after the reaction; the concen...

Embodiment 3

[0046] In this embodiment, the drying process of the thallus slag in the production of lactic acid comprises the following steps:

[0047] Step A: Add urea solution to the thallus slag filtered by the plate frame, stir and mix evenly, and place it to obtain the mixed material A; the mass fraction of urea in the urea solution is 40wt%, and the thallium slag and the The weight ratio of urea solution is 10:1; the standing time is 4h.

[0048] Step B: Add a treating agent to the mixed material A, stir and mix evenly, and place it to obtain the mixed material B; the treating agent is sodium pyrophosphate, and the ratio of the added amount of the treating agent to the weight of the mixed material A is 1:100; After adding the treatment agent and mixing evenly, the standing time is 5h.

[0049] Step C: place the mixed material B in the reactor, and spray concentrated sulfuric acid into the reactor under stirring, and obtain the mixed material C after the reaction; the concentration o...

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Abstract

The invention discloses a process for drying thallus residues in lactic acid production, which comprises the following steps: step A, adding a urea solution into thallus residues filtered by a plate frame, uniformly stirring and mixing, and standing to obtain a mixed material A; step B, adding a treating agent into the mixed material A, uniformly stirring and mixing, and standing to obtain a mixed material B; step C, putting the mixed material B into a reaction kettle, spraying concentrated sulfuric acid into the reaction kettle while stirring, and obtaining a mixed material C after the reaction is finished; and step D, transferring the mixed material C into drying equipment for drying, and completing the drying process of the thallus residues in the lactic acid production after the drying is finished. The method solves the problem that the thallus residues are easy to rot and deteriorate during storage and stacking due to incomplete drying caused by high viscidity, complex components and the like of the thallus residues.

Description

technical field [0001] The invention relates to the technical field of drying thallus slag. Specifically, it is a drying process of bacterial residue in lactic acid production. Background technique [0002] At present, lactic acid production at home and abroad mostly uses corn as the main raw material in the fermentation of lactic acid bacteria. After saccharification, it is fermented. After the fermentation, it is necessary to add excess calcium oxide or calcium hydroxide to the fermentation broth to neutralize the generated lactic acid. Fermented mash with calcium lactate. The calcium lactate solution contained in the fermented mash is separated from the fermented mash after plate and frame filtration, and the obtained calcium lactate solution is further processed to obtain lactic acid; the filter residue obtained after plate and frame filtration is dried by a drum dryer and has a water content of about 10wt% bacterial residue; but the characteristics of this bacterial r...

Claims

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Application Information

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IPC IPC(8): A23K10/16A23K20/24A23K40/00A23K30/20F26B11/02
CPCA23K10/16A23K20/24A23K40/00A23K30/20F26B11/02Y02P60/87
Inventor 师媛媛崔洋穆鹏宇王浩张树银张国宣顾永华李义生徐炜邢晓霞吴毓华鲁锋张亚辉马全磊付雪艳
Owner 河南金丹乳酸科技股份有限公司
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