In a kind of Sucralose and the processing method of press filtration workshop section ammonium chloride waste residueTechnical field：
The invention belongs to chemical production technical fields, are related to a kind of production of Sucralose, and in particular to a kind of Sucralose neutralizesThe processing method of press filtration workshop section ammonium chloride waste residue.
Background technology：
Sucralose is a kind of novel confectionery additive, and sugariness is about more than 600 times of sucrose, safe, performanceStablize, be a kind of novel high quality, non-nutritive high-potency sweetener, be widely used in food processing and production field.
Industrially mostly using ester process produce Sucralose, but in sucrose trichloride production process in and press filtration workshop section can produceRaw a large amount of solid slag.At present production in mostly by a large amount of solid slags that this workshop section generates send outside to offal treatment company intoThe processing of row burning and burying.And in solid slag it is largely ammonium chloride.On the one hand it is certain to generate a large amount of solid slag in producingIt restricts the production of Sucralose in degree, is on the other hand directly generated to neutralizing press filtration workshop section during this fraction solids waste residueSolid slag seriously restrict the development of Sucralose industry, how to be treated as that there is an urgent need for solutions to the solid slag of generationCertainly the problem of.
Invention content
The purpose of the present invention is to solve the solid slags that the generation of press filtration workshop section is neutralized in sucrose trichloride production process, carryFor in a kind of Sucralose and the processing method of press filtration workshop section ammonium chloride waste residue.
The specific technical solution that the present invention uses is as follows：
In a kind of Sucralose and the processing method of press filtration workshop section ammonium chloride waste residue, using following equipment：Dissolution kettle, filter press,Cool down kettle, crystallization kettle, centrifuge；
Filter press, cooling kettle, crystallization kettle are connected serially to centrifuge by dissolution kettle successively by pipeline；
Characterized by the following steps：
1. adding in ammonium chloride waste residue, pure water into dissolution kettle, pure water is controlled：The mass ratio of ammonium chloride waste residue is 1.4：1, and addThe activated carbon for entering ammonium chloride waste residue weight 1.7% decolourizes, control dissolution kettle temperature at 85 DEG C -95 DEG C, to ammonium chloride waste residue intoRow dissolving；
2. the solution after decoloration is sent into filter press and carries out press filtration, activated carbon and organic impurities are removed, then solution is sent into and is droppedWarm kettle cools down, and opens recirculated water, and when the kettle temperature degree that cools down is down to 40 DEG C, solution is sent into crystallization kettle；
3. opening recirculated water to cool down to crystallization kettle, when crystallization kettle temperature is down to 35 DEG C, crystal mixed liquor is sent into and is centrifugedMachine, control rotating speed can obtain wet product industrial grade ammonium chloride and mother liquor after 1700r/min, centrifugation, and the mother liquor after centrifugation is continued to employ；
4. when mother liquor amount saves certain amount, mother liquor is returned into dissolution kettle and substitutes pure water use, controls mother liquor：Ammonium chloride waste residueMass ratio be 3.2：1, and add in the activated carbon of ammonium chloride waste residue weight 1.7%, repeat above-mentioned dissolving, press filtration, cooling, crystallization,Centrifugation and etc..
The advantage of the invention is that：The a large amount of waste residues generated in Sucralose production have been effectively treated, have reduced environment dirtDye, and byproduct ammonium chloride is recycled, improve economic benefit.The mother liquor waste water generated during Solid state fermentation, by mother liquor setIt is concentrated with company MVR, processing has also been effectively performed.
Description of the drawings：
Fig. 1 is in a kind of Sucralose and press filtration workshop section ammonium chloride Solid state fermentation process diagram.
Specific embodiment
As shown in Figure 1, in a kind of Sucralose and the processing method of press filtration workshop section ammonium chloride waste residue, using following equipment：Dissolution kettle, filter press, cooling kettle, crystallization kettle, centrifuge；
Filter press, cooling kettle, crystallization kettle are connected serially to centrifuge by dissolution kettle successively by pipeline；
Specific implementation step is as follows：
1st, ammonium chloride waste residue 430Kg, pure water 600L and activated carbon 8Kg are put into dissolution kettle, opening steam makes dissolution kettle heat upTo 85 DEG C, stirring carries out dissolving decoloration in 1.5 hours, and lysate then is sent into filter press carries out press filtration removal activated carbon and organicImpurity；
2nd, the lysate after press filtration is sent into cooling kettle, and opens recirculated water and cool down to cooling kettle, cooling kettle temperature degree is down toAt 40 DEG C, the solution in the kettle that cools down is sent into crystallization kettle, recirculated water is opened and cools down to crystallization kettle, when crystallization kettle temperature drops toAt 35 DEG C, mixed crystal feeding centrifuge is centrifuged, control rotating speed obtains wet product industrial grade ammonium chloride in 1700r/min,Yield more than 50%, continue to employ by the mother liquor after centrifugation；
4th, it treats that mother liquor saves 4.5 ton hours, 1.4 tons of ammonium chloride waste residue, 4.5 tons of mother liquor and activated carbon 24Kg is put into dissolution kettle,Opening steam makes dissolution kettle be warming up to 85 DEG C, and stirring carries out dissolving decoloration in 1.5 hours, and lysate then is sent into filter press carries outPress filtration removes activated carbon and organic impurities；
2nd, the lysate after press filtration is sent into cooling kettle, and opens recirculated water and cool down to cooling kettle, cooling kettle temperature degree is down toAt 40 DEG C, the solution in the kettle that cools down is sent into crystallization kettle, recirculated water is opened and cools down to crystallization kettle, when crystallization kettle temperature drops toAt 35 DEG C, mixed crystal feeding centrifuge is centrifuged, control rotating speed obtains wet product industrial grade ammonium chloride in 1700r/min,More than 50%, the mother liquor after centrifugation concentrates yield through mother liquid recycle and MVR.
The solubility with temperature difference in change opposite sex of ammonium chloride is very big, and using the temperature solubility curve of ammonium chloride, use is moltenSolution, decoloration, filtering, centrifugation and etc. impurity is removed, obtain the method for industrial level ammonium chloride.