FIELD: chemistry.
SUBSTANCE: invention relates to production of furfural and a system for recycling furfural-containing waste water. The method and system for recycling furfural-containing waste water involve movement of furfural-containing waste water in an evaporation system with subsequent heating to obtain vapour of waste water, returning the vapour of waste water into a hydrolysis reactor for recirculation of furfural-containing waste water, recycling furfural-containing residue formed after evaporation of the waste water. The invention also relates to a method of producing furfural which uses the said method and system for recycling furfural-containing waste water.
EFFECT: invention enables to reduce production costs and cost of equipment, ensure zero discharge of furfural-containing waste water with prevention of repeated contamination, recycle combustible substances.
21 cl, 5 dwg, 1 tbl, 4 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PRODUCING FURFURAL | 0 |
|
SU1176840A3 |
| METHOD OF PRODUCING FURFURAL | 0 |
|
SU1759838A1 |
| PROCESS FOR TREATING VEGETABLE STOCK FOR PREPARING FURFUROL IN ALCOHOL-YEAST PRODUCTION | 1992 |
|
RU2041219C1 |
| PROCESS FOR PREPARING FURFURAL | 0 |
|
SU1062208A1 |
| PROCESS FOR ISOLATING FURFURAL-CONTAINING CONDENSATE FROM HYDROLYSATE OF VEGETABLE FEEDSTOCK | 0 |
|
SU925956A1 |
| METHOD FOR PRODUCING FURFURAL FROM BIOMASS | 2015 |
|
RU2713660C2 |
| METHOD OF REFINING RAW FURFURAL | 0 |
|
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| METHOD OF PRODUCING FURFUROL AND ACETIC ACID | 1996 |
|
RU2113436C1 |
| METHOD OF PREPARING NUTRIENT SUBSTRATE FOR YEAST GROWING | 0 |
|
SU1558983A1 |
| PROCESS AND APPARATUS FOR PRODUCING FURFURAL | 0 |
|
SU1109397A1 |
