SU1111786A1 - Apparatus for percolation hydrolysis of vegetable raw material - Google Patents

Abstract

CTPOfiCTBO; THE GROWTH OF THE GROWTH PKRKOLYATIO GVDROLIZE, containing a housing with a lower conical part and nozzles for the feed of raw materials. filter tubes with nozzles for sampling hydrolyzate and a device for unloading lignin, characterized in that, in order to improve the filtration process for reducing non-dischargeable lignin residue, the tapping point of hydrolyte is located on the lower conical part of the body, fitted with a filtering grid and placed over the blades, The lignin diving device is equipped with a cork, the end of which is connected to the blades, while the filter tubes are located at the center of the body.

Description

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a: The invention relates to the hydrolysis industry and can be used to improve the hydrolysis technology. A device for percolating hydrolysis of plant materials is known, including a housing with a lower conical part and nozzles for feeding raw materials, filtering pipes with nozzles for selecting a hydrolyzate, and a device for unloading lignin tij. A disadvantage of the known device is the formation of a non-dischargeable solid residue, which reduces the useful volume of the apparatus, impairs the hydrolyzate production and requires periodic stopping of the apparatus for manual cleaning, besides, the lignin is unloaded at the end of cooking. l through a quick-acting valve volley, making it difficult to capture and condense emissions. The purpose of the invention is to improve the filtering process by reducing the non-dischargeable residue. The goal is achieved by the fact that, in a device for percolation of plant raw material containing a housing with a lower cone and feed nozzles, filter pipes with nozzles for hydrolyzate withdrawal and a lignin discharger, the hydrolyzate withdrawal nozzle is located on the lower cone of the housing equipped with filtering grids and blades placed above it, and a device for unloading lignin is provided with a stopper, the end of which is connected to the blades, while the filter tubes are located at prices tral parts of the body. FIG. 1 shows the proposed device, a longitudinal section; in fig. 2 - view of the lower conical part of the apparatus. The device consists of a housing 1 with nozzles of raw material supply 2, supply of cooking acid steam 3, removal of furfurol-containing vapors and inert gases 4, removal of hydrolyzate 5 from the filter tubes 6 through the cone grate 7. In the lower part of the cone, the filter grate 8 is located above it blades 9 are fixed to the plug 10 of the crane 11 with hydraulic actuator 12, the valve 13 is fixed to the cork valve, on the cylindrical part of the body there are four current tubes 14. The blades 9 in the amount of four pieces are fixed with a ring 15 to the butt of the plug 10. Ustr Jostvo works as follows. A mixture of sawdust and blacks is loaded into the housing 1 and cooking acid is fed through the nozzle 3 at the same time. After the raw material is loaded, the crinkles are closed and the mass to be hydrolyzed is heated by supplying direct steam through the filter tube 6 and filter grid 8. After the warm-up is completed, the steam supply is stopped and the cooking acid is started with supply of cooking acid through the nozzle 3 with simultaneous removal of the hydrolyzate through filter tubes 14 and filter the grid 8, after which the washing process is carried out by supplying water through the nozzle 3. After washing, the hydrolyzate is squeezed from the lignin through the filter grid 8 and the filtering the pipe 6, while for the best filtration, the hydraulic actuator 12 is turned on, the plug 10 of the crane 11 together with the blades 9 rotates by 90 ° and the blades clean the surface of the filtering grate 8. At the end of the spinning process, install the plug 10 of the valve 11 in the closed position, open the valve 13 and prepare the apparatus for unloading lignin. The lignin is unloaded by turning the plug 10 of the crane 11 to 90, while the blades loosen the lignin above the filtering grid 8, which is completely unloaded from the apparatus by overpressure. For batch discharge of lignin from the apparatus, in order to condense harmful vapors, the valve 11 is closed and opened during the discharge of lignin. Thus, by loosening the lignin and cleaning the bottom filter, the filtration process is improved, which reduces the cooking time, reduces the breakdown of sugars, and increases the yield of PB from the cooking. The loosening of the lignin lobes above the filter grating allows one to reduce or even completely eliminate the formation of a non-dischargeable residue, which periodically has to be unloaded by the hand, for which purpose the machine is ready for cleaning.

In addition, the discharge of lignin using a cork valve allows

FIG.

This process can be carried out cyclically, while harmful vapors removed into the atmosphere can be condensed to obtain the additional product furfural.

Claims (1)

DEVICE FOR PERCOLATION HYDROLYSIS OF VEGETABLE RAW MATERIALS, comprising a housing with a lower conical part and branch pipes for the day of supply of raw materials. filter tubes with nozzles for selecting the hydrolyzate and a device for unloading lignin, characterized in that, in order to improve the filtration process by reducing the non-discharged lignin residue, the nozzle for selecting the hydrolyzate is located on the lower conical part of the housing, equipped with a filter grate and blades placed above it, and The device for unloading lignin is equipped with a plug, the end of which is connected to the blades, while the filter pipes are located in the central part of the housing.