SU31835A1 - The method of using waste diffusion water by returning them to diffusion - Google Patents

Description

The proposed method of using waste diffusion water is that from the diffuser intended for unloading, all diffusion water is downloaded directly by a diffusion pump, at the same time filling it with press water, which then serves as a mechanical factor for unloading pulp from the diffuser. which used to be diffusion water.

The method aims to make it possible to reduce the percentage of pumping of diffusion juice, to reduce steam consumption, as well as to reduce the consumption of mechanical energy for the entire diffusion plant. In FIG. 1 shows a diffusion scheme with wastewater return and FIG. 2-diagram of the diffusion battery.

As can be seen from the diagram in FIG. 1, the water from the pulp presses enters the pulp, discharged from the diffusers of the pulp shtsek, and, having passed through the pulp thickness, is filtered off, leaving a significant portion of suspended substances on it; this also enters the water along with the pulp when it is discharged from the diffusers, which in this case is press water. The filtered water is taken by pump 7 and fed to the upper box 2, and already –s to (420);

the latter, through communication, passing through the entire diffusion battery, by opening the corresponding valves, is fed into the diffuser to discharge the pulp (the capacity of the press water box should be approximately equal to the capacity of the diffuser).

Thus, it can be used several times the amount of water obtained from washing the diffusers. The transfer of diffusion water from a diffuser intended for discharge into a subsequent diffuser is carried out by communication located at the bottom of the diffusers and connected to the communication of barometric water for diffusion, as shown in FIG. 2, and through the valve drain the water to the diffusion pump. The order of operation on the proposed diffusion battery is as follows. Let the diffuser / (fig. 2) be filled with soybean // - loaded with fresh chips, /// - unloaded, and / F open the water pressure. When the diffuser is filled with juice and the juice starts to be pumped out of it to the measuring tanks, the water valve is opened at the diffuser U and the transition valve 5 is closed at the same time as the diffuser drain valve and press water from the distributor p and the valve is closed

water bt; Thus, the diffusion of water from the diffractor / F is pumped through the valve c and fed to the diffuser V via water communication to diffusion through the valve from. At this time, barometric water will not be able to flow to the pump, as the level of pumped diffusion water is much higher than the level of barometric water. At the same time, press water from box C enters the diffuser fV 11 through valve R. When juice is pumped out n & merniki, produce a set with the juice of a freshly loaded diffuser / 7, close the valves Ct and unload the diffuser 1U in an ordinary putsch; washing the diffuser with barometric water, opening the water valve in this case is the same as when working after flushing, then the diffuser is closed and it is ready to receive fresh chips; at the same time, the barometric water already enters the diffuser U.

Further, when recruiting the juice of the diffuser II, the same manipulations are performed in the same order. Thus, the proposed diffusion battery in its final form will be a persistent diffusion battery with a modified valve arrangement.

According to the proposed method, the diffusion water is not in contact with air, since it is pumped out directly by the pump i of the diffuser, which has

the aim is to prevent the possibility of microorganisms getting out of the air, and, consequently, the possibility of water zaknsni; this eliminates the possibility of foaming juices; In addition, the diffusion water is pumped from the diffuser completely clean without pulp, as the pulp remains with the pulp in the diffuser. In the presence of pulp presses, pulp water, which is fed into the pulp auger, is also pre-filtered, passing through the thickness of the pulp and leaving its suspended particles.

Subject and discoveries.

The method of using waste diffusion waters by returning them to diffusion, characterized in that, in order to protect diffusion waters intended to return to diffusion from contact with outside air and eliminate the possibility of their being infected with microorganisms, the diffusion waters are pumped by a diffusion pump directly into a regular diffuser with chips, without the use of any purification of the aforementioned waters from the pulp, and simultaneously with the pumping of diffusion water, A discharge water diffuser with press water serves as a mechanical factor when the pulp is unloaded in the usual order.

To the author's certificate of G. N. Shevchenko and A. S. Fedchenko, No. 31835

. P.

Lenprompschatsoyuz. Type of. „Pecs. Labor Zak 5404-1000