CN204293986U - A kind of threonine fermentation liquid pretreatment system - Google Patents

Abstract

A kind of threonine fermentation liquid pretreatment system, be made up of pretreatment unit and bacterium Slag treatment device, described bacterium Slag treatment device is by the bacterium slag ladle vertically arranged, bacterium pulp pump, multiple stage plate and frame filter press, clear liquid transfer tank, clear liquid pump and bag filter composition, described pretreatment unit is by fermentation tank, blanking pump, pressure curved sieve, oversize transferring box, pocket type filter screen and zymotic fluid storage tank composition, native system sieves threonine fermentation liquid, ensure that the silk floccule of threonine fermentation liquid is separated, utilize bacterium Slag treatment device to carry out secondary filter simultaneously, to filter residue recycling.

Description

A threonine fermentation broth pretreatment system

technical field

The utility model relates to a fermentation liquid pretreatment device, in particular to a threonine fermentation liquid pretreatment system.

Background technique

When the threonine fermentation broth is filtered by ceramic membrane, the threonine fermentation broth contains silk flocs produced by corn steep liquor hydrolyzate, which can easily block the ceramic membrane filter and membrane channels, resulting in the operating pressure of the ceramic membrane. If it is too high, the filtration efficiency will be reduced, and the production capacity will not meet the design requirements. It is necessary to stop the filtration equipment, clean and regenerate the filtration equipment, or even remove the ceramic membrane element for manual cleaning. A lot of cleaning chemicals and manpower are wasted, which affects the normal operation of materials.

The original treatment process of threonine bacterial residue uses an 8-ton four-effect falling film evaporator to concentrate during the treatment process. The original treatment equipment occupies a large area and requires high investment. It needs to waste a lot of raw steam and electricity, resulting in high production costs. And it needs to discharge a large amount of sewage and waste gas, polluting the environment.

Utility model content

In order to solve the above-mentioned technical problems, the utility model provides a threonine fermentation liquid pretreatment system, which screens the threonine fermentation liquid to ensure that the silk flocs of the threonine fermentation liquid are separated, and at the same time utilizes the bacteria residue The processing device performs secondary filtration and recycles the filter residue for reuse.

In order to achieve the above technical purpose, the technical solution adopted is: a threonine fermentation liquid pretreatment system, which is composed of a pretreatment device and a fungal residue treatment device, and the fungal residue treatment device is composed of a vertically arranged fungal residue tank , bacteria residue pump, multiple plate and frame filter presses, clear liquid transfer tank, clear liquid pump and bag filter. Box, bag filter and fermentation liquid storage tank, the discharge port of the fermentation tank is connected to the feeding pump, the feeding pump is connected to the pressure curved screen through the feeding pipeline, and the under-screen part of the pressure curved screen is connected to the fermentation storage liquid through the pipeline The tank is connected, the oversize part of the pressure curved sieve is connected with the oversize transfer box through a pipeline, and a bag filter is arranged in the oversize transfer box, and the oversize transfer box is connected with the fermentation liquid storage tank through a pipeline, and the fermentation storage The liquid tank is connected to the fungal residue tank through pipelines, and the fungal residue pump is installed on the pipeline connecting the fungal residue tank and each plate and frame filter press, and the liquid outlet pipe of each plate and frame filter press is connected to the clear liquid transfer tank. The clear liquid transfer tank is connected with the bag filter through the clear liquid pump.

Beneficial effects of the utility model:

1. This pretreatment device uses a pressure curved sieve for primary separation, and then performs secondary separation through a transfer box to ensure that the silk flocs in the threonine fermentation are completely separated.

2. The discharge pump of the bacteria residue tank is connected to the plate frame through the pipeline, and enters the plate frame through the pipeline, and the plate and frame filtrate flows to the clear liquid transfer tank through the clear liquid transfer pump and enters the clear liquid storage tank through the pipeline, and the clear liquid passes through the bag filter Filtration enters the next process for recycling, and the resulting filter cake is shaped and can be sold directly. The threonine bacterial residue treatment device process does not use steam during the treatment process, with low power consumption and small footprint. No sewage and waste gas are produced, the treatment efficiency is high, the cost is saved, and the treatment efficiency is improved. Moreover, a part of threonine contained in the fungus residue can be recovered, thereby increasing economic benefits.

Description of drawings

Fig. 1 is the structural representation of the utility model;

In the figure: 1. Fermentation tank, 2. Feeding pump, 3. Pressure curved screen, 4. Transfer box for sieve, 5. Bag filter, 6. Fermentation liquid storage tank, 7. Discharging pipeline, 8. Outlet pipe, 801, stirring rod, 802, stirring rod, 803, stirring blade, 804, wiping plate, 9, bacteria residue tank, 10, bacteria residue pump, 11, plate and frame filter press, 12, clear liquid transfer tank , 13, clear liquid pump, 14, bag filter.

Detailed ways

As shown in the figure, a threonine fermentation liquid pretreatment system is composed of a pretreatment device and a fungus residue treatment device. The fungus residue treatment device is composed of a vertically arranged fungal residue tank 9, a fungal residue pump 10, multiple A platen frame filter press 11, a clear liquid transfer tank 12, a clear liquid pump 13 and a bag filter 14 are composed, and the pretreatment device is composed of a fermenter 1, a feed pump 2, a pressure curved sieve 3, and an oversize The transfer box 4, the bag filter 5 and the fermentation liquid storage tank 6 are composed. The discharge port of the fermentation tank 1 is connected to the feeding pump 2, and the feeding pump 2 is connected to the pressure curved screen 3 through the feeding pipeline 7, and the pressure curved screen 3 The under-sieve part of the sieve is communicated with the fermentation liquid storage tank 6 through a pipeline, and the over-sieve part of the pressure curved sieve 3 is connected with the oversize transfer box 4 through a pipeline, and a bag filter 5 is arranged in the oversize transfer box 4, and the sieve The upper material transfer box 4 is communicated with the fermentation liquid storage tank 6 through a pipeline, and the fermentation liquid storage tank 6 is connected with the fungus residue tank 9 through a pipeline, and the pipeline connecting the bacteria residue tank 9 and each plate and frame filter press 11 is provided with bacteria The slag pump 10 and the outlet pipe of each plate and frame filter press 11 are connected to the clear liquid transfer tank 12 , and the clear liquid transfer tank 12 is connected to the bag filter 14 through the clear liquid pump 13 .

A plurality of wipers can be provided to wipe the position of the discharge port to prevent the fermentation liquid from clogging the discharge port of the fermenter.

Inject the untreated threonine fermentation liquid into the fermenter, and the fermentation liquid is continuously input into the pressure curved sieve by the feeding pump, and the pressure curved sieve divides the fermentation liquid into the upper liquid and the lower liquid, and the lower liquid reaches the filtration standard and is sent into the Fermentation liquid storage tank, the upper sieve liquid pipeline is transported into the transfer box again, and is filtered by the bag filter in the transfer box. The transfer box is equipped with an openable box cover, which can be taken out for cleaning to prevent Blocking, at the same time, the filter can be set in multiple layers to perform multi-stage filtration. The mesh hole of the filter gradually becomes smaller from the inlet to the outlet of the transfer box. This setting can completely filter the flocs without Affect the transmission flow of the fermentation broth, the sieve liquid and the sieve liquid are mixed into the fermentation liquid storage tank for storage, and the primary threonine solution in the fermentation liquid storage tank is passed into the fungus residue tank.

The slag tank is vertically set, and the slag is sent to the slag pump from the slag outlet by gravity. The slag in the slag tank 1 is sent to each plate and frame filter press by the slag pump, and the plate and frame filter press 3 The fungus residue is divided into clear liquid and fungal mud cake, and the clear liquid is collected by the clear liquid transfer tank. The clear liquid transfer tank can be divided into multiple levels, arranged from high to low, small to large, and the fungal residue tank and plate frame The filter presses are all installed at high places, and all the clear liquid is collected by gravity, and the collected clear liquid is pumped into the bag filter for secondary filtration through the clear liquid pump, and the filtered clear liquid is sent out through the liquid outlet pipe, sent to Recycling is carried out in the next process.

Claims (1)

1. a threonine fermentation liquid pretreatment system, it is characterized in that: be made up of pretreatment unit and bacterium Slag treatment device, described bacterium Slag treatment device is by the bacterium slag ladle (9) vertically arranged, bacterium pulp pump (10), multiple stage plate and frame filter press (11), clear liquid transfer tank (12), clear liquid pump (13) and bag filter (14) composition, described pretreatment unit is by fermentation tank (1), blanking pump (2), pressure curved sieve (3), oversize transferring box (4), pocket type filter screen (5) and zymotic fluid storage tank (6) composition, the discharging opening of fermentation tank (1) connects blanking pump (2), blanking pump (2) is connected with pressure curved sieve (3) by blanking pipe (7), the lower part of screen of pressure curved sieve (3) is divided and is communicated with fermentation fluid reservoir (6) by pipeline, the sieve upper part of pressure curved sieve (3) is connected with oversize transferring box (4) by pipeline, pocket type filter screen (5) is provided with in oversize transferring box (4), oversize transferring box (4) is communicated with fermentation fluid reservoir (6) by pipeline, fermentation fluid reservoir (6) is connected with bacterium slag ladle (9) by pipeline, the pipeline that bacterium slag ladle (9) is connected with every platform plate and frame filter press (11) is equipped with bacterium pulp pump (10), the drain pipe of every platform plate and frame filter press (11) is communicated with clear liquid transfer tank (12), clear liquid transfer tank (12) is connected with bag filter (14) by clear liquid pump (13).