CN217829448U

CN217829448U - Fermentation tail gas treatment device

Info

Publication number: CN217829448U
Application number: CN202221833359.3U
Authority: CN
Inventors: 张维清; 张启; 胡昌旭; 张振昌; 施志伟
Original assignee: Nanjing University Environmental Planning And Design Institute Group Co ltd
Current assignee: Nanjing University Environmental Planning And Design Institute Group Co ltd
Priority date: 2022-07-18
Filing date: 2022-07-18
Publication date: 2022-11-18
Anticipated expiration: 2032-07-18

Abstract

The utility model discloses a fermentation tail gas treatment device, which comprises a steady flow box, a gas-liquid separator, a primary condenser, a secondary condenser, a primary sodium hypochlorite spray tower, a secondary sodium hypochlorite spray tower, a primary alkaline tower and a sprayer which are connected in sequence, thereby realizing the high-efficiency thorough purification treatment of fermentation waste gas; the motor drives the rotation axis rotatory, thereby it is rotatory to drive reciprocal lead screw, when just beginning to rotate, reciprocal lead screw can drive the shower and rotate together, do not move between reciprocal lead screw and the shower is relative promptly, when shower one end and dog contact, the shower is no longer rotatory this moment, under the effect of reciprocal lead screw, the shower realizes upwards or downstream, rotation and up-and-down motion through the shower, thereby the shower that makes to spray can cover the transverse section on spraying the layer, thereby make fermentation waste gas can be better and shower mix the contact, thereby realize high-efficient purification fermentation tail gas.

Description

Fermentation tail gas treatment device

Technical Field

The utility model relates to a gas purification field, more specifically say, relate to a fermentation tail gas processing apparatus.

Background

Fermentation tail gas generated in the development processes of genetic engineering, cell engineering, enzyme engineering and fermentation engineering has unpleasant smell and components harmful to human bodies and environment, cannot be directly discharged into the atmosphere, and must be treated firstly;

the patent number 2011202920876 discloses a fermentation tail gas comprehensive utilization device, which introduces the fermentation tail gas after the prior treatment into an aerobic biochemical tank to supplement oxygen required by microorganisms, and a check valve is added on a gas connecting pipeline to prevent backflow, thereby solving the pollution problem caused by the discharge of the fermentation tail gas and reducing the power consumption problem of the aerobic biochemical tank;

the patent number is 2018202398553, which discloses a fermentation tail gas treatment device, wherein a cooler connecting pipe and a bypass connecting pipe which are respectively connected with a gas inlet and a gas outlet of a gas cooler are arranged, and control valves are arranged on the cooler connecting pipe and the bypass connecting pipe, so that when a plurality of fermentation tanks work, tail gas in the fermentation tank to be cleaned is cooled by the gas cooler and then enters an alkali liquor absorption tower by controlling the opening and closing of the corresponding control valves, and further the influence on the absorption of the alkali liquor absorption tower can be avoided, and the treatment effect on the fermentation tail gas can be ensured;

this patent provides a novel efficient fermentation tail gas processing apparatus.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved

To the incomplete problem of purification treatment who exists among the prior art, the utility model aims to provide a fermentation tail gas processing apparatus, it can realize high-efficient purification fermentation tail gas.

2. Technical scheme

In order to solve the problem, the utility model adopts the following technical proposal.

The utility model provides a fermentation tail gas processing apparatus, includes the stationary flow case, vapour and liquid separator, one-level condenser, second grade condenser, one-level sodium hypochlorite spray tower, second grade sodium hypochlorite spray tower, one-level alkaline tower and the atomizer that link to each other in proper order.

And a differential pressure gauge is arranged in the gas-liquid separator.

The first-stage condenser and the second-stage condenser both adopt tube type heat exchangers.

The primary sodium hypochlorite spray tower comprises a shell, wherein an air outlet is formed in the top end of the shell, an air inlet is formed in the bottom end of the shell, a filter plate is arranged at the top end of the interior of the shell, a motor is arranged above the filter plate and connected with the top end of a rotating shaft, and the bottom end of the rotating shaft is rotatably connected with the bottom end of the shell; the filter below is provided with a plurality of packing layers, for spraying the layer between two packing layers, the shells inner wall that sprays the layer evenly is provided with a plurality of dogs, sprays the layer top and is provided with a plurality of shower nozzles, is provided with a plurality of shower nozzles on the shower, and the part that rotation axis and shower are connected is reciprocal lead screw, and the tip of each shower is located between two dogs.

And a rotating shaft below the spray pipe is connected with a first stirring fan, and a rotating shaft between the packing layer at the lowest part and the air inlet is connected with a second stirring fan.

The casing bottom be provided with a plurality of apopores, the water tank intercommunication of apopore and casing below.

An observation window is arranged on the shell of the spraying layer.

3. Advantageous effects

Compared with the prior art, the utility model has the advantages of: the fermentation waste gas is efficiently and thoroughly purified through a flow stabilizing box, a gas-liquid separator, a primary condenser, a secondary condenser, a primary sodium hypochlorite spray tower, a secondary sodium hypochlorite spray tower, a primary alkaline washing tower and a sprayer; can realize up-and-down motion and rotary motion's shower in through one-level sodium hypochlorite spray column to the realization that can be better and the intensive mixing of fermentation tail gas, thereby realize high-efficient purification fermentation tail gas.

Drawings

FIG. 1 is a schematic view of the flow structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the primary sodium hypochlorite spray tower of the present invention;

FIG. 3 is an enlarged view of the point A of FIG. 2 according to the present invention;

FIG. 4 is an enlarged view of the point B in FIG. 2 according to the present invention;

fig. 5 is a cross-sectional view taken along line C-C of fig. 2 according to the present invention.

The numbering in the figures illustrates:

1. a flow stabilizing box; 2. a gas-liquid separator; 3. a first-stage condenser; 4. a secondary condenser; 5. a primary sodium hypochlorite spray tower; 6. a secondary sodium hypochlorite spray tower; 7. a primary alkaline washing tower; 8. a sprayer; 51. a housing; 52. an air outlet; 53. an air inlet; 54. a filter plate; 55. a motor; 56. a rotating shaft; 57. a filler layer; 58. a spray layer; 59. a stopper; 60. a shower pipe; 61. a spray nozzle; 62. a reciprocating screw rod; 63. a first stirring fan; 64. a second stirring fan; 65. a water outlet hole; 66. a water tank; 67. and (4) an observation window.

Detailed Description

The drawings in the embodiments of the present invention will be combined; the technical scheme in the embodiment of the utility model is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the present invention; rather than all embodiments. Based on the embodiment of the utility model; all other embodiments obtained by a person skilled in the art without making any inventive step; all belong to the protection scope of the utility model.

Example 1:

referring to fig. 1, a fermentation tail gas treatment device comprises a steady flow box 1, a gas-liquid separator 2, a first-stage condenser 3, a second-stage condenser 4, a first-stage sodium hypochlorite spray tower 5, a second-stage sodium hypochlorite spray tower 6, a first-stage alkaline tower 7 and a sprayer 8 which are connected in sequence.

The flow stabilizing box, the gas-liquid separator and the secondary condenser are pretreatment units for fermentation tail gas treatment, the condition that the tail gas amount is large under extreme conditions is considered, the over-high pressure in the pipe is avoided, the existing fermentation exhaust pipe is connected into the flow stabilizing box after being mixed, the gas-liquid separator can effectively intercept materials carried in the waste gas, the normal operation of a rear-end treatment facility is ensured, and the condenser mainly cools the mixed waste gas to a target temperature of 35 ℃.

And a differential pressure gauge is arranged in the gas-liquid separator 2 and used for monitoring pressure and timely cleaning equipment when the pressure value is abnormal.

One-level condenser 3 and second grade condenser 4 all adopt shell and tube heat exchanger, avoid waste gas to take the temperature to make sodium hypochlorite decompose, reduce the oxidation and get rid of efficiency, cause the waste of sodium hypochlorite medicament to and the peculiar smell scheduling problem that sodium hypochlorite decomposes the production.

Example 2:

the primary sodium hypochlorite spray tower 5 comprises a shell 51, wherein an air outlet 52 is formed in the top end of the shell 51, an air inlet 53 is formed in the bottom end of the shell, a filter plate 54 is arranged at the top end of the interior of the shell, a motor 55 is arranged above the filter plate 54, the motor 55 is connected with the top end of a rotating shaft 56, and the bottom end of the rotating shaft 56 is rotatably connected with the bottom end of the shell 51; a plurality of packing layers 57 are arranged below the filter plate 54, a spraying layer 58 is arranged between the two packing layers 57, a plurality of stop blocks 59 are uniformly arranged on the inner wall of the shell 51 of the spraying layer 58, a plurality of spraying pipes 60 are arranged above the spraying layer 58, a plurality of spraying nozzles 61 are arranged on the spraying pipes 60, the part of the rotating shaft 56 connected with the spraying pipes 60 is a reciprocating screw rod 62, and the end part of each spraying pipe 60 is positioned between the two stop blocks 59.

As shown in fig. 2, when fermentation tail gas enters from the gas inlet, the fermentation tail gas enters into the spraying layer 58 through the filler layer;

as shown in fig. 3-5, the motor 55 drives the rotating shaft to rotate, so as to drive the reciprocating screw rod 62 to rotate, when the reciprocating screw rod 62 starts to rotate, the spray pipe 60 is driven to rotate together by the reciprocating screw rod 62, namely the reciprocating screw rod 62 and the spray pipe 60 do not move relatively, as shown in fig. 5, when one end of the spray pipe 60 contacts with the stop block 59, the spray pipe does not rotate at this time, the spray pipe 60 moves upwards or downwards under the action of the reciprocating screw rod, and the spray water sprayed can cover the transverse section of the spray layer 58 through the rotation and the up-and-down movement of the spray pipe 60, so that the fermentation waste gas can be better mixed and contacted with the spray water, the spray water not only has a spraying effect, but also has a PH adjusting effect, the PH of the spray water is controlled within an alkaline range of 8 to 10, and the alkali spray removal effect is ensured; in addition, under the effect of reciprocal lead screw, when realizing that the shower rotates and up-and-down motion, can not make the inlet tube of connecting excessively twine on the shower.

Example 3:

the rotary shaft 56 below the shower pipe 60 is connected to a first stirring fan 63, and the rotary shaft 56 between the lowermost packing layer 57 and the air inlet 53 is connected to a second stirring fan 64.

As shown in fig. 2, the second stirring fan 64 can make the entering fermentation tail gas uniformly pass through the first packing layer, so that a large amount of fermentation tail gas can not enter the spraying layer 58 from the packing layer near one end of the air inlet;

as shown in fig. 4, the first stirring fan 63 can form a turbulent flow state of the fermentation exhaust gas entering the spraying layer 58 through the packing layer, and the fermentation exhaust gas in the turbulent flow state has a longer distance to pass through the spraying layer and takes too much time compared with the fermentation exhaust gas moving straight upward, so that the fermentation exhaust gas can be well mixed with the spraying water.

Example 4:

the bottom end of the shell 51 is provided with a plurality of water outlet holes 65, and the water outlet holes 65 are communicated with a water tank 66 below the shell 51. The housing 51 of the spray layer 58 is provided with an observation window 67. The waste water that sprays flows into water tank 66 through apopore 65, can observe the operating condition when the fermentation waste gas sprays through observation window 67 to and be convenient for discover the problem.

The above; is only a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto; any person skilled in the art is within the technical scope of the present disclosure; according to the technical scheme of the utility model and the improvement conception, equivalent substitution or change is carried out; are all covered by the protection scope of the present invention.

Claims

1. The utility model provides a fermentation tail gas processing apparatus which characterized in that: the device comprises a steady flow box (1), a gas-liquid separator (2), a first-stage condenser (3), a second-stage condenser (4), a first-stage sodium hypochlorite spray tower (5), a second-stage sodium hypochlorite spray tower (6), a first-stage alkaline tower (7) and a sprayer (8) which are connected in sequence.

2. The fermentation tail gas treatment device according to claim 1, characterized in that: and a differential pressure meter is arranged in the gas-liquid separator (2).

3. The fermentation tail gas treatment device according to claim 1, characterized in that: the primary condenser (3) and the secondary condenser (4) both adopt tube type heat exchangers.

4. The fermentation tail gas treatment device according to any one of claims 1 to 3, characterized in that: the primary sodium hypochlorite spray tower (5) comprises a shell (51), wherein an air outlet (52) is formed in the top end of the shell (51), an air inlet (53) is formed in the bottom end of the shell, a filter plate (54) is arranged at the top end inside the shell, a motor (55) is arranged above the filter plate (54), the motor (55) is connected with the top end of a rotating shaft (56), and the bottom end of the rotating shaft (56) is rotatably connected with the bottom end of the shell (51); a plurality of packing layers (57) are arranged below the filtering plate (54), a spraying layer (58) is arranged between the two packing layers (57), a plurality of stop blocks (59) are uniformly arranged on the inner wall of the shell (51) of the spraying layer (58), a plurality of spraying pipes (60) are arranged above the spraying layer (58), a plurality of spraying nozzles (61) are arranged on the spraying pipes (60), a reciprocating screw rod (62) is arranged at the part where the rotating shaft (56) and the spraying pipes (60) are connected, and the end part of each spraying pipe (60) is positioned between the two stop blocks (59).

5. The fermentation tail gas treatment device according to claim 4, characterized in that: a first stirring fan (63) is connected on the rotating shaft (56) below the spray pipe (60), and a second stirring fan (64) is connected on the rotating shaft (56) between the packing layer (57) at the lowest part and the air inlet (53).

6. The fermentation tail gas treatment device according to claim 4, wherein: the bottom end of the shell (51) is provided with a plurality of water outlet holes (65), and the water outlet holes (65) are communicated with a water tank (66) below the shell (51).

7. The fermentation tail gas treatment device according to claim 4, characterized in that: an observation window (67) is arranged on the shell (51) of the spraying layer (58).