CN203346105U - Pulping wastewater treatment device - Google Patents
Pulping wastewater treatment device Download PDFInfo
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- CN203346105U CN203346105U CN 201320392221 CN201320392221U CN203346105U CN 203346105 U CN203346105 U CN 203346105U CN 201320392221 CN201320392221 CN 201320392221 CN 201320392221 U CN201320392221 U CN 201320392221U CN 203346105 U CN203346105 U CN 203346105U
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- waste
- waste liquid
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- waste liquor
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Abstract
The utility model provides a pulping wastewater treatment device. The device comprises a pulping waste liquor tank, a semi-concentrated waste liquor tank, a waste liquor pump, a mixed waste liquor tank, an evaporation device and a soda recovery furnace, wherein the pulping waste liquor tank is used for containing pulping waste liquor; the semi-concentrated waste liquor tank is used for containing concentrated pulping waste liquor; the waste liquor pump is used for mixing waste liquor in the pulping waste liquor tank with waste liquor in the semi-concentrated waste liquor tank; an inlet of the waste liquor pump is connected with the pulping waste liquor tank and the semi-concentrated waste liquor tank; the mixed waste liquor tank is connected with an outlet of the waste liquor pump and is used for containing waste liquor flowing out from the waste liquor pump; the evaporation device is connected with an outlet of the mixed waste liquor tank, is used for concentrating waste liquor output from the mixed waste liquor tank and is provided with two outlets, one of which is connected with an inlet of the semi-concentrated waste liquor tank; the soda recovery furnace is connected with the other outlet of the evaporation device and is used for burning waste liquor concentrated by the evaporation device. The device has the beneficial effects that the concentration meets the requirement by firstly concentrating the pulping waste liquor into semi-concentrated waste liquor and then mixing the semi-concentrated waste liquor with pulping wastewater.
Description
Technical field
The utility model relates to a kind for the treatment of unit of pulp-making waste-water.
Background technology
Pulp-making waste-water (Heisui River) derives from chip washing, the overflow of polydisc clear filtrate, screw extrusion press extruding filtrate, screw extrusion press wash filtrate and waste residue and reclaims the composite waste of a plurality of workshop sections such as filtrate.The treatment process of pulp-making waste-water is sent into the alkali recovery furnace burning after normally it being condensed into to dense waste liquid.Also need to use evaporation unit in this treatment process, the Main Function of this evaporation unit is the concentrating spent liquor that the Waste water concentrating that will produce in pulping process becomes the required certain concentration of alkali recovery boiler (as 60% ~ 70%).The concentration deficiency of concentrating spent liquor will cause the abnormal combustion of alkali recovery furnace.A certain amount of steam can only evaporate a certain amount of water, under same quantity of steam, the concentration of the concentrating spent liquor of pulping waste liquor concentration evaporation unit not up to standard output can not be up to standard, so evaporation unit has certain limitation (as solid containing requiring 2% ~ 5%) to the concentration of the waste liquid that enters evaporation unit.
Yet, the concentration of the pulp-making waste-water at different sources place is not to keep constant, but often change, cause its concentration of pulp-making waste-water mixed to have certain fluctuation, the variation of concentration can be reflected to the variation of the boiling point of waste water, thereby cause the unstable of evaporation concentration workshop section, the concentrated pulp-making waste-water that finally makes evaporation unit produce can't reach the required certain concentration of alkali recovery boiler, on the operation existence impact of alkali recovery furnace.
The utility model content
In view of above situation, be necessary to provide a kind for the treatment of unit of the pulp-making waste-water that can effectively address the above problem.
A kind for the treatment of unit of pulp-making waste-water, it comprises:
The pulping waste liquor groove, in order to accommodating pulping waste liquor;
Half dense waste liquid tank, in order to the pulping waste liquor after accommodating concentrating;
Waste drains pump, mix in order to the waste liquid in the waste liquid by the pulping waste liquor groove and half dense waste liquid tank, and the entrance of this waste drains pump connects pulping waste liquor groove and half dense waste liquid tank;
The mixed waste liquor groove, it connects the waste liquid pump outlet, in order to the waste liquid flowed out in accommodating waste drains pump;
Evaporation unit, the outlet that it connects the mixed waste liquor groove, concentrated in order to the waste liquid to exporting from the mixed waste liquor groove, and this evaporation unit is provided with two outlets, and wherein an outlet connects the entrance of half dense waste liquid tank;
Alkali recovery furnace, it connects another outlet of this evaporation unit, in order to the waste liquid after concentrated to evaporation unit, is burnt.
Preferably, between this pulping waste liquor groove and waste drains pump, be provided with the first valve, with the waste liquid of controlling the pulping waste liquor groove, can flow into or not flow in waste drains pump; Partly between dense waste liquid tank and waste drains pump, be provided with the second valve, can flow into or not flow in waste drains pump with the waste liquid of controlling half dense waste liquid tank.
Preferably, this first valve is switch-valve, and this second valve is that the flowrate control valve that carries Controlling System flows into the uninterrupted of waste drains pump with the waste liquid of controlling half dense waste liquid tank; Carry out the concentration detection to should the mixed waste liquor groove being provided with the second concentration detector with the waste liquid in the mixed waste liquor groove, this second valve and this second concentration detector are electrically connected and are set to a closed loop automatic control system, make this second valve regulate the flow of the waste liquid of half dense waste liquid tank according to the detected result of the second concentration detector; This second concentration detector has preset a threshold concentration, and the concentration that monitors waste liquid in the mixed waste liquor groove when this second concentration detector is less than threshold concentration, and the second valve regulated increases the flow of half dense waste liquid; The concentration that monitors waste liquid in the mixed waste liquor groove when this second concentration detector is greater than threshold concentration, and the second valve regulated reduces the flow of half dense waste liquid.
Preferably, this second concentration detector is refractometer.
Preferably, this evaporation unit is provided with the first concentration detector the waste liquid after concentrated in evaporation unit is carried out to the concentration detection, in corresponding two exits that connect alkali recovery furnace and half dense waste liquid tank of evaporation unit, the first switch-valve and second switch valve is set respectively.
Preferably, this first switch-valve, second switch valve are the switch-valve with Controlling System, this first switch-valve, second switch valve and this first concentration detector are electrically connected and form a closed loop automatic control system, make the first switch-valve and second switch valve carry out opening and closing according to the detected result of this first concentration detector; This first concentration detector has preset a threshold concentration scope, the concentration range that this threshold concentration scope is the alkali recovery furnace requirement, the concentration detected when the first concentration detector is arranged in the threshold concentration scope, the first switch-valve is opened, the second switch valve cuts out, and the waste liquid after concentrating in evaporation unit flows into alkali recovery furnace; The concentration detected when the first concentration detector is outside the threshold concentration scope, and the second switch valve is opened, and the first switch-valve cuts out, and the waste liquid after concentrated in evaporation unit flows into half dense waste liquid tank.
Preferably, this first concentration detector is refractometer.
Preferably, should half dense waste liquid tank with the second valve between also be connected with half dense pump, should half dense pump lift need meet the liquid level that the needs that waste liquid is sent into to the mixed waste liquor groove are greater than pulping waste liquor groove maximum simultaneously.
The utility model is condensed into certain density waste liquid in advance by the pulping waste liquor that concentration is not up to standard, then, by this concentrating spent liquor and pulp-making waste-water blending, forms the waste liquid that concentration meets the demands substantially.This treatment unit is simple in structure, is easy to realize.
The accompanying drawing explanation
The schematic diagram of the treatment unit that Fig. 1 is the utility model preferred embodiment.
The main element nomenclature
| Treatment unit | 100 |
| The pulping waste liquor groove | 10 |
| The first valve | 11 |
| Half dense waste liquid tank | 20 |
| Half dense pump | 21 |
| The second valve | 23 |
| Waste drains pump | 30 |
| The mixed waste liquor groove | 40 |
| The second concentration detector | 41 |
| Evaporation unit | 50 |
| The first concentration detector | 51 |
| The first switch-valve | 53 |
| The second switch valve | 55 |
| Alkali recovery furnace | 70 |
Following embodiment further illustrates the utility model in connection with above-mentioned accompanying drawing.
Embodiment
Refer to Fig. 1, the treatment unit 100 of the utility model preferred embodiment pulp-making waste-water comprises pulping waste liquor groove 10, half dense waste liquid tank 20, waste drains pump 30, mixed waste liquor groove 40, evaporation unit 50 and alkali recovery furnace 70.
Be equipped with pulping waste liquor in this pulping waste liquor groove 10.Should in half dense waste liquid tank 20, be equipped with concentrated pulping waste liquor (hereinafter to be referred as half dense waste liquid), should half dense waste liquid be after evaporation unit 50 is concentrated in advance, and concentration is up to standard and can't directly send into the pulping waste liquor that alkali recovery furnace 70 is burnt.
This waste drains pump 30 is in order to mix two kinds of waste liquids from this pulping waste liquor groove 10 and half dense waste liquid tank 20.The entrance of this waste drains pump 30 connects described pulping waste liquor groove 10 and half dense waste liquid tank 20, and the outlet of this waste drains pump 30 connects the entrance of described mixed waste liquor groove 40.
This mixed waste liquor groove 40, in order to the accommodating mixed waste liquid flowed out from waste drains pump 30, the outlet of this mixed waste liquor groove 40 connects the entrance of described evaporation unit 50.
This evaporation unit 50 is in order to waste liquid is carried out to evaporation concentration, and this evaporation unit 50 is provided with two outlets, and wherein an outlet connects described alkali recovery furnace 70, and another outlet connects the entrance of described half dense waste liquid tank 20.
When not enough, the pulping waste liquor in pulping waste liquor groove 10 is only arranged when half dense waste liquid, unstable because of its concentration, directly enter the input requirements that alkali recovery furnace 70 is difficult to meet alkali recovery furnace 70 after entering evaporation unit 50 evaporation concentration.Now, the pulping waste liquor in pulping waste liquor groove 10 can be flowed into to evaporation unit 50 and concentrates in advance through waste drains pump 30, mixed waste liquor groove 40, flow into again after concentrating in half dense waste liquid tank 20 to supplement half dense waste liquid.
When half dense waste liquid abundance, half dense waste liquid blending according to a certain percentage in pulping waste liquor in pulping waste liquor groove 10 and half dense waste liquid tank 20, then mix to reach the desired concn demand through waste drains pump 30, mixed waste liquor groove 40 together, flow into evaporation unit 50 again and concentrated, the waste liquid after concentrating is delivered to alkali recovery furnace 70 burnings.If the liquid waste concentration mixed through mixed waste liquor groove 40 does not still meet the demand of evaporation unit 50, be also not reach the requirement entered in alkali recovery furnace 70 after evaporation unit 50 evaporation concentration, after evaporation unit 50 is concentrated, deliver to again half dense waste liquid tank 20, the use of half dense waste liquid as a supplement.
Waste liquid inflow half dense waste liquid tank 20 after concentrated for evaporation unit 50 still flows into alkali recovery furnace 70 and can realize by following mode: the waste liquid arranged in 51 pairs of evaporation units 50 of the first concentration detector after concentrating carries out the concentration detection, at the corresponding alkali recovery furnace 70 that connects of evaporation unit 50, with two exits of half dense waste liquid tank 20, the first switch-valve 53 and second switch valve 55 is set respectively.In the present embodiment, this first concentration detector 51 is refractometer.
First kind of way: this first switch-valve 53, second switch valve 55 are the switch-valve of manual control, when detecting concentration, this first concentration detector 51 meets the concentration range that alkali recovery furnace 70 requires, open the first switch-valve 53, close second switch valve 55, the waste liquid after concentrating in evaporation unit 50 flows into alkali recovery furnace 70; When concentration being detected outside the threshold concentration scope, open second switch valve 55, close the first switch-valve 53, the waste liquid after concentrating in evaporation unit 50 flows into half dense waste liquid tank 20.
The second way: this first switch-valve 53, second switch valve 55 are the switch-valve that carries Controlling System, and be electrically connected and form a closed loop automatic control system with this first concentration detector 51, make the first switch-valve 53 and second switch valve 55 carry out opening and closing according to the detected result of this first concentration detector 51.Be specially: this first concentration detector 51 presets a threshold concentration scope (meeting the concentration range that alkali recovery furnace 70 requires), when detecting concentration, this first concentration detector 51 is arranged in the threshold concentration scope, the first switch-valve 53 is opened, second switch valve 55 cuts out, and the waste liquid after concentrating in evaporation unit 50 flows into alkali recovery furnace 70; When concentration being detected outside the threshold concentration scope, second switch valve 55 is opened, and the first switch-valve 53 cuts out, and the waste liquid after concentrating in evaporation unit 50 flows into half dense waste liquid tank 20.
Be provided with the first valve 11 between this pulping waste liquor groove 10 and waste drains pump 30, with the waste liquid of controlling pulping waste liquor groove 10, can flow into or not flow in waste drains pump 30.Partly between dense waste liquid tank 20 and waste drains pump 30, be provided with the second valve 23, with the waste liquid waste liquid of controlling half dense waste liquid tank 20, can flow into or not flow in waste drains pump 30.
For realizing that mixed waste liquor groove 40 obtains the waste liquid that concentration meets the demands, and can realize in the following manner.
This first valve 11 is switch-valve, and the second valve 23, for carrying the flowrate control valve of Controlling System, flows into the size of the flow of waste drains pump 30 with the waste liquid of controlling half dense waste liquid tank 20; Be provided with the second concentration detector 41 simultaneously in this mixed waste liquor groove 40 and carry out the concentration detection with the waste liquid in mixed waste liquor groove 40.This second valve 23 and this second concentration detector 41 are electrically connected and form a closed loop automatic control system, make this second valve 23 regulate the flow of half dense waste liquid according to the detected result of the second concentration detector 41.Be specially: this second concentration detector 41 has preset a threshold concentration C, and the concentration that monitors waste liquid in mixed waste liquor groove 40 when this second concentration detector 41 is less than threshold concentration C, and the second valve 23 is regulated the flow that increases half dense waste liquid; The concentration that monitors waste liquid in mixed waste liquor groove 40 when this second concentration detector 41 is greater than threshold concentration C, and the second valve 23 is regulated the flow that reduces half dense waste liquid.So, can realize accurately the concentration of the waste liquid in mixed waste liquor groove 40.In the present embodiment, this second concentration detector 41 is refractometer.
Understandable, should half dense waste liquid tank 20 with the second valve 23 between also be connected with half dense pump 21, lift that should half dense pump 21 (useful energy that unit weight liquid is flowed through after pump and obtained) needs the satisfied needs that waste liquid is sent into to mixed waste liquor groove 40 to be greater than the liquid level of pulping waste liquor groove 10 maximums simultaneously.Should can guarantee, when pulping waste liquor tank liquor position is the highest, half dense waste liquid tank liquid level approaches in minimum situation, the situation that pulping waste liquor flows backward to half dense waste liquid tank 20 not to occur by half dense pump 21.
Below further introduce the method for work of the treatment unit 100 of this pulp-making waste-water, it comprises:
Half dense waste liquid in half dense waste liquid tank 20 is when inadequate, it specifically comprises the steps: to open the first valve 11 makes in this pulping waste liquor groove 10 pulping waste liquor successively through waste drains pump 30 and mixed waste liquor groove 40, then flow in evaporation unit 50 and concentrated, concentrated rear waste liquid is delivered in half dense waste liquid tank 20.
When the partly dense waste liquid in half dense waste liquid tank 20 is sufficient, it specifically comprises the steps:
Step S1: open the first valve 11 and the second valve 23, pulping waste liquor in this pulping waste liquor groove 10 is mixed through waste drains pump 30 with the half dense waste liquid that is somebody's turn to do half dense waste liquid tank 20, then flow in mixed waste liquor groove 40 from waste drains pump 30.
Step S2: the waste liquid in the second 41 pairs of concentration detectors mixed waste liquor groove 40 carries out the concentration detection, and the concentration that monitors waste liquid in mixed waste liquor groove 40 when this second concentration detector 41 is less than threshold concentration C, and the second valve 23 is regulated the flow that increases half dense waste liquid; The concentration that monitors waste liquid in mixed waste liquor groove 40 when this second concentration detector 41 is greater than threshold concentration C, and the second valve 23 is regulated the flow that reduces half dense waste liquid.
Step S3: the waste liquid in mixed waste liquor groove 40 flows into evaporation unit 50 and is concentrated.
Step S4: deliver to alkali recovery furnace 70 burnings if the waste liquid concentration after evaporation unit 50 concentrates meets the requirement of alkali recovery furnace 70, deliver to half dense waste liquid tank 20 if concentration does not meet the requirement of alkali recovery furnace 70.
Treatment unit 100 of the present utility model, be condensed into half dense waste liquid in advance by the pulping waste liquor that concentration is not up to standard, then by half dense waste liquid and pulp-making waste-water blending, and formation concentration meets the demands substantially advances to imitate waste liquid.This treatment unit 100 is simple in structure, is easy to realize, and can realizes that the concentration of automatically controlling the waste liquid in mixed waste liquor groove 40 is in the scope of needs, and the operation of steady-state evaporation device 50, be conducive to the lifting of evaporation unit 50 efficiency.
In addition, those skilled in the art also can make various modifications, interpolation and the replacement on other form and details in the utility model claim scope of disclosure and spirit.Certainly, the variations such as various modifications, interpolation and replacement that these are made according to the utility model spirit, within all should being included in the utility model scope required for protection.
Claims (8)
1. the treatment unit of a pulp-making waste-water, it is characterized in that: this treatment unit comprises:
The pulping waste liquor groove, in order to accommodating pulping waste liquor;
Half dense waste liquid tank, in order to the pulping waste liquor after accommodating concentrating;
Waste drains pump, mix in order to the waste liquid in the waste liquid by the pulping waste liquor groove and half dense waste liquid tank, and the entrance of this waste drains pump connects pulping waste liquor groove and half dense waste liquid tank;
The mixed waste liquor groove, it connects the waste liquid pump outlet, in order to the waste liquid flowed out in accommodating waste drains pump;
Evaporation unit, the outlet that it connects the mixed waste liquor groove, concentrated in order to the waste liquid to exporting from the mixed waste liquor groove, and this evaporation unit is provided with two outlets, and wherein an outlet connects the entrance of half dense waste liquid tank;
Alkali recovery furnace, it connects another outlet of this evaporation unit, in order to the waste liquid after concentrated to evaporation unit, is burnt.
2. treatment unit as claimed in claim 1, is characterized in that: be provided with the first valve between this pulping waste liquor groove and waste drains pump, with the waste liquid of controlling the pulping waste liquor groove, can flow into or not flow in waste drains pump; Partly between dense waste liquid tank and waste drains pump, be provided with the second valve, can flow into or not flow in waste drains pump with the waste liquid of controlling half dense waste liquid tank.
3. treatment unit as claimed in claim 2, it is characterized in that: this first valve is switch-valve, this second valve is that the flowrate control valve that carries Controlling System flows into the uninterrupted of waste drains pump with the waste liquid of controlling half dense waste liquid tank; Carry out the concentration detection to should the mixed waste liquor groove being provided with the second concentration detector with the waste liquid in the mixed waste liquor groove, this second valve and this second concentration detector are electrically connected and are set to a closed loop automatic control system, make this second valve regulate the flow of the waste liquid of half dense waste liquid tank according to the detected result of the second concentration detector; This second concentration detector has preset a threshold concentration, and the concentration that monitors waste liquid in the mixed waste liquor groove when this second concentration detector is less than threshold concentration, and the second valve regulated increases the flow of half dense waste liquid; The concentration that monitors waste liquid in the mixed waste liquor groove when this second concentration detector is greater than threshold concentration, and the second valve regulated reduces the flow of half dense waste liquid.
4. treatment unit as claimed in claim 3, it is characterized in that: this second concentration detector is refractometer.
5. treatment unit as claimed in claim 1, it is characterized in that: this evaporation unit is provided with the first concentration detector the waste liquid after concentrated in evaporation unit is carried out to the concentration detection, in corresponding two exits that connect alkali recovery furnace and half dense waste liquid tank of evaporation unit, the first switch-valve and second switch valve is set respectively.
6. treatment unit as claimed in claim 5, it is characterized in that: this first switch-valve, second switch valve are the switch-valve with Controlling System, this first switch-valve, second switch valve and this first concentration detector are electrically connected and form a closed loop automatic control system, make the first switch-valve and second switch valve carry out opening and closing according to the detected result of this first concentration detector; This first concentration detector has preset a threshold concentration scope, the concentration range that this threshold concentration scope is the alkali recovery furnace requirement, the concentration detected when the first concentration detector is arranged in the threshold concentration scope, the first switch-valve is opened, the second switch valve cuts out, and the waste liquid after concentrating in evaporation unit flows into alkali recovery furnace; The concentration detected when the first concentration detector is outside the threshold concentration scope, and the second switch valve is opened, and the first switch-valve cuts out, and the waste liquid after concentrated in evaporation unit flows into half dense waste liquid tank.
7. treatment unit as claimed in claim 5, it is characterized in that: this first concentration detector is refractometer.
8. treatment unit as claimed in claim 1, it is characterized in that: should half dense waste liquid tank with the second valve between also be connected with half dense pump, should half dense pump lift need meet the liquid level that the needs that waste liquid is sent into to the mixed waste liquor groove are greater than pulping waste liquor groove maximum simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320392221 CN203346105U (en) | 2013-07-03 | 2013-07-03 | Pulping wastewater treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320392221 CN203346105U (en) | 2013-07-03 | 2013-07-03 | Pulping wastewater treatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203346105U true CN203346105U (en) | 2013-12-18 |
Family
ID=49746029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320392221 Expired - Fee Related CN203346105U (en) | 2013-07-03 | 2013-07-03 | Pulping wastewater treatment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203346105U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103318980A (en) * | 2013-07-03 | 2013-09-25 | 金东纸业（江苏）股份有限公司 | Processing device and processing method of pulping waste water |
| CN109781468A (en) * | 2017-11-13 | 2019-05-21 | 恒天纤维集团有限公司 | A method of dense solvent sample detection point is evaporated by setting and accurately detects evaporation exit concentration |
| CN111692379A (en) * | 2014-09-16 | 2020-09-22 | 夏立军 | System for be used for handling waste material |
-
2013
- 2013-07-03 CN CN 201320392221 patent/CN203346105U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103318980A (en) * | 2013-07-03 | 2013-09-25 | 金东纸业（江苏）股份有限公司 | Processing device and processing method of pulping waste water |
| CN103318980B (en) * | 2013-07-03 | 2014-08-20 | 金东纸业（江苏）股份有限公司 | Processing device and processing method of pulping waste water |
| CN111692379A (en) * | 2014-09-16 | 2020-09-22 | 夏立军 | System for be used for handling waste material |
| CN111692379B (en) * | 2014-09-16 | 2022-06-10 | 夏立军 | System for be used for handling waste material |
| CN109781468A (en) * | 2017-11-13 | 2019-05-21 | 恒天纤维集团有限公司 | A method of dense solvent sample detection point is evaporated by setting and accurately detects evaporation exit concentration |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131218 Termination date: 20150703 |
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| EXPY | Termination of patent right or utility model |