CN217051889U - Movable chemical cleaning waste liquid treatment system for outer wall of furnace tube - Google Patents
Movable chemical cleaning waste liquid treatment system for outer wall of furnace tube Download PDFInfo
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- CN217051889U CN217051889U CN202220848464.8U CN202220848464U CN217051889U CN 217051889 U CN217051889 U CN 217051889U CN 202220848464 U CN202220848464 U CN 202220848464U CN 217051889 U CN217051889 U CN 217051889U
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- 239000007788 liquid Substances 0.000 title claims abstract description 150
- 239000002699 waste material Substances 0.000 title claims abstract description 112
- 238000004140 cleaning Methods 0.000 title claims abstract description 66
- 239000000126 substance Substances 0.000 title claims abstract description 65
- 238000000926 separation method Methods 0.000 claims abstract description 44
- 239000003814 drug Substances 0.000 claims abstract description 35
- 239000010865 sewage Substances 0.000 claims abstract description 35
- 239000007791 liquid phase Substances 0.000 claims abstract description 10
- 239000007790 solid phase Substances 0.000 claims abstract description 10
- 125000004122 cyclic group Chemical group 0.000 claims abstract description 9
- 238000004062 sedimentation Methods 0.000 claims abstract description 9
- 238000002347 injection Methods 0.000 claims description 17
- 239000007924 injection Substances 0.000 claims description 17
- 239000010802 sludge Substances 0.000 claims description 11
- 238000004064 recycling Methods 0.000 claims description 8
- 239000010963 304 stainless steel Substances 0.000 claims description 4
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 claims description 4
- 239000003607 modifier Substances 0.000 abstract description 16
- 239000002245 particle Substances 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 238000012986 modification Methods 0.000 abstract description 4
- 230000004048 modification Effects 0.000 abstract description 4
- 238000000746 purification Methods 0.000 abstract description 2
- 239000002910 solid waste Substances 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 7
- 239000003546 flue gas Substances 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 239000013049 sediment Substances 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 2
- 239000000701 coagulant Substances 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011790 ferrous sulphate Substances 0.000 description 1
- 235000003891 ferrous sulphate Nutrition 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 1
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 1
- 239000010808 liquid waste Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
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Abstract
The utility model relates to a portable boiler tube outer wall chemical cleaning waste liquid processing system, collect sedimentation system, first medicament dosing system, second kind medicament dosing system, solid-liquid separation system, cyclic utilization system including the waste liquid, this system is integral mobile device. The chemical cleaning waste liquid on the outer wall of the furnace tube is subjected to secondary sedimentation to remove particles with density higher than that of water, and then is pumped to a solid-liquid separation system through a sewage pump. Before solid-liquid separation, a waste liquid modifier is added, so that subsequent solid-waste separation is facilitated. After solid-liquid separation, the liquid phase is pumped into a cleaning tank by a sewage pump for cyclic utilization, and the solid phase is collected and then treated in a centralized way. Compared with the prior art, the invention utilizes an integrated treatment system combining sedimentation, modification and high-efficiency solid-liquid separation to efficiently treat chemical cleaning waste liquid on the outer wall of the furnace tube, realizes the purification, the cyclic utilization and the like of the waste liquid, and does not cause any influence on a sewage system; and the system is integrated integrally, can be moved on a vehicle and is convenient to use.
Description
Technical Field
The invention relates to the field of chemical cleaning of industrial heating equipment of petrochemical devices, in particular to a system for treating chemical cleaning waste liquid on the outer wall of a movable furnace tube and a using method thereof.
Background
In the petrochemical plant, there are many heating devices for heating materials, such as heating furnace, cracking furnace, converting furnace, waste heat boiler, coal economizer, preheater, etc. The medium in the furnace tube of the industrial heating equipment is material, and the medium on the outer wall is flue gas. Because the flue gas contains oil coke, carbon powder, sulfur, nitrogen, dust, corrosion products and other impurities, the outer wall of the furnace tube is easy to deposit dirt after the operation for a certain time, and the flue gas scaling is formed. After dirt is deposited on the outer wall of the furnace tube, great harm is caused to the operation of heating equipment: (1) when the scale on the surface of the furnace tube reaches a certain thickness, the heat transfer efficiency is reduced under the condition of unchanged effective heat load, so that the exhaust gas temperature is increased, and the thermal efficiency of the furnace is reduced; (2) when dirt is accumulated on the surface of the furnace tube, the flow area through which the flue gas flows is correspondingly reduced, the flow velocity of the flue gas is forced to be increased, the flow resistance of the flue gas is increased, and blowing-out and rush-repair are caused when the flow resistance is serious; (3) the outer wall of the furnace tube after scaling is easier to adsorb sulfuric acid vapor contained in the flue gas, and the corrosion of the surface of the furnace tube is aggravated. Finally, the tube wall of the furnace tube is gradually thinned, so that the perforation of the furnace tube causes safety accidents.
In order to remove the dirt on the outer wall of the furnace tube, a chemical cleaning method is usually adopted. After chemical cleaning, all kinds of dirt on the outer wall of the furnace tube are peeled off and finally dispersed in the cleaning solution. Currently, the part of the waste cleaning solution is mainly treated in a direct-discharge mode. Because the waste liquid contains various harmful components such as oil, carbon powder, ammonia nitrogen, silt and the like, the direct discharge has the following defects: (1) the waste liquid amount is large, and the impact on sewage is large; (2) the solid content in the waste liquid is higher, so that a sewage pipeline is blocked; (3) the components of the waste liquid are complex, and the shadow plays the operation of a sewage treatment plant.
With the increasing environmental protection requirements of countries and enterprises, the discharge of the cleaning waste liquid must meet the requirements of relevant water quality. Aiming at the treatment of chemical cleaning waste liquid on the outer wall of a furnace tube, no related technology exists in the market, so that the treatment of the waste liquid is difficult, and the safe and long-period production of enterprises is influenced.
Disclosure of Invention
The invention provides a mobile furnace tube outer wall chemical cleaning waste liquid treatment system and a use method thereof, aiming at solving the technical problems in the prior art.
The purpose of the invention can be realized by the following technical scheme:
the utility model provides a processing system of portable boiler tube outer wall chemical cleaning waste liquid, collects sedimentation system, first kind of medicament dosing system, second kind of medicament dosing system, solid-liquid separation system, cyclic utilization system including the waste liquid, this system is integral mobile device, its characterized in that: the waste liquid collecting and settling system is provided with a waste liquid inlet, and the first medicament adding system is connected with the waste liquid collecting and settling system; a cleaning waste liquid outlet of the waste liquid collecting and settling system is connected with a reaction tank of the solid-liquid separation system, and the reaction tank of the solid-liquid separation system is also connected with a second medicament adding system; the cleaning waste liquid outlet of the solid-liquid separation system is connected with a recycling system, and the recycling system is provided with a circulating liquid outlet.
The waste liquid collect the sedimentation system and divide into the two-stage, adopt the overflow plate in the middle of waste liquid first order and the second grade subsider, middle overflow plate adopts sawtooth and ripple formula mode, first order and second grade subsider bottom are equipped with the drain respectively.
The medicament adding system selects a medicament injection pump as a metering plunger pump.
The first medicament adding system comprises a first medicament tank and a first medicament injection pump, the first medicament tank is connected with the first medicament injection pump, and an outlet of the first medicament injection pump is connected with the waste liquid collecting and settling system; two modifiers can be added simultaneously, the adding points are respectively arranged, and the two modifiers cannot be added to one position at the same time.
The second medicament adding system comprises a second medicament tank and a second medicament injection pump, the second medicament tank is connected with the second medicament injection pump, and an outlet of the second medicament injection pump is connected with the reaction tank;
the solid-liquid separation system comprises a reaction tank, a solid-liquid separation device, a sewage tank and a sludge tank; the reaction tank is connected with a solid-liquid separation device, a solid phase outlet of the solid-liquid separation device is connected with a sludge tank, a liquid phase outlet of the solid-liquid separation device is connected with a sewage tank, and the sewage tank is connected with a waste liquid circulating pump.
The recycling system comprises a waste liquid circulating pump, a cleaning tank and a chemical cleaning pump; the waste liquid circulating pump export is connected with the washing tank, and washing tank and chemical cleaning pump access connection, chemical cleaning pump export with by cleaning equipment connection.
All the systems are connected by adopting 304 stainless steel pipes or pressure-resistant hoses.
All consumers were explosion proof, grade exdlibt 4.
All the systems are integrated on a platform, are movable and can be placed on a vehicle platform.
A using method of a mobile furnace tube outer wall chemical cleaning waste liquid treatment system comprises a waste liquid sedimentation collecting system, a medicament adding system, a solid-liquid separation system and a recycling system. The chemical cleaning waste liquid on the outer wall of the furnace tube is subjected to secondary sedimentation to remove particulate matters with density higher than that of water, and then is pumped to a solid-liquid separation system through a sewage pump. Before solid-liquid separation, a waste liquid modifier is added, so that subsequent solid-waste separation is facilitated. After solid-liquid separation, the liquid phase is pumped into a cleaning tank by a sewage pump for cyclic utilization, and the solid phase is collected and then treated in a centralized way. Compared with the prior art, the invention utilizes an integrated treatment system combining sedimentation, modification and high-efficiency solid-liquid separation to efficiently treat chemical cleaning waste liquid on the outer wall of the furnace tube, realizes purification, cyclic utilization and the like of the waste liquid, and does not cause any influence on a sewage system. In addition, the system is integrated integrally, can be moved on a vehicle and is convenient to use.
Preferably, the two-stage waste liquid collecting and settling system is characterized in that the medicament adding system is respectively provided with a medicament dissolving tank, and the top of the tank is provided with a turbine speed reduction stirrer. All the medicament feeding pumps are plunger metering pumps, and the flow regulation range is 10-120L/h.
Preferably, the adding positions of the two modifiers are that the adding point of the first medicament is in a pipeline, and the adding point of the second medicament is a reaction tank of a solid-liquid separation system.
Preferably, the solid-liquid separation system is one of a stacked screw type dehydrator, a centrifugal dehydrator and a filter-press type dehydrator.
Preferably, a filter is arranged in front of a sewage pump of the recycling system and used for filtering large-particle impurities.
Preferably, the pipeline connection between the systems adopts 304 stainless steel pipes and pressure-resistant hoses.
Preferably, all the electric equipment is explosion-proof and is of the grade ExdIIBT 4.
Preferably, the systems are connected to form a movable skid-mounted device.
Preferably, the system has a treatment capacity of 12-18m 3 /h。
Preferably, the use method is characterized by comprising the following steps;
(1) feeding the chemical cleaning waste liquid on the outer wall of the furnace tube into a first-stage settling tank to remove large-particle sediments;
(2) the effluent of the first-stage settling tank overflows into a second-stage settling tank to remove small-particle sediments;
(3) metering in a first spent liquor modifier;
(4) metering in a second waste liquor modifier;
(5) conveying the waste liquid to a solid-liquid separation system by using a sewage pump;
(6) after solid-liquid separation treatment, collecting a solid phase in a sludge tank, and collecting a liquid phase in a sewage tank;
(7) conveying the treated waste liquid to chemical cleaning equipment by using a sewage pump;
(8) the cleaning pump enables waste liquid generated after chemical cleaning on the top of the furnace tube of the sewage pump station to enter a first-stage settling tank.
Even more preferred.
In the steps (1) and (2), the treatment amount of the waste liquid is controlled to be less than 15m 3 /h；
In the step (3), the first waste liquid modifier is one or a combination of ferrous sulfate, PAFC and sodium hydroxide, the adding concentration is 0.1-50g/L, and the PH of the added waste liquid is not less than 7.0;
in the step (4), the second waste liquid modifier is a polymer coagulant aid, and the adding amount of the polymer coagulant aid is 1-400 mg/L;
in the step (5), the sewage pump is one of a submersible sewage pump, a centrifugal pump and a screw pump;
in the step (6), during the solid-liquid separation, the solid-liquid separation effect and efficiency can be controlled by adjusting the transmission, and the frequency of the frequency converter is less than 50 HZ;
and after the solid and liquid are separated, regularly removing sludge in the sludge tank, and controlling the cleaning time to be less than 2 h.
In the step (7), the sewage reuse pump can automatically adjust the position according to the service height of the sewage tank to prevent evacuation.
Compared with the prior art, the invention forms a set of complete chemical cleaning waste liquid treatment system for the outer wall of the furnace tube. The invention has the advantages that:
(1) the amount of waste liquid of chemical cleaning is reduced by 60%;
(2) after being treated by the system, the solid phase and the liquid phase are completely separated and respectively enter different systems without causing any influence;
(3) after the treatment of the system, the COD removal rate of the waste liquid is more than 90 percent, the color of the waste liquid is changed into light yellow or colorless, and the removal rate of suspended matters is more than 95 percent, so that the water quality requirement of entering a sewage plant is met;
(4) the processing system is convenient to move, simple to operate and high in automation degree.
Drawings
FIG. 1 is a schematic structural diagram of a system for treating chemical cleaning waste liquid on the outer wall of a moving furnace tube according to the present invention;
in the figure, 1-a primary settling tank, 2-a secondary settling tank, 3-a first chemical injection pump, 4-a first chemical tank, 5-a sewage pump, 6-a second chemical injection pump, 7-a second chemical tank, 8-a reaction tank, 9-a solid-liquid separation device, 10-a sewage tank, 11-a sludge tank, 12-a waste liquid circulation pump, 13-a chemical cleaning pump, 14-a cleaning tank, 15-an industrial heating device, and 16-a chemical cleaning waste liquid.
Detailed Description
The invention is described in detail below with reference to the figures and the specific embodiments.
A treatment system for chemical cleaning waste liquid on the outer wall of a movable furnace tube comprises a waste liquid collecting and settling systemThe system comprises a system, a first medicament dosing system, a second medicament dosing system, a solid-liquid separation system and a recycling system. The waste liquid is collected and is subsided the system and divide into the two-stage, and the first order is used for getting rid of the large granule deposit that density is greater than water, and the second level is used for getting rid of the small granule deposit that density is greater than water, adopts the overflow plate in the middle of waste liquid first order and the second season, and middle overflow plate adopts sawtooth and ripple formula mode, and first order and second level settling tank bottom are equipped with the drain respectively. The reagent adding system can simultaneously add two modifiers, wherein the first modifier is used for improving the surface tension of the waste liquid, and the second modifier is used for improving the surface charge of the waste liquid so as to be convenient for separation. The system selects the medicine injection pump as a metering plunger pump, and can accurately control the injection amount of the medicine. The medicament adding system can simultaneously add two modifiers, the two modifiers cannot be added to one position at the same time, adding points are required to be respectively set, and otherwise, the treatment effect is reduced. The solid-liquid separation system realizes the quick separation of the solid phase and the liquid phase of the waste liquid, the waste liquid enters the separation system after being modified, the solid phase enters a sludge tank, and the liquid phase enters a sewage tank. The recycling system continuously uses the treated waste liquid for cleaning the outer wall of the furnace tube and finally returns to the waste liquid collecting and settling system. The systems are connected by adopting 304 stainless steel pipes and pressure-resistant hoses. All consumers were explosion proof, grade exdlibt 4. The system is integrated on a platform to form an integral system. The system is mobile and can be arranged on a vehicle platform. The system has a throughput of 10-20m 3 /h。
The invention also provides a using method of the system, which comprises the following steps: (1) feeding the chemical cleaning waste liquid on the outer wall of the furnace tube into a first-stage settling tank to remove large-particle sediments; (2) the effluent of the first-stage settling tank overflows into a second-stage settling tank to remove small-particle sediments; (3) metering in a first spent liquor modifier; (4) metering in a second waste liquor modifier; (5) conveying the waste liquid to a solid-liquid separation system by using a sewage pump; (6) after solid-liquid separation treatment, collecting a solid phase in a sludge tank, and collecting a liquid phase in a sewage tank; (7) conveying the treated waste liquid to chemical cleaning equipment by using a sewage pump; (8) the cleaning pump is used for feeding waste liquid generated after chemical cleaning on the top of the furnace tube of the sewage pumping station into the first-stage settling tank.
Example 1
Chemical cleaning of the outer wall of a convection section finned tube of a 2016 long-ridge petrochemical overhaul and reformation four-in-one heating furnace, treatment of waste liquid in a direct discharging mode, 3 days of construction time, 6 hours per day and 18m of chemical cleaning flow 3 H, amount of waste liquid generated in co-production of 324m 3 And 0.5t of sediment.
The outer wall of the convection section finned tube of the reforming four-in-one heating furnace is chemically cleaned again by long-ridge petrochemical overhaul in 2020, the construction time is 3 days and 6 hours per day by adopting the waste liquid treatment system, and the chemical cleaning flow is 18m 3 H, co-producing waste liquor 113m 3 The reduction is 65%; COD2218mg/L before the treatment of the waste liquid, COD177mg/L after the treatment, and the removal rate is 92%; the color of the waste liquid is dark black before treatment, and is colorless after treatment; the content of suspended matters before the waste liquid treatment is 8789mg/L, the content after the waste liquid treatment is 350mg/L, and the removal rate is 97 percent. After the waste liquid is treated by the waste liquid system, all liquid phases are discharged to a sewage treatment plant, and 3t of solid phase is generated and sent to sludge drying treatment.
Example 2
The chemical cleaning of the outer wall of the waste heat boiler tube of a certain petrochemical company in Shanghai, wherein the dirt on the outer wall of the boiler tube mainly comprises catalyst dust and sulfide. The whole construction period is 48 hours, and the waste liquid treatment system is adopted. The flow of the treatment is controlled to be 12m due to the high solid content of the waste liquid 3 H is the ratio of the total weight of the catalyst to the total weight of the catalyst. If the direct discharge method is adopted, the amount of the waste liquid is 576m 3 (ii) a By adopting the waste liquid treatment system, the amount of the actually generated waste liquid is 172m 3 And the reduction is 70 percent. COD of treated effluent is reduced from 1500mg/L to 100mg/L, the content of suspended matters is reduced from 7658mg/L to 300mg/L, and the color of effluent is changed from mud grey to colorless.
Example 3
The chemical cleaning of the outer wall of the convection section furnace tube of the olefin cracking furnace of Tianjin petrochemical company has the dirt of the outer wall of the furnace tube mainly comprising dust, sulfide, oil coke and carbon powder, and basically covers the outer wall of the furnace tube. Because the first prescription has high requirements on environmental protection, the waste liquid can be discharged to a sewage treatment plant after being pretreated. The whole construction period is 24 hours, and continuous operation is realized. Because the waste liquid suspended matter is higher, and the carbon powder in the suspended matter is the main, basically float on the top. With this liquid waste treatment system, this treatment flowThe amount is controlled at 15m 3 Per h, 360m is theoretically required 3 Waste liquid, the amount of the actually produced waste liquid is 110m 3 And the reduction is 71 percent. The COD of the treated effluent is reduced from 889mg/L to 50mg/L, the content of suspended matters is reduced from 10437mg/L to 500mg/L, and the color of the effluent is changed from black to light yellow.
It should be noted that the above-mentioned embodiments are only for explaining the present invention, and do not constitute any limitation to the present invention. The present invention has been described with reference to exemplary embodiments, but the words which have been used herein are words of description and illustration, rather than words of limitation. Modifications may be made to the invention as defined within the scope of the claims and modifications may be made without departing from the scope and spirit of the invention. Although the invention has been described herein with reference to particular means, materials and embodiments, the invention is not intended to be limited to the particulars disclosed herein, but rather extends to all other methods and applications having the same functionality.
Claims (10)
1. The utility model provides a processing system of portable boiler tube outer wall chemical cleaning waste liquid, collects sedimentation system, first kind of medicament dosing system, second kind of medicament dosing system, solid-liquid separation system, cyclic utilization system including the waste liquid, this system is integral mobile device, its characterized in that: the waste liquid collecting and settling system is provided with a waste liquid inlet, and the first medicament adding system is connected with the waste liquid collecting and settling system; a cleaning waste liquid outlet of the waste liquid collecting and settling system is connected with a reaction tank of the solid-liquid separation system, and the reaction tank of the solid-liquid separation system is also connected with a second medicament adding system; the solid-liquid separation system washs the waste liquid export and is connected with cyclic utilization system, and cyclic utilization system is equipped with the recycle liquid export.
2. The system for treating chemical cleaning waste liquid on the outer wall of the movable furnace tube according to claim 1, wherein the waste liquid collecting and settling system is divided into two stages, an overflow plate is adopted between a first stage settling tank and a second stage settling tank of the waste liquid, the middle overflow plate adopts a sawtooth and ripple type mode, and the bottoms of the first stage settling tank and the second stage settling tank are respectively provided with a sewage outlet.
3. The system for treating chemical cleaning waste liquid on the outer wall of the movable furnace tube according to claim 1, wherein the chemical dosing system adopts a dosing pump as a metering plunger pump.
4. The system for treating chemical cleaning waste liquid on the outer wall of a moving furnace tube according to claim 1, wherein the first chemical adding system comprises a first chemical tank and a first chemical injection pump, the first chemical tank is connected with the first chemical injection pump, and the outlet of the first chemical injection pump is connected with the waste liquid collecting and settling system.
5. The system for treating chemical cleaning waste liquid on the outer wall of a moving furnace tube according to claim 1, wherein the second chemical dosing system comprises a second chemical tank and a second chemical injection pump, the second chemical tank is connected with the second chemical injection pump, and the outlet of the second chemical injection pump is connected with the reaction tank.
6. The system for treating chemical cleaning waste liquid on the outer wall of the movable furnace tube according to claim 1, wherein the solid-liquid separation system comprises a reaction tank, a solid-liquid separation device, a sewage tank and a sludge tank; the reaction tank is connected with a solid-liquid separation device, a solid phase outlet of the solid-liquid separation device is connected with a sludge tank, a liquid phase outlet of the solid-liquid separation device is connected with a sewage tank, and the sewage tank is connected with a waste liquid circulating pump.
7. The system for treating chemical cleaning waste liquid on the outer wall of a moving furnace tube according to claim 1, wherein the recycling system comprises a waste liquid circulating pump, a cleaning tank and a chemical cleaning pump; the outlet of the waste liquid circulating pump is connected with the cleaning tank, the cleaning tank is connected with the inlet of the chemical cleaning pump, and the outlet of the chemical cleaning pump is connected with a cleaned device.
8. The system for treating chemical cleaning waste liquid on the outer wall of a moving furnace tube of claim 1, wherein the systems are connected by using 304 stainless steel tubes or pressure hoses.
9. The system for treating chemical cleaning waste liquid on the outer wall of the movable furnace tube according to claim 1, wherein all electric equipment is explosion-proof and is ExdIIBT4 grade.
10. The system for treating chemical cleaning waste liquid on the outer wall of a moving furnace tube of claim 1, wherein all the systems are integrated on a platform, are moving and can be placed on a vehicle platform.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220848464.8U CN217051889U (en) | 2022-04-13 | 2022-04-13 | Movable chemical cleaning waste liquid treatment system for outer wall of furnace tube |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220848464.8U CN217051889U (en) | 2022-04-13 | 2022-04-13 | Movable chemical cleaning waste liquid treatment system for outer wall of furnace tube |
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| CN217051889U true CN217051889U (en) | 2022-07-26 |
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| CN202220848464.8U Active CN217051889U (en) | 2022-04-13 | 2022-04-13 | Movable chemical cleaning waste liquid treatment system for outer wall of furnace tube |
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