CN109530332B - High tower equipment cleaning water recycling system and recycling method thereof - Google Patents
High tower equipment cleaning water recycling system and recycling method thereof Download PDFInfo
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- CN109530332B CN109530332B CN201811554583.7A CN201811554583A CN109530332B CN 109530332 B CN109530332 B CN 109530332B CN 201811554583 A CN201811554583 A CN 201811554583A CN 109530332 B CN109530332 B CN 109530332B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 200
- 238000004140 cleaning Methods 0.000 title claims abstract description 71
- 238000004064 recycling Methods 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000005406 washing Methods 0.000 claims abstract description 59
- 239000007788 liquid Substances 0.000 claims abstract description 57
- 238000003825 pressing Methods 0.000 claims abstract description 53
- 230000007797 corrosion Effects 0.000 claims abstract description 51
- 238000005260 corrosion Methods 0.000 claims abstract description 51
- 238000001914 filtration Methods 0.000 claims abstract description 49
- 238000005507 spraying Methods 0.000 claims abstract description 40
- 238000003860 storage Methods 0.000 claims abstract description 34
- 238000011010 flushing procedure Methods 0.000 claims abstract description 20
- 238000002791 soaking Methods 0.000 claims abstract description 20
- 239000010865 sewage Substances 0.000 claims description 46
- 239000000706 filtrate Substances 0.000 claims description 33
- 239000002351 wastewater Substances 0.000 claims description 24
- 238000004519 manufacturing process Methods 0.000 claims description 16
- 238000002844 melting Methods 0.000 claims description 8
- 230000008018 melting Effects 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 7
- 239000011152 fibreglass Substances 0.000 claims description 2
- 239000007787 solid Substances 0.000 abstract description 9
- 239000000463 material Substances 0.000 description 13
- 238000005469 granulation Methods 0.000 description 9
- 230000003179 granulation Effects 0.000 description 9
- 230000008901 benefit Effects 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 239000000428 dust Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000003337 fertilizer Substances 0.000 description 6
- 125000004122 cyclic group Chemical group 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 238000004806 packaging method and process Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000004537 pulping Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 239000008399 tap water Substances 0.000 description 3
- 235000020679 tap water Nutrition 0.000 description 3
- 239000002023 wood Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000003750 conditioning effect Effects 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 239000012065 filter cake Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000012798 spherical particle Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 206010027339 Menstruation irregular Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 238000011086 high cleaning Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005580 one pot reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
- B08B3/14—Removing waste, e.g. labels, from cleaning liquid; Regenerating cleaning liquids
Landscapes
- Filtration Of Liquid (AREA)
Abstract
The invention relates to a high tower equipment cleaning water recycling system and a recycling method thereof. The on-tower filtering and storing circulating subsystem comprises an on-tower high-level water tank, a first coarse filter, a first filter press, a first filter water tank, a blue spraying soaking tank and a blue spraying flushing tank which are all arranged on the high tower. The under-tower filtering, storing and recycling subsystem comprises an under-tower dirt collecting tank, a second coarse filter, a second filter press, a second filter tank, a storage tank, a corrosion-resistant high-pressure pump and a tail gas washing tank which are all arranged under the high tower. The first coarse filter can preliminarily filter out larger solids in the cleaning water, then the first coarse filter is subjected to secondary filter pressing through the first filter press, and the generated filter pressing liquid is stored in the first filter tank so as to be used by a high-level water tank on the tower, thereby realizing the preliminary recycling of the cleaning water. The sub-system for filtering, storing and recycling under the tower fully utilizes the cleaning water again, so that the cleaning cost of high tower equipment is reduced.
Description
Technical Field
The invention relates to a water recycling method in the technical field of production equipment of agricultural compound fertilizers, in particular to a cleaning water recycling system of high tower equipment and a cleaning water recycling method of the high tower equipment.
Background
The production process of high tower compound fertilizer is that various basic fertilizers are mixed and pulped under stirring and melting, and sprayed into an air cooling tower to be cooled, crystallized and granulated. The core of the high tower compound fertilizer process is a pulping process on a tower, and in order to ensure efficient and smooth pulping, effective heat transfer of a heating coil must be ensured.
A small amount of materials can be adhered to the heating coil of each stirring pot after production shutdown and discharging, and the heat efficiency is seriously affected by scale formation for a long time, so that the steam consumption is increased. Therefore, in order to improve the heat efficiency, the cleaning is required to be arranged every time the machine is stopped, but the operation space is small, the manual cleaning difficulty is high and the machine is unsafe, only a water washing method is adopted, of course, the machine is cleaned by a high-pressure water gun, the water consumption is greatly reduced, but the cleaning window is small because the stirring pot is under airtight condition, and the cleaning effect is difficult to achieve. The better mode only adopts a soaking method for cleaning, the water consumption of the soaking method is slightly higher, the generated wastewater is relatively higher, although the intermittent cleaning of a single pot can be adopted, and the water after one pot is washed is used for washing the other pot, so that the wastewater consumption can be effectively reduced, but the problem can not be solved at all, and a few cubes of wastewater can be generated each time.
In addition, the high tower granulation process is a process in which the fertilizer mixture melt is sprayed and removed through small holes on a rotary cup-shaped spray basket under the action of centrifugal force and enters an air cooling tower, and is subjected to heat exchange with cold air from bottom to top to cool and crystallize spherical particles, and the spherical particles fall to the bottom of the tower to be sent to cooling treatment again. The granulating spray blue can be blocked by materials along with the time, the cleaning is not needed every 40 minutes to 2 hours, when the spray blue is used for removing foreign matters adhered to the melt and the foreign matters are needed to be cleaned in time, the direct flushing of hot water is the best, but the water consumption is large, and the generated waste water is more difficult to treat.
In addition, during granulation, the melt viscosity is not required to be adjusted according to the experience of operators, the blue spraying rotating speed is slightly improper, the melt is easily adhered to the wall of the tower, the thickness of the adhesive is prolonged and thickened along with the time, the weight exceeds the adhesive force to fall off, and large blocks fall off to easily damage equipment under the tower. For this reason, it is necessary to wash with water at an irregular period, and a large amount of waste water is generated by the flushing, and the cost of waste water treatment is extremely high.
The equipment cleaning circulation system is designed to solve the problem of temporary increase of wastewater, but after the cleaning water is repeatedly circulated, water-soluble matters can be increased, and the increase of the concentration of fertilizer in water influences the cleaning effect. Therefore, fresh water must be periodically and aperiodically replenished, which eventually results in an increase in the amount of waste water. Therefore, it is necessary to design a washing water recycling system to recycle washing water.
Disclosure of Invention
Based on the above, it is necessary to solve the problems of the prior art, and the present invention provides a system and a method for recycling cleaning water of a high tower apparatus, so as to solve the problem of high cleaning cost of the existing high tower apparatus.
The invention is realized by adopting the following technical scheme: a high tower equipment cleaning water recycling system comprises an on-tower filtering storage recycling subsystem and an off-tower filtering storage recycling subsystem; the on-tower filtering and storing circulating subsystem comprises an on-tower high-level water tank, a first coarse filter, a first filter press, a first filter water tank, a blue spraying soaking tank and a blue spraying flushing tank which are all arranged on the high tower; the under-tower filtering, storing and recycling subsystem comprises an under-tower dirt collecting tank, a second coarse filter, a second filter press, a second filter tank, a storage tank, a corrosion-resistant high-pressure pump and a tail gas washing tank which are all arranged under the high tower;
the tower upper water tank is used for supplying water to the high tower equipment, the blue spraying soaking tank and the blue spraying flushing tank;
the first coarse filter is used for coarse filtering of the cleaning water discharged by the high tower equipment and provides filtered filtrate I for the first filter press;
the first filter press is used for press-filtering the first filtrate, and storing the separated first press-filtered liquid in the first filter tank;
the first filter water tank is used for providing the first filter pressing liquid for the overhead water tank on the tower;
the lower tower sewage collecting tank is used for collecting sewage and drainage of the upper tower water tank, the blue spraying soaking tank and the blue spraying flushing tank;
the second coarse filter is used for coarse filtering of the sewage collecting liquid in the sewage collecting tank below the tower and provides filtered filtrate II for the second filter press;
the second filter press is used for press-filtering the second filtrate and storing the separated second press-filtered liquid in the second filter tank;
the filter water tank II is used for providing the filter pressing liquid II for the storage tank;
the storage tank is used for conveying one part of the second filter pressing liquid to the overhead water tank on the tower through the corrosion-resistant high-pressure pump, and the other part of the second filter pressing liquid is discharged into the tail gas washing tank and serves as washing water of the high-tower equipment;
the tail gas washing pool is used for collecting and washing the washing wastewater generated by the high tower equipment and generating the sewage-removing drainage which is conveyed to the second coarse filter.
According to the circulating utilization system for the cleaning water of the high-tower equipment, the coarse filter can be used for preliminarily filtering larger solids in the cleaning water, such as wood blocks, iron blocks, packaging ropes and the like, the filter press is used for carrying out filter pressing again, and the generated filter pressing liquid is stored in the filter water tank I so as to be used by the high-level water tank on the tower, so that the preliminary circulating utilization of the cleaning water is realized. In the invention, the sewage collection tank below the tower collects sewage discharged from the upper water tank of the tower, the blue spraying soaking tank and the blue spraying flushing tank, the second filter is subjected to rough filtration through the second filter to obtain the second filter, the second filter is subjected to secondary filter pressing through the second filter press, the second filter pressing liquid is stored by the second filter press water tank and the storage tank and is partially used by the upper water tank of the tower, and the other part of the second filter pressing liquid is discharged into the tail gas washing tank and used as washing water of the high tower equipment, so that the full utilization of the washing water is achieved, the water resource is saved, the total amount of tap water and discharged waste water taken by enterprises is reduced, and meanwhile, the washing cost of the high tower equipment is also reduced, and the social benefit and the economic benefit are obvious. In addition, after granulation, the temperature of the lower tower material is still higher, the material is required to be cooled by the air countercurrent of a rotary cooler, a small amount of dust is brought out by the air, the tail gas is treated by adopting the foam wet dust removal method in the last step, water is sprayed in the treatment, a large amount of hot air can evaporate water, and thus washing water can be used for spraying and consuming, thereby solving the problem of increasing waste water, further improving the utilization rate of the washing water and correspondingly reducing the washing cost.
Further, the on-tower filtration and storage circulation subsystem further comprises a corrosion resistant pump I and a corrosion resistant pump II; the sub-tower filtering, storing and recycling subsystem also comprises a corrosion resistant pump III and a corrosion resistant pump IV; the corrosion resistant pump I is used for conveying the filtrate I to the filter press I, and the corrosion resistant pump II is used for conveying the filter pressing liquid I in the filter press water tank I to the tower upper water tank; the corrosion-resistant pump three is used for conveying the filtrate II to the filter press II, and the corrosion-resistant pump four is used for conveying the filter pressing liquid II in the filter tank II to the storage tank.
The corrosion resistant pump I, the corrosion resistant pump II, the corrosion resistant pump III and the corrosion resistant pump IV can realize the liquid flow among other parts, and meanwhile, the common water pump is used, the water pump can be corroded to damage the water pump due to strong corrosiveness of the cleaning water, and the corrosion resistant water pump can ensure the service life of the system.
Further, the first filter press and the second filter press are both plate-and-frame filter presses.
The plate-and-frame filter press has the advantages of large filtering driving force, high solid content of filter cakes, clear filtrate, high solid recovery rate, less consumption of conditioning medicines and the like, so that fine filtration can be further carried out, and the filter pressing effect of pressing the filtrate is ensured.
Further, the first filter press and the second filter press are also used for providing the filter mud generated by the first filter press and the second filter press respectively to a high tower production line of the high tower equipment.
The filter mud generated by the first filter press and the second filter press can be recycled to the production line, so that the utilization rate of resources can be improved, the material cost of granulation is saved, and meanwhile, the filter mud is not required to be discharged, so that the energy is saved and the environment is protected.
Further, the volume of the lower tower dirt collecting tank is larger than that of the upper tower water tank, a rain shed is arranged on the lower tower dirt collecting tank, and a water stopping edge is arranged on the side face of the lower tower dirt collecting tank.
Because the sewage collecting tank under the tower can collect the waste water discharged by production besides the cleaning water, the volume of the sewage collecting tank under the tower is larger than that of the high-level water tank on the tower, the sewage collecting tank under the tower can be prevented from overflowing, and the recycling rate of water resources is improved. Moreover, the tower lower dirt collecting tank is separated from the outside, so that the liquid in the tower lower dirt collecting tank is cleaning water or waste water, energy waste caused by the fact that the tower lower filtering, storing and recycling subsystem is used for filtering rainwater and the like is avoided, the energy utilization rate of the whole cyclic utilization system is improved, and the cyclic utilization cost is saved.
Further, the volume of the storage tank is at least twice the volume of the under-tower dirt collection tank; the lower tower dirt collecting tank is a corrosion-resistant dirt collecting tank.
Because the cleaning water contains higher corrosiveness, the corrosion-resistant dirt collecting tank can be used for a long time, and the service life of the recycling system is prolonged.
Further, the storage tank is a glass fiber reinforced plastic storage tank.
Further, the high tower apparatus comprises at least one melting pot, at least one mixing pot; the first strainer is used for straining the cleaning water discharged from the mixing pot, and the overhead water tank on the tower is used for supplying water to the melting pot.
The invention also provides a high tower equipment cleaning water recycling method which is applied to the arbitrary high tower equipment cleaning water recycling system, and the high tower equipment cleaning water recycling method comprises the following steps:
washing the high tower apparatus with condensed water and discharging the washing water to the first strainer;
carrying out rough filtration on the cleaning water through the rough filter, and extracting filtrate I filtered by the rough filter to the filter press I for filter pressing;
delivering filter mud filtered by the first filter press to a high tower production line of the high tower equipment, and storing filter pressing liquid I filtered by the first filter press by a first filter tank;
and conveying the first filter pressing liquid in the first filter tank to an upper water tank of the tower and further supplying the first filter pressing liquid to high-tower equipment.
Further, the method for recycling the cleaning water of the high tower equipment further comprises the following steps:
collecting the sewage and the drainage of the upper water tank, the blue spraying soaking tank and the blue spraying flushing tank;
coarse filtering the sewage collecting liquid in the sewage collecting tank below the tower, and providing filtered filtrate II for the filter press II;
the second filter liquor is subjected to filter pressing, and the separated second filter liquor is stored in the second filter tank;
conveying the second filter pressing liquid in the second filter tank to the storage tank;
conveying one part of the second filter pressing liquid to a high-level water tank on the tower through the corrosion-resistant high-pressure pump, and discharging the other part of the second filter pressing liquid into the tail gas washing tank and used as washing water of high-level tower equipment;
and collecting washing wastewater generated by washing the high tower equipment, and conveying the generated sewage to the second coarse filter.
The beneficial effects of the method for recycling the cleaning water of the high-tower equipment are the same as those of the system for recycling the cleaning water of the high-tower equipment, and are not repeated here.
Drawings
The foregoing and other objects, features and advantages of the invention will be apparent from the following more particular description of preferred embodiments of the invention, as illustrated in the accompanying drawings. Like reference numerals refer to like parts throughout the drawings, and the drawings are not intentionally drawn to scale on actual size or the like, with emphasis on illustrating the principles of the invention.
Fig. 1 is a flow chart of the high tower apparatus cleaning water recycling system of embodiment 1 of the present invention.
Detailed Description
In order that the invention may be understood more fully, the invention will be described with reference to the accompanying drawings.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to and integrated with the other element or intervening elements may also be present. The terms "mounted," "one end," "the other end," and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
In the case of example 1,
referring to fig. 1, the present embodiment provides a high tower apparatus cleaning water recycling system, which includes an on-tower filtering storage recycling subsystem and an off-tower filtering storage recycling subsystem. The on-tower filtering and storing circulating subsystem comprises an on-tower high-level water tank, a first coarse filter, a first corrosion-resistant pump, a first filter press, a first filter water tank, a second corrosion-resistant pump, a blue spraying soaking tank and a blue spraying flushing tank which are all arranged on a high tower. The under-tower filtering, storing and recycling subsystem comprises an under-tower dirt collecting tank, a second coarse filter, a third corrosion-resistant pump, a second filter press, a second filter water tank, a fourth corrosion-resistant pump, a storage tank, a corrosion-resistant high-pressure pump and a tail gas washing tank which are all arranged under the high tower.
The high-level water tank on the tower is used for supplying water to high tower equipment, the blue spraying soaking tank and the blue spraying flushing tank. The high-level water tank on the tower can be communicated with the high-level tower equipment, the blue spraying soaking tank and the blue spraying flushing tank through a plurality of corrosion-resistant water pipes, and valves are arranged on the corrosion-resistant water pipes so as to control the flow rate of the high-level water tank on the tower flowing to the high-level tower equipment, the blue spraying soaking tank and the blue spraying flushing tank. Of course, the overhead water tank on the tower can also convey the internal water to the overhead tower equipment, the blue spraying soaking tank and the blue spraying flushing tank through the corrosion-resistant water pump.
The first coarse filter is used for coarse filtering of the cleaning water discharged from the high tower equipment and provides filtered filtrate I for the first filter press. The first strainer may be an existing strainer, and the large particles may be retained by the strainer, so that the strainer may be used instead of a general strainer. The first coarse filter can primarily perform coarse filtration on the cleaning water, and mainly filters wood blocks, iron blocks, packaging ropes and the like brought in by production so as to protect the corrosion-resistant pump in front of the first filter press. Wherein, corrosion resistant pump one is used for carrying filtrate one to pressure filter one.
The first filter press is used for press-filtering the first filter liquor, and the separated first filter liquor is stored in the first filter tank. The first filter press can also be used for providing the filter mud generated by the first filter press to a high tower production line of high tower equipment, so that the utilization rate of resources can be improved, and the material cost of granulation can be saved. The first filter press can adopt a plate-and-frame filter press, and the plate-and-frame filter press has the advantages of large filtering driving force, high solid content of filter cakes, clear filtrate, high solid recovery rate, small consumption of conditioning medicines and the like, so that the first filter liquor can be further subjected to fine filtration, and the filter pressing effect of the first filter liquor is ensured. The corrosion-resistant pump II is used for conveying the filter pressing liquid I in the filter water tank I to the high-level water tank on the tower.
The first filter water tank is used for providing a first pressurized filtrate for the upper water tank of the tower. The filter tank I returns the filter pressing liquid I to the cleaning water of the high tower equipment to realize the primary cyclic utilization of the cleaning water, thereby avoiding the direct discharge of the cleaning water, improving the utilization rate of water resources and reducing the cleaning cost of the high tower equipment.
The sewage collecting tank below the tower is used for collecting sewage and drainage of the upper water tank, the blue spraying soaking tank and the blue spraying flushing tank. The volume of the lower sewage collecting tank is larger than that of the upper water tank, a rain shed is arranged on the lower sewage collecting tank, and a water stopping edge is arranged on the side face of the lower sewage collecting tank. Because the sewage collecting tank under the tower can collect the waste water discharged by production besides the cleaning water, the volume of the sewage collecting tank under the tower is larger than that of the high-level water tank on the tower, the sewage collecting tank under the tower can be prevented from overflowing, and the recycling rate of water resources is improved. Moreover, the tower lower dirt collecting tank is separated from the outside, so that the liquid in the tower lower dirt collecting tank is cleaning water or waste water, energy waste caused by the fact that the tower lower filtering, storing and recycling subsystem is used for filtering rainwater and the like is avoided, the energy utilization rate of the whole cyclic utilization system is improved, and the cyclic utilization cost is saved. Preferably, the under-tower dirt collecting tank is a corrosion-resistant dirt collecting tank. Because the cleaning water contains higher corrosiveness, the corrosion-resistant dirt collecting tank can be used for a long time, and the service life of the recycling system is prolonged.
The second coarse filter is used for collecting the sewage in the sewage collecting tank below the coarse filter tower and providing the filtered filtrate II for the filter press II. The second coarse filter is the same as the first coarse filter, can carry out preliminary coarse filtration on the sewage collecting liquid, and filters out larger solids, thereby ensuring the filtering effect of the second filtrate. The corrosion-resistant pump III is used for conveying the filtrate II to the filter press II.
The second filter press is used for press-filtering the second filter liquor, and the separated second filter liquor is stored in the second filter tank. The second filter press can also be used for providing the filter mud generated by the second filter press to a high tower production line of high tower equipment, so that the utilization rate of materials is improved, the material cost of granulation is saved, and meanwhile, the filter mud is not required to be discharged, so that the energy is saved and the environment is protected. The second filter press can adopt a plate-and-frame filter press, and the second filter press is the same as the first filter press, and can carry out fine filtration on the filtrate, thereby further improving the separation effect of solid-liquid separation.
The second filter tank is used for providing the second filter liquid to the storage tank, and the fourth corrosion-resistant pump can be used for conveying the second filter liquid in the second filter tank to the storage tank. The storage tank is used for conveying one part of the second filter pressing liquid to a high-level water tank on the tower through the corrosion-resistant high-pressure pump, and the other part of the second filter pressing liquid is discharged into a tail gas washing pool and used as washing water of high-tower equipment. Wherein the volume of the storage tank is at least twice the volume of the sewage collecting tank under the tower. The volume of the tank should be large enough to ensure that the liquid transferred from the sump below the tower can be stored. The storage tank supplies water to the high-level water tank on the tower, and then supplies water to high-level tower equipment, thereby realizing another recycling process of the cleaning water. And the sewage collection pool under the tower can collect wastewater generated by the production of high tower equipment, so that the recycling rate of water resources is further improved, and the resources are saved.
The filter water tank II and the storage tank can store the pressure filtrate II, and part of the pressure filtrate II is supplied to the high-level water tank on the tower, and the other part of the pressure filtrate II is discharged into the tail gas washing tank and used as washing water of high-tower equipment, so that the full utilization of the washing water is achieved, water resources are saved, the total amount of tap water and discharged wastewater taken by enterprises is reduced, and meanwhile, the washing cost of the high-tower equipment is also reduced, and the social benefit and the economic benefit are obvious.
The tail gas washing pool is used for collecting washing wastewater generated by washing high tower equipment and generating sewage disposal drainage which is conveyed to the coarse filter II. After granulation, the temperature of the lower tower material is still higher, the material is required to be cooled by the air countercurrent of a rotary cooler, a small amount of dust is carried out by the air, the tail gas is subjected to foam wet dust removal treatment in the last step, water is sprayed in the treatment, and a large amount of hot air can evaporate water, so that washing water can be used for spraying consumption, the problem of increasing waste water is solved, the utilization rate of washing water is further improved, and the washing cost is correspondingly reduced.
In this embodiment, the first, second, third and fourth corrosion-resistant pumps may realize the flow of liquid between other components, and at the same time, since the corrosiveness of the cleaning water is strong, the common water pump may be used to damage the water pump due to corrosion, thereby damaging the instrument and reducing the service life of the whole system. And the corrosion-resistant water pump is adopted to ensure the service life of the system. And the filter mud generated by the first filter press and the second filter press can be recycled to the production line, so that the utilization rate of resources can be improved, the material cost of granulation is saved, and meanwhile, the filter mud is not required to be discharged, so that the energy is saved and the environment is protected.
The high tower apparatus includes at least one melting pot, at least one mixing pot. The filter tank is used for separating the cleaning water discharged from the melting pot, and the upper water tank of the tower is used for supplying water to the mixing pot. In this embodiment, the high tower apparatus is a high tower pulping apparatus, and the high tower apparatus includes a melting pot, a primary mixing pot, and a secondary mixing pot.
In summary, in the system for recycling the cleaning water of the high tower apparatus according to the embodiment, the first coarse filter can primarily filter out larger solids in the cleaning water, such as wood blocks, iron blocks, packaging ropes, etc., and then the larger solids are subjected to secondary filter pressing by the first filter press, and the generated pressed filtrate is stored in the first filter tank for the high water tank on the tower, so as to realize the primary recycling of the cleaning water. In the invention, the sewage collection tank below the tower collects sewage discharged from the upper water tank of the tower, the blue spraying soaking tank and the blue spraying flushing tank, and carries out coarse filtration through the coarse filter II to obtain filtrate II, carries out secondary filter pressing through the filter press II, stores the filtrate II through the filter press water tank II and the storage tank, and part of the filter pressing liquid II is used by the upper water tank of the tower, and the other part of the filter pressing liquid II is discharged into the tail gas washing tank and serves as washing water of high tower equipment so as to fully utilize the washing water, save water resources, reduce the total amount of tap water and discharged waste water taken by enterprises, and simultaneously reduce the washing cost of the high tower equipment. In addition, after granulation, the temperature of the lower tower material is still higher, the material is required to be cooled by the air countercurrent of a rotary cooler, a small amount of dust is brought out by the air, the tail gas is treated by adopting the foam wet dust removal method in the last step, water is sprayed in the treatment, a large amount of hot air can evaporate water, and thus washing water can be used for spraying and consuming, thereby solving the problem of increasing waste water, further improving the utilization rate of the washing water and correspondingly reducing the washing cost.
In the case of example 2,
the present embodiment provides a method for recycling high tower apparatus cleaning water, which is applied to the high tower apparatus cleaning water recycling system described in embodiment 1, and the method for recycling high tower apparatus cleaning water includes the following steps:
the method for recycling the cleaning water of the high tower equipment comprises the following steps:
cleaning the high tower equipment with condensed water and discharging the cleaning water to a first coarse filter;
coarse filtering the cleaning water through a coarse filter, and extracting a first filter liquor filtered by the coarse filter to a first filter press for filter pressing;
delivering the filter mud filtered by the first filter press to a high tower production line of high tower equipment, and storing filter pressing liquid I filtered by the first filter press by a first filter press water tank;
and conveying the filter pressing liquid I in the filter water tank I to an upper water tank of the tower, and further supplying to high-tower equipment.
In the case of example 3,
the embodiment provides a method for recycling cleaning water of high tower equipment, which comprises the following steps on the basis of the method of embodiment 2:
the method comprises the steps of collecting sewage and drainage of a high-level water tank, a blue spraying soaking tank and a blue spraying flushing tank on a tower;
the sewage collecting liquid in the sewage collecting tank below the coarse filtration tower is used for providing filtered filtrate II for the filter press II;
filter-pressing the second filter liquor, and storing the separated second filter liquor in a second filter water tank;
conveying the filter pressing liquid II in the filter water tank II to a storage tank;
conveying one part of the second filter pressing liquid to a high-level water tank on the tower through a corrosion-resistant high-pressure pump, and discharging the other part of the second filter pressing liquid into a tail gas washing tank and washing water serving as high-tower equipment;
and collecting washing wastewater generated by washing high tower equipment, and conveying the generated sewage to a coarse filter II.
The technical features of the foregoing embodiments may be arbitrarily combined, and for brevity, all of the possible combinations of the technical features of the foregoing embodiments are not described, however, all of the combinations of the technical features should be considered as being within the scope of the disclosure.
The above examples merely represent a few embodiments of the invention, which are described in more detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (6)
1. The high tower equipment cleaning water recycling system is characterized by comprising an on-tower filtering storage recycling subsystem and an off-tower filtering storage recycling subsystem; the on-tower filtering and storing circulating subsystem comprises an on-tower high-level water tank, a first coarse filter, a first filter press, a first filter water tank, a blue spraying soaking tank, a blue spraying flushing tank, a first corrosion resisting pump and a second corrosion resisting pump which are all arranged on the high tower; the under-tower filtering, storing and recycling subsystem comprises an under-tower sewage collecting tank, a second coarse filter, a second filter press, a second filter tank, a storage tank, a corrosion-resistant high-pressure pump, a corrosion-resistant pump III, a corrosion-resistant pump IV and a tail gas washing tank which are all arranged under the high tower;
the tower upper water tank is used for supplying water to the high tower equipment, the blue spraying soaking tank and the blue spraying flushing tank;
the first coarse filter is used for coarse filtering of the cleaning water discharged by the high tower equipment and provides filtered filtrate I for the first filter press;
the first filter press is used for press-filtering the first filtrate, and storing the separated first press-filtered liquid in the first filter tank;
the first filter water tank is used for providing the first filter pressing liquid for the overhead water tank on the tower;
the corrosion resistant pump I is used for conveying the filtrate I to the filter press I, and the corrosion resistant pump II is used for conveying the filter pressing liquid I in the filter press water tank I to the tower upper water tank;
the lower tower sewage collecting tank is used for collecting sewage and draining water of the upper tower water tank, the blue spraying soaking tank and the blue spraying flushing tank, the volume of the lower tower sewage collecting tank is larger than that of the upper tower water tank, a rain shed is arranged on the lower tower sewage collecting tank, and a water stopping edge is arranged on the side face of the lower tower sewage collecting tank;
the second coarse filter is used for coarse filtering of the sewage collecting liquid in the sewage collecting tank below the tower and provides filtered filtrate II for the second filter press;
the second filter press is used for press-filtering the second filtrate and storing the separated second press-filtered liquid in the second filter tank; the first filter press and the second filter press are also used for providing filter mud generated by the first filter press and the second filter press to a high tower production line of the high tower equipment;
the filter water tank II is used for providing the filter pressing liquid II for the storage tank;
the storage tank is used for conveying one part of the second filter pressing liquid to the overhead water tank on the tower through the corrosion-resistant high-pressure pump, and the other part of the second filter pressing liquid is discharged into the tail gas washing tank and serves as washing water of the high-tower equipment;
the corrosion-resistant pump three is used for conveying the filtrate II to the filter press II, and the corrosion-resistant pump four is used for conveying the filter pressing liquid II in the filter tank II to the storage tank;
the tail gas washing pool is used for collecting and washing wastewater generated by the high tower equipment and generating sewage disposal drainage which is conveyed to the second coarse filter;
the high tower equipment comprises at least one melting pot and at least one mixing pot; the first strainer is used for straining the cleaning water discharged from the mixing pot, and the overhead water tank on the tower is used for supplying water to the melting pot.
2. The system of claim 1, wherein the first filter press and the second filter press are both plate-and-frame filter presses.
3. The high tower apparatus wash water recycling system according to claim 1, wherein the volume of said storage tank is at least twice the volume of said under-tower sump; the lower tower dirt collecting tank is a corrosion-resistant dirt collecting tank.
4. The high tower apparatus cleaning water recycling system according to claim 1, wherein the storage tank is a glass fiber reinforced plastic storage tank.
5. A method for recycling the cleaning water of high tower equipment, which is applied to the cleaning water recycling system of the high tower equipment according to any one of claims 1 to 4, is characterized in that,
the method for recycling the cleaning water of the high tower equipment comprises the following steps:
washing the high tower apparatus with condensed water and discharging the washing water to the first strainer;
carrying out rough filtration on the cleaning water through the rough filter, and extracting filtrate I filtered by the rough filter to the filter press I for filter pressing;
delivering filter mud filtered by the first filter press to a high tower production line of the high tower equipment, and storing filter pressing liquid I filtered by the first filter press by a first filter tank;
and conveying the first filter pressing liquid in the first filter tank to an upper water tank of the tower and further supplying the first filter pressing liquid to high-tower equipment.
6. The method for recycling high tower apparatus cleaning water according to claim 5, further comprising the steps of:
collecting the sewage and the drainage of the upper water tank, the blue spraying soaking tank and the blue spraying flushing tank;
coarse filtering the sewage collecting liquid in the sewage collecting tank below the tower, and providing filtered filtrate II for the filter press II;
the second filter liquor is subjected to filter pressing, and the separated second filter liquor is stored in the second filter tank;
conveying the second filter pressing liquid in the second filter tank to the storage tank;
conveying one part of the second filter pressing liquid to a high-level water tank on the tower through the corrosion-resistant high-pressure pump, and discharging the other part of the second filter pressing liquid into the tail gas washing tank and used as washing water of high-level tower equipment;
and collecting washing wastewater generated by washing the high tower equipment, and conveying the generated sewage to the second coarse filter.
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| CN201811554583.7A CN109530332B (en) | 2018-12-18 | 2018-12-18 | High tower equipment cleaning water recycling system and recycling method thereof |
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| CN109530332A (en) | 2019-03-29 |
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