CN214861463U - Salt mud dewatering system of plate and frame filter press - Google Patents
Salt mud dewatering system of plate and frame filter press Download PDFInfo
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- CN214861463U CN214861463U CN202121094794.4U CN202121094794U CN214861463U CN 214861463 U CN214861463 U CN 214861463U CN 202121094794 U CN202121094794 U CN 202121094794U CN 214861463 U CN214861463 U CN 214861463U
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Abstract
The utility model discloses a salt mud dewatering system of a plate-and-frame filter press, which comprises a salt mud slurry pool, a salt mud pump, a plate-and-frame filter press, an air compressor, a receiving hopper and a controller; the liquid outlet of the salt slurry residue slurry pool is communicated with the liquid inlet of the salt slurry pump; the liquid outlet of the salt mud pump is respectively communicated with the liquid inlet of the plate-and-frame filter press and the reflux port of the salt mud slurry pool; the air outlet of the air compressor is communicated with the air inlet of the plate-and-frame filter press; a filtrate outlet of the plate-and-frame filter press is communicated with a filtrate discharge pipe; a receiving hopper is arranged below the slag discharge port at the bottom of the plate-and-frame filter press. The utility model has the advantages that: the utility model has simple connection structure and easy realization; the service life of the plate-and-frame filter press is prolonged, the filter pressing effect and the safe and stable operation of the system are ensured, the maintenance frequency of equipment is reduced, and the maintenance cost is reduced; greatly reduces the energy consumption in the subsequent filter cake drying process or the transportation cost in the filter cake transportation process.
Description
The technical field is as follows:
the utility model relates to a salt mud dewatering system, in particular to salt mud dewatering system of plate and frame filter press.
Background art:
the production of caustic soda by adopting sodium chloride saturated brine is a mature technology, and since the ionic membrane alkali-making technology in the mid-eighties of the world is successfully applied to the chlor-alkali industry in China, the chlor-alkali industry in China has the advantages that the technology and equipment are both rapidly improved, and the productivity is the first in the world; wherein, the saturated brine of sodium chloride needs to be refined, salt mud residue slurry can be generated in the process of refining the brine, filter cake generated after the salt mud residue slurry is subjected to pressure filtration by a plate-and-frame filter press is treated as solid waste, and the generated filtrate is recycled to a salt dissolving pool for salt dissolving; the prior plate-and-frame filter press has high operation load, can cause serious deformation of a filter plate in the plate-and-frame filter press after long-time operation, further has the problems of material spraying and the like, has poor filter pressing effect, has potential safety hazard and is not beneficial to the stable operation of a system; meanwhile, the overhaul and maintenance frequency of the plate-and-frame filter press is increased, so that the overhaul cost is increased, and the utilization rate of equipment is reduced.
The utility model has the following contents:
an object of the utility model is to provide a connection structure is simple, and has guaranteed the salt mud dewatering system of plate and frame filter press of filter-pressing effect and system safety and stability operation.
The utility model discloses by following technical scheme implement: the patent aims at providing a salt mud dewatering system of a plate-and-frame filter press, which comprises a salt mud slurry pool, a salt mud pump, a plate-and-frame filter press, an air compressor, a receiving hopper and a controller; the liquid outlet of the salt mud residue slurry pool is communicated with the liquid inlet of the salt mud pump; a liquid outlet of the salt mud pump is respectively communicated with a liquid inlet of the plate-and-frame filter press and a backflow port of the salt mud slurry pool; the air outlet of the air compressor is communicated with the air inlet of the plate-and-frame filter press; a filtrate outlet of the plate-and-frame filter press is communicated with a filtrate discharge pipe; the receiving hopper is arranged below the slag discharge port at the bottom of the plate and frame filter press; a feed valve and a pressure sensor are arranged on a pipeline between the salt sludge pump and the plate-and-frame filter press; a return valve is arranged on a pipeline between the liquid outlet of the salt mud pump and the liquid inlet of the salt mud residue slurry pool; an air inlet valve is arranged on a pipeline between the air compressor and the plate-and-frame filter press; the signal output end of the pressure sensor is in signal connection with the signal input end of the controller; and the signal output end of the controller is respectively connected with the signal input ends of the salt sludge pump, the feed valve, the reflux valve, the air compressor and the air inlet valve through signals.
Furthermore, the salt mud pump water diversion device further comprises a production water pipeline and a water diversion tank, wherein the production water pipeline is communicated with a water inlet of the water diversion tank, a liquid outlet of the salt mud slurry pool is communicated with a liquid inlet of the water diversion tank, and a liquid outlet of the water diversion tank is communicated with a liquid inlet of the salt mud pump.
Further, a liquid level sensor is arranged in the water diversion tank, and a water inlet valve is arranged on the production water pipeline at the water inlet of the water diversion tank; the signal output end of the liquid level sensor is in signal connection with the signal input end of the controller; and the signal output end of the controller is in signal connection with the signal input end of the water inlet valve.
Furthermore, a flow sensor is arranged on the filtrate discharge pipe, and a signal output end of the flow sensor is in signal connection with a signal input end of the controller.
Further, the filter press also comprises an air storage tank, wherein an air outlet of the air compressor is communicated with an air inlet of the air storage tank, and an air outlet of the air storage tank is communicated with an air inlet of the plate-and-frame filter press; and the air inlet valve is positioned on a pipeline between the air storage tank and the plate-and-frame filter press.
The utility model has the advantages that: 1. the utility model has simple connection structure and easy realization; the pressure sensor is used for detecting the pressure value at the inlet of the plate-and-frame filter press, so that the pressure of the salt slurry entering the plate-and-frame filter press is constant, the phenomenon that the load in the plate-and-frame filter press is too high is avoided, the service life of the plate-and-frame filter press is prolonged, the filter pressing effect and the safe and stable operation of a system are ensured, the maintenance frequency of equipment is reduced, and the maintenance cost is reduced; 2. the utility model discloses regularly sweep through the air compressor machine to the plate frame pressure filter, reduced the moisture content of filter cake, the energy consumption of the follow-up filter cake process of drying or the cost of transportation filter cake process that have significantly reduced.
Description of the drawings:
in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram of the overall connection structure of the system of the present invention.
The system comprises a salt mud slurry pool 1, a salt mud pump 2, a plate-and-frame filter press 3, an air compressor 4, a receiving hopper 5, a controller 6, a production water pipeline 7, a water diversion tank 8, an air storage tank 9, a feed valve 10, a pressure sensor 11, a reflux valve 12, an air inlet valve 13, a flow sensor 14, a liquid level sensor 15, a water inlet valve 16 and a filtrate discharge pipe 17.
The specific implementation mode is as follows:
as shown in fig. 1, a salt mud dewatering system of a plate-and-frame filter press comprises a salt mud slurry pool 1, a salt mud pump 2, a plate-and-frame filter press 3, an air compressor 4, a receiving hopper 5, a controller 6, a production water pipeline 7, a water diversion tank 8 and an air storage tank 9; the liquid outlet of the salt slurry residue pond 1 is communicated with the liquid inlet of the water diversion tank 8, the liquid outlet of the water diversion tank 8 is communicated with the liquid inlet of the salt slurry pump 2, and the production water pipeline 7 is communicated with the water inlet of the water diversion tank 8; the liquid outlet of the salt mud pump 2 is respectively communicated with the liquid inlet of the plate-and-frame filter press 3 and the reflux port of the salt mud slurry pool 1; an air outlet of the air compressor 4 is communicated with an air inlet of the air storage tank 9, and an air outlet of the air storage tank 9 is communicated with an air inlet of the plate-and-frame filter press 3; a filtrate outlet of the plate-and-frame filter press 3 is communicated with a filtrate discharge pipe 17; a receiving hopper 5 is arranged below the slag discharge port at the bottom of the plate-and-frame filter press 3; a feed valve 10 and a pressure sensor 11 are arranged on a pipeline between the salt mud pump 2 and the plate-and-frame filter press 3; a return valve 12 is arranged on a pipeline between the liquid outlet of the salt slurry pump 2 and the liquid inlet of the salt slurry residue slurry pool 1; an air inlet valve 13 is arranged on a pipeline between the air storage tank 9 and the plate-and-frame filter press 3, and a flow sensor 14 is arranged on a filtrate discharge pipe 17; a liquid level sensor 15 is arranged in the water diversion tank 8, and a water inlet valve 16 is arranged on the production water pipeline 7 at the water inlet of the water diversion tank 8.
The signal output ends of the pressure sensor 11, the flow sensor 14 and the liquid level sensor 15 are connected with the signal input end of the controller 6 through signals; the signal output ends of the controller 6 are respectively connected with the signal input ends of the salt mud pump 2, the feed valve 10, the return valve 12, the air compressor 4, the air inlet valve 13 and the water inlet valve 16 through signals.
The working principle is as follows: the controller 6 controls the feed valve 10 to be opened, the salt mud pump 2 is started, the salt mud slurry in the salt mud slurry pool 1 is conveyed into the plate-and-frame filter press 3 for filter pressing, the pressure at the liquid inlet of the plate-and-frame filter press 3 is gradually increased along with the continuous increase of filter cakes in the plate-and-frame filter press 3, the feeding resistance is increased, the pressure at the liquid inlet of the plate-and-frame filter press 3 is gradually increased, the pressure sensor 11 constantly detects the pressure value at the liquid inlet of the plate-and-frame filter press 3 and transmits a signal to the controller 6, when the detected pressure value reaches the pressure value set on the controller 6, the controller 6 controls the return valve 12 to be opened, partial mud flows back into the salt mud slurry pool 1, the pressure value at the liquid inlet of the plate-and-frame filter press 3 is ensured to be constant, the pressure of the salt mud slurry in the plate-and-frame filter press 3 is kept constant, the overhigh load in the plate-and frame filter press 3 is avoided, the service life of the plate-and the filter press 3 is prolonged, the safe and stable operation of the system is ensured, the maintenance frequency of the equipment is reduced, and the maintenance cost is reduced; a flow sensor 14 on a filtrate discharge pipe 17 detects the flow of filtrate at any time and transmits a signal to the controller 6, and when the detected flow value is smaller than the flow value set on the controller 6, the controller 6 controls the feed valve 10 to be closed, and the salt mud pump 2 is stopped; then the controller 6 controls the air inlet valve 13 to be opened, the air compressor 4 is started, compressed air is temporarily stored in the air storage tank 9, the compressed air in the air storage tank 9 reversely enters the plate-and-frame filter press 3 along the entering direction of the salt slurry to blow and dry the filter cake, the water content of the filter cake is effectively reduced, and the energy consumption in the subsequent filter cake drying process or the transportation cost in the filter cake transportation process is greatly reduced; after purging for a certain time, the controller 6 controls the air compressor 4 to stop running, and the air inlet valve 13 is closed; at last, the plate and frame filter press 3 begins the operation of unloading, and the mud cake falls into and connects the hopper 5 in as solid useless processing, the utility model discloses connection structure is simple, easily realizes.
The liquid level sensor 15 detects the water level change in the water diversion tank 8 at any moment and transmits a signal to the controller 6, when the detected water level is lower than a set value on the controller 6, the controller 6 controls the water inlet valve 16 to be opened, and when the water level is higher than the set value, the controller 6 controls the water inlet valve 16 to be closed; salt mud pump 2 of being convenient for when starting, fill water in it, can make salt mud pump 2 quick start carry salt mud sediment thick liquid, if do not fill water, the impeller of salt mud pump 2 is only rotatory with the air in the salt mud pump 2, because the severe of air is very little, the centrifugal force of production is too little, can not discharge all the air in salt mud pump 2 and the pipeline, can not make the interior production vacuum of salt mud pump 2 promptly, and then lead to salt mud sediment thick liquid can't be pumped to in subsequent equipment.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A salt mud dewatering system of a plate-and-frame filter press is characterized by comprising a salt mud slurry pool, a salt mud pump, a plate-and-frame filter press, an air compressor, a receiving hopper and a controller;
the liquid outlet of the salt mud residue slurry pool is communicated with the liquid inlet of the salt mud pump; a liquid outlet of the salt mud pump is respectively communicated with a liquid inlet of the plate-and-frame filter press and a backflow port of the salt mud slurry pool;
the air outlet of the air compressor is communicated with the air inlet of the plate-and-frame filter press; a filtrate outlet of the plate-and-frame filter press is communicated with a filtrate discharge pipe; the receiving hopper is arranged below the slag discharge port at the bottom of the plate and frame filter press;
a feed valve and a pressure sensor are arranged on a pipeline between the salt sludge pump and the plate-and-frame filter press; a return valve is arranged on a pipeline between the liquid outlet of the salt mud pump and the liquid inlet of the salt mud residue slurry pool; an air inlet valve is arranged on a pipeline between the air compressor and the plate-and-frame filter press;
the signal output end of the pressure sensor is in signal connection with the signal input end of the controller; and the signal output end of the controller is respectively connected with the signal input ends of the salt sludge pump, the feed valve, the reflux valve, the air compressor and the air inlet valve through signals.
2. The brine sludge dewatering system of the plate and frame filter press according to claim 1, further comprising a production water line and a diversion tank, wherein the production water line is communicated with a water inlet of the diversion tank, a liquid outlet of the brine sludge slurry pool is communicated with a liquid inlet of the diversion tank, and a liquid outlet of the diversion tank is communicated with a liquid inlet of the brine sludge pump.
3. The brine sludge dewatering system of the plate and frame filter press according to claim 2, wherein a liquid level sensor is arranged in the water diversion tank, and a water inlet valve is arranged on the production water pipeline at a water inlet of the water diversion tank; the signal output end of the liquid level sensor is in signal connection with the signal input end of the controller; and the signal output end of the controller is in signal connection with the signal input end of the water inlet valve.
4. The brine dewatering system of a plate and frame filter press according to any one of claims 1 to 3, wherein a flow sensor is provided on the filtrate discharge pipe, and a signal output terminal of the flow sensor is in signal connection with a signal input terminal of the controller.
5. The brine sludge dewatering system of the plate and frame filter press according to any one of claims 1-3, further comprising an air storage tank, wherein the air outlet of the air compressor is communicated with the air inlet of the air storage tank, and the air outlet of the air storage tank is communicated with the air inlet of the plate and frame filter press; and the air inlet valve is positioned on a pipeline between the air storage tank and the plate-and-frame filter press.
6. The brine sludge dewatering system of the plate and frame filter press according to claim 4, further comprising an air storage tank, wherein the air outlet of the air compressor is communicated with the air inlet of the air storage tank, and the air outlet of the air storage tank is communicated with the air inlet of the plate and frame filter press; and the air inlet valve is positioned on a pipeline between the air storage tank and the plate-and-frame filter press.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121094794.4U CN214861463U (en) | 2021-05-20 | 2021-05-20 | Salt mud dewatering system of plate and frame filter press |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121094794.4U CN214861463U (en) | 2021-05-20 | 2021-05-20 | Salt mud dewatering system of plate and frame filter press |
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| CN214861463U true CN214861463U (en) | 2021-11-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114560613A (en) * | 2022-03-21 | 2022-05-31 | 太原市润民环保节能有限公司 | Plate frame mud pressing system and method for stabilizing water content of mud cakes |
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2021
- 2021-05-20 CN CN202121094794.4U patent/CN214861463U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114560613A (en) * | 2022-03-21 | 2022-05-31 | 太原市润民环保节能有限公司 | Plate frame mud pressing system and method for stabilizing water content of mud cakes |
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