CN214880892U - Inferior coal demineralized water pretreatment systems - Google Patents
Inferior coal demineralized water pretreatment systems Download PDFInfo
- Publication number
- CN214880892U CN214880892U CN202120953470.5U CN202120953470U CN214880892U CN 214880892 U CN214880892 U CN 214880892U CN 202120953470 U CN202120953470 U CN 202120953470U CN 214880892 U CN214880892 U CN 214880892U
- Authority
- CN
- China
- Prior art keywords
- water
- ultrafiltration
- unit
- tank
- reverse osmosis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model belongs to industry feedwater treatment field, concretely relates to faulty coal demineralized water pretreatment systems. The problem of current faulty coal demineralized water pretreatment equipment's trouble many, maintenance work load is big and PLC control stability is poor is solved, technical scheme is: including faulty coal demineralized water pretreatment devices and in-sequence control system, faulty coal demineralized water pretreatment devices includes former pond, raw water elevator pump, heat exchanger, a plurality of multi-media filter, a plurality of ultrafiltration system, ultrafiltration product pond, ultrafiltration water pump, reverse osmosis system, middle pond, reverse osmosis thick pond, multi-media filter backwash water pump and ultrafiltration backwash water pump, in-sequence control system includes that in-sequence control selection unit, logic control unit, condition judge unit, the control unit that queues up, trouble feedback unit and in-sequence control system are external to be mouthful, the utility model discloses select in-sequence control equipment can realize automatic operation, and degree of automation is high, has greatly alleviateed operating personnel's intensity of labour.
Description
Technical Field
The utility model belongs to industry feedwater treatment field, concretely relates to faulty coal demineralized water pretreatment systems.
Background
In recent years, the inferior coal utilization device is constructed in China, as a desalting water pretreatment device, most of operation units are controlled by a PLC (programmable logic controller) or operated by intermittent manual operation to realize water production, the operation of personnel is frequent, a PLC control program is prone to failure, the operation mode of each unit is unreasonable, and the stability and the safety guarantee of the device are poor. The plate heat exchanger, the multi-medium filter and the ultrafiltration system have the disadvantages of more operation faults, large maintenance workload, inaccurate backwashing time control, water resource waste and high production and operation cost.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the technical problems of many faults, large maintenance workload and poor PLC control stability of the existing low-grade coal demineralized water pretreatment equipment and providing a low-grade coal demineralized water pretreatment system.
In order to solve the technical problem, the utility model discloses a technical scheme is:
a low-grade coal desalting water pretreatment system comprises a low-grade coal desalting water pretreatment device and a sequential control system, wherein the low-grade coal desalting water pretreatment device comprises a raw water tank, a raw water lift pump, a heat exchanger, a plurality of multi-media filters, a plurality of ultrafiltration systems, an ultrafiltration product water tank, an ultrafiltration water pump, a reverse osmosis system, an intermediate water tank, a reverse osmosis concentrated water tank, a multi-media filter backwashing water pump and an ultrafiltration backwashing water pump, a water outlet of the raw water tank is connected with a water inlet of the raw water lift pump through a pipeline, a water outlet of the raw water lift pump is connected with a water inlet of the heat exchanger, a water outlet of the heat exchanger is connected with water inlets of the plurality of multi-media filters, the plurality of multi-media filters are connected in parallel, water outlets of the plurality of multi-media filters are respectively connected with water inlets of the plurality of ultrafiltration systems, the plurality of ultrafiltration systems are connected in parallel, the water outlets of the plurality of ultrafiltration systems are all connected with the water inlet of an ultrafiltration water generating tank, the water outlet of the ultrafiltration water generating tank is connected with the water inlet of an ultrafiltration water pump, the water outlet of the ultrafiltration water pump is connected with the water inlet of a reverse osmosis system, the water outlet of the reverse osmosis system is connected with the water inlet of an intermediate water tank, the water outlet of the intermediate water tank is connected with a mixed bed system, the other water outlet of the ultrafiltration water generating tank is connected with the water inlet of an ultrafiltration backwashing water pump, the water outlet of the ultrafiltration backwashing water pump is connected with the water outlets of the plurality of ultrafiltration systems, the other water outlet of the reverse osmosis system is connected with the water inlet of a reverse osmosis concentrated water tank and a concentrated water discharge tank, the water outlet of the reverse osmosis concentrated water tank is connected with the water inlet of a multi-media filter backwashing water pump, and the water outlet of the multi-media filter backwashing water pump is connected with the water outlets of the plurality of multi-media filters, the other water outlets of the plurality of multi-medium filters and the ultrafiltration system are connected to a backwashing drainage pool;
the tank tops of the raw water tank, the ultrafiltration water production tank and the intermediate water tank are all provided with liquid level meters, pipelines of water outlets are provided with a pressure meter and a thermometer, the water outlets of the plurality of multi-medium filters are all provided with turbidity sensors, and the water outlets of the plurality of ultrafiltration systems and the reverse osmosis systems are all provided with concentration sensors;
the sequence control system comprises a sequence control selection unit, a logic control unit, a condition judgment unit, a queuing control unit, a fault feedback unit and a sequence control system external interface, wherein the output end of the sequence control selection unit is connected with the input end of the logic control unit, the output end of the logic control unit is connected with the input end of the condition judgment unit, the queuing control unit is connected with the fault feedback unit, the output ends of the logic control unit and the condition judgment unit are connected with the queuing control unit and the fault feedback unit, and the sequence control selection unit, the logic control unit, the condition judgment unit, the queuing control unit and the fault feedback unit are connected with the sequence control system external interface;
and the external interfaces of the sequential control system are respectively and electrically connected with a pressure gauge and a temperature gauge in the raw water pool, the ultrafiltration water production pool and the intermediate water pool, a turbidity sensor in the multi-medium filter, a concentration sensor in the ultrafiltration system and the reverse osmosis system, a raw water lift pump, a heat exchanger and an ultrafiltration water pump.
Further, the heat exchanger is a plate heat exchanger.
Furthermore, the sequence control system also comprises a counting unit, and the counting unit is connected with a connecting line between the logic control unit and the condition judgment unit.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses a to demineralized water pretreatment systems optimal control, operating personnel only need input operating duration on operating system, select in the same direction as accuse equipment and can realize the automatic operation, and degree of automation is high, has greatly alleviateed operating personnel's intensity of labour, can regularly carry out the back flush to many medium filter and ultrafiltration apparatus simultaneously, and the water discharge is washed back in the rational control, and manufacturing cost reduces.
Drawings
FIG. 1 is a process flow diagram of the brine removing pretreatment device for low-grade coal of the present invention;
FIG. 2 is a schematic structural view of the sequential control system of the present invention;
FIG. 3 is a schematic diagram of the operation of the sequence control system;
in the figure: 1-raw water pool, 2-raw water lift pump, 3-heat exchanger, 4-multi-medium filter, 5-ultrafiltration system, 6-ultrafiltration water producing pool, 7-ultrafiltration water pump, 8-reverse osmosis system, 9-middle water pool, 10-reverse osmosis concentrated water pool, 11-multi-medium filter backwash water pump, 12-ultrafiltration backwash water pump, 13-sequence control selection unit, 14-logic control unit, 15-condition judgment unit, 16-counting unit, 17-queue control unit, 18-fault feedback unit and 19-sequence control system external interface.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
As shown in fig. 1, a low-grade coal desalting water pretreatment system comprises a low-grade coal desalting water pretreatment device and a sequential control system, wherein the low-grade coal desalting water pretreatment device comprises a raw water tank 1, a raw water lift pump 2, a plate heat exchanger 3, 10 multi-media filters 4, 4 ultrafiltration systems 5, an ultrafiltration product water tank 6, an ultrafiltration water pump 7, a reverse osmosis system 8, an intermediate water tank 9, a reverse osmosis concentrated water tank 10, a multi-media filter backwash water pump 11 and an ultrafiltration backwash water pump 12, a water outlet of the raw water tank 1 is connected with a water inlet of the raw water lift pump 2 through a pipeline, a water outlet of the raw water lift pump 2 is connected with a water inlet of the heat exchanger 3, a water outlet of the heat exchanger 3 is connected with water inlets of 10 multi-media filters 4, the 10 multi-media filters 4 are connected in parallel, water outlets of the 10 multi-media filters 4 are respectively connected with water inlets of the 4 ultrafiltration systems 5, the 4 ultrafiltration systems 5 are connected in parallel, the water outlets of the 4 ultrafiltration systems 5 are all connected with the water inlet of an ultrafiltration water production tank 6, the water outlet of the ultrafiltration water production tank 6 is connected with the water inlet of an ultrafiltration water pump 7, the water outlet of the ultrafiltration water pump 7 is connected with the water inlet of a reverse osmosis system 8, the water outlet of the reverse osmosis system 8 is connected with the water inlet of an intermediate water tank 9, the water outlet of the intermediate water tank 9 is connected with a mixed bed system, the other water outlet of the ultrafiltration water production tank 6 is connected with the water inlet of an ultrafiltration backwashing water pump 12, the water outlet of the ultrafiltration backwashing water pump 12 is connected with the water outlets of the 4 ultrafiltration systems 5, the other water outlet of the reverse osmosis system 8 is connected with the water inlet of a reverse osmosis concentrated water tank 10 and a concentrated water discharge tank, and the water outlet of the reverse osmosis concentrated water tank 10 is connected with the water inlet of a multi-media filter backwashing water pump 11, the water outlet of the multi-medium filter backwashing water pump 11 is connected with the water outlets of 10 multi-medium filters 4, and the other water outlets of the multi-medium filters 4 and the ultrafiltration system 5 are both connected to a backwashing drainage pool;
the tank tops of the raw water tank 1, the ultrafiltration water production tank 6 and the middle water tank 9 are all provided with liquid level meters, pipelines of water outlets are provided with a pressure meter and a thermometer, water outlets of the 10 multi-medium filters 4 are all provided with turbidity sensors, and water outlets of the 4 ultrafiltration systems 5 and the reverse osmosis system 8 are all provided with concentration sensors;
as shown in fig. 2, the sequence control system comprises a sequence control selection unit 13, a logic control unit 14, a condition judgment unit 15, a queuing control unit 17, a fault feedback unit 18 and a sequence control system external interface 19, the output end of the sequential control selection unit 13 is connected with the input end of a logic control unit 14, the output end of the logic control unit 14 is connected with the input end of a condition judgment unit 15, the queuing control unit 17 is connected with the failure feedback unit 18, the output ends of the logic control unit 14 and the condition judgment unit 15 are both connected with the queuing control unit 17 and the failure feedback unit 18, the sequence control selection unit 13, the logic control unit 14, the condition judgment unit 15, the queuing control unit 17 and the fault feedback unit 18 are all connected with an external interface 19 of the sequence control system, the sequential control system also comprises a counting unit 16, and the counting unit 16 is connected with a connecting line between the logic control unit 14 and the condition judgment unit 15.
The sequence control system external interface 19 is respectively and electrically connected with a pressure gauge and a thermometer in the raw water pool 1, the ultrafiltration product water pool 6 and the intermediate water pool 9, a turbidity sensor in the multi-medium filter 4, a concentration sensor in the ultrafiltration system 5 and the reverse osmosis system 8, the raw water lift pump 2, the heat exchanger 3 and the ultrafiltration water pump 7.
The utility model discloses the theory of operation as follows:
when the device is used, the sequence control system is firstly opened, the running time of each part in the low-quality coal demineralized water pretreatment device is set on a control panel of the system, the sequence control device is selected according to requirements, and then switches of each part of the low-quality coal demineralized water pretreatment device are started;
raw water in a raw water tank 1 enters a plate type heat exchanger 3 through a raw water lifting pump 2, effluent of the plate type heat exchanger 3 enters a multi-medium filter 4, a turbidity sensor in the multi-medium filter 4 receives turbidity of the treated water and feeds turbidity data back to a condition judgment unit 15 of a sequence control system, the sequence control system gives an instruction to the multi-medium filter 4, effluent with the turbidity less than 5 enters an ultrafiltration system 5, most organic matters in the effluent are removed by the ultrafiltration system 5 and then enter an ultrafiltration product water tank 6 through a pipeline, one part of the effluent of the ultrafiltration product water tank 6 is pressurized by an ultrafiltration water pump 7 and enters a reverse osmosis system 8, the other part of the effluent is extracted by an ultrafiltration backwash water pump 12 to serve as backwash water for the ultrafiltration system 5, a concentration sensor in the reverse osmosis system 8 collects signals and transmits the data to the condition judgment unit 15, the sequence control system gives an instruction to the reverse osmosis system 8, and the reverse osmosis system 8 with reduced conductivity gives water to an intermediate water tank 9, 80% of the reverse osmosis concentrated water is discharged through a pipeline, 20% of the concentrated water enters a reverse osmosis concentrated water tank 10, the concentrated water in the reverse osmosis concentrated water tank 10 is pressurized through a multi-media filter backwashing water pump 11 to be used as the backwashing water of a multi-media filter 4, and the effluent water of an intermediate water tank 9 enters a mixed bed system;
in the operation process, the sequence control selection unit 13 is used for automatically selecting the number of running sets and the number of equipment units, the logic control unit 14 is used for realizing sequence control operations such as starting, stopping and resetting of the equipment, the counting unit 16 is used for realizing accumulation of running time of each equipment and device and adjustment and recording of backwashing time, the condition judgment unit 15 is used for realizing sequence control condition judgment, the fault feedback unit 18 is used for realizing a sequence control fault detection feedback function, and the queuing control unit 17 is used for realizing preferential running and backwashing of the system; programming each step of sequence control operation conditions into the logic control unit 14 in advance, comparing the current conditions with the conditions in the logic control unit one by one when the sequence control is operated to the step, realizing by the condition judgment unit, performing the current equipment action after confirming the consistency, keeping waiting and displaying the waiting position on the picture, and realizing by the condition judgment unit 15, wherein the current conditions are inconsistent with the conditions in the logic control unit; when different sequence control programs select the same equipment, according to the principle of 'first-come first-obtained', after the first sequence of sequence control uses the equipment, the second sequence of equipment can be continuously used and is realized by a queuing control unit; the utility model discloses an to demineralized water pretreatment system optimal control, operating personnel only need input operating duration on operating system, select the in-sequence control equipment can realize automatic operation, degree of automation is high, has greatly alleviateed operating personnel's intensity of labour, can regularly carry out the back flush to many medium filter and ultrafiltration apparatus simultaneously, reasonable control backwash water discharge, reduced manufacturing cost; when the counting unit 16 detects that the multimedia filter 4 reaches the running period, namely, the running is stopped, the sequential control selection unit 13 selects a backwashing pump and a valve to carry out automatic backwashing operation.
Claims (3)
1. The utility model provides a low grade coal demineralized water pretreatment systems which characterized in that: the device comprises an inferior coal desalting brine pretreatment device and a sequential control system, wherein the inferior coal desalting brine pretreatment device comprises a raw water pool (1), a raw water lift pump (2), a heat exchanger (3), a plurality of multi-media filters (4), a plurality of ultrafiltration systems (5), an ultrafiltration water production pool (6), an ultrafiltration water pump (7), a reverse osmosis system (8), an intermediate water pool (9), a reverse osmosis concentrated water pool (10), a multi-media filter backwashing water pump (11) and an ultrafiltration backwashing water pump (12), wherein a water outlet of the raw water pool (1) is connected with a water inlet of the raw water lift pump (2) through a pipeline, a water outlet of the raw water lift pump (2) is connected with a water inlet of the heat exchanger (3), a water outlet of the heat exchanger (3) is connected with water inlets of the plurality of multi-media filters (4), and the plurality of multi-media filters (4) are connected in parallel, the water outlets of the plurality of multi-media filters (4) are respectively connected with the water inlets of the plurality of ultrafiltration systems (5), the plurality of ultrafiltration systems (5) are connected in parallel, the water outlets of the plurality of ultrafiltration systems (5) are all connected with the water inlet of an ultrafiltration water production tank (6), the water outlet of the ultrafiltration water production tank (6) is connected with the water inlet of an ultrafiltration water pump (7), the water outlet of the ultrafiltration water pump (7) is connected with the water inlet of a reverse osmosis system (8), the water outlet of the reverse osmosis system (8) is connected with the water inlet of an intermediate water tank (9), the water outlet of the intermediate water tank (9) is connected with a mixed bed system, the other water outlet of the ultrafiltration water production tank (6) is connected with the water inlet of an ultrafiltration backwashing water pump (12), and the water outlet of the ultrafiltration backwashing water pump (12) is connected with the water outlets of the plurality of ultrafiltration systems (5), the other water outlet of the reverse osmosis system (8) is connected with a water inlet of a reverse osmosis concentrated water tank (10) and a concentrated water discharge tank, the water outlet of the reverse osmosis concentrated water tank (10) is connected with the water inlet of a multi-media filter backwashing water pump (11), the water outlet of the multi-media filter backwashing water pump (11) is connected with the water outlets of a plurality of multi-media filters (4), and the other water outlets of the plurality of multi-media filters (4) and the ultrafiltration system (5) are connected to a backwashing water discharge tank;
the tank tops of the raw water tank (1), the ultrafiltration water producing tank (6) and the middle water tank (9) are respectively provided with a liquid level meter, a pipeline of a water outlet is provided with a pressure meter and a thermometer, water outlets of the plurality of multi-medium filters (4) are respectively provided with a turbidity sensor, and water outlets of the plurality of ultrafiltration systems (5) and the reverse osmosis system (8) are respectively provided with a concentration sensor;
the sequence control system comprises a sequence control selection unit (13), a logic control unit (14), a condition judgment unit (15), a queuing control unit (17), a fault feedback unit (18) and a sequence control system external interface (19), the output end of the sequential control selection unit (13) is connected with the input end of the logic control unit (14), the output end of the logic control unit (14) is connected with the input end of the condition judgment unit (15), the queuing control unit (17) is connected with the fault feedback unit (18), the output ends of the logic control unit (14) and the condition judgment unit (15) are both connected with the queuing control unit (17) and the fault feedback unit (18), the sequence control selection unit (13), the logic control unit (14), the condition judgment unit (15), the queuing control unit (17) and the fault feedback unit (18) are all connected with an external interface (19) of the sequence control system;
and the sequence control system external interface (19) is respectively and electrically connected with a pressure gauge and a thermometer in the raw water pool (1), the ultrafiltration production water pool (6) and the intermediate water pool (9), a turbidity sensor in the multi-medium filter (4), a concentration sensor in the ultrafiltration system (5) and the reverse osmosis system (8), the raw water lift pump (2), the heat exchanger (3) and the ultrafiltration water pump (7).
2. The system of claim 1, wherein the system comprises: the heat exchanger (3) is a plate heat exchanger.
3. The system of claim 1, wherein the system comprises: the sequential control system also comprises a counting unit (16), and the counting unit (16) is connected with a connecting line between the logic control unit (14) and the condition judgment unit (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120953470.5U CN214880892U (en) | 2021-05-07 | 2021-05-07 | Inferior coal demineralized water pretreatment systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120953470.5U CN214880892U (en) | 2021-05-07 | 2021-05-07 | Inferior coal demineralized water pretreatment systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214880892U true CN214880892U (en) | 2021-11-26 |
Family
ID=78889915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120953470.5U Active CN214880892U (en) | 2021-05-07 | 2021-05-07 | Inferior coal demineralized water pretreatment systems |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214880892U (en) |
-
2021
- 2021-05-07 CN CN202120953470.5U patent/CN214880892U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111320272B (en) | Operation method of automatic backwashing device of multi-condition controlled denitrification biological filter | |
| CN103676864A (en) | Intelligent control system of sea water desalination hyperfiltration reverse osmosis device | |
| CN113087270A (en) | Inferior coal demineralized water pretreatment systems | |
| CN214880892U (en) | Inferior coal demineralized water pretreatment systems | |
| CN207827991U (en) | A kind of Intelligent purifying water system | |
| CN214829084U (en) | Sewage treatment plant based on PLC control | |
| CN106582896B (en) | The continuous ion-exchange system of automation and control method of production are extracted for isoleucine scale | |
| CN212167070U (en) | Adjustable hollow fiber ultrafiltration system | |
| CN213202659U (en) | Novel diatomite filter | |
| CN211420084U (en) | Deep processing device for tar in residual ammonia water in coking production | |
| CN111913432A (en) | Beer brewing control system and method | |
| CN107504017B (en) | Hydraulic oil intelligent purification system of hydraulic gate hydraulic system | |
| CN114534497A (en) | Automatic ultrafiltration control system | |
| CN214880607U (en) | Produced water treatment and water injection system | |
| CN219745110U (en) | Automatic intelligent control system for wet screening of aluminum paste | |
| CN206140753U (en) | Energy -conserving automatically controlled PET bottle piece cleaning system | |
| CN111389228A (en) | Adjustable hollow fiber ultrafiltration system | |
| CN210613387U (en) | Non-stop cleaning anti-pollution reverse osmosis membrane device | |
| CN111186879A (en) | Double-pump double-membrane reverse osmosis equipment and water treatment method | |
| CN109502693A (en) | A kind of full-automatic softening plant and method applied to Treated sewage reusing processing system | |
| CN210151184U (en) | Slag-liquid separation system for preparing vanadium by vanadium slag leaching process | |
| CN210457587U (en) | Reverse osmosis concentrated water recycling equipment for pretreatment and backwashing | |
| CN219546827U (en) | Demineralized water device with switchable standby filter element | |
| CN212216585U (en) | Automatic liquid level discharging device for storage tank for soil thermal desorption | |
| CN220364447U (en) | Device for recycling regenerated wastewater of primary desalting system in segmented mode |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |