CN111043890B

CN111043890B - Transition heat radiation water tank, water quality detection alarm and cooling system and water quality detection method

Info

Publication number: CN111043890B
Application number: CN201911347128.4A
Authority: CN
Inventors: 张力磊; 尹航; 梁思懿
Original assignee: MCC Capital Engineering and Research Incorporation Ltd
Current assignee: MCC Capital Engineering and Research Incorporation Ltd
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2024-03-22
Anticipated expiration: 2039-12-24
Also published as: CN111043890A

Abstract

The embodiment of the application provides a transition heat dissipation basin, water quality testing warning and cooling system and water quality testing method, and transition heat dissipation basin includes: the device comprises a heat dissipation groove, a water collecting groove arranged at one end of the heat dissipation groove and a water distributing groove fixedly arranged above the heat dissipation groove; the water collecting tank is used for containing ammonia distillation waste liquid, and is provided with an outflow hole which is communicated with the water distributing tank so as to guide part of the ammonia distillation waste liquid flowing out of the water collecting tank into the water distributing tank; the length direction of the water distribution groove is parallel to the length direction of the heat dissipation groove, and in the first direction, the size of the water distribution groove is smaller than that of the heat dissipation groove so that ammonia distillation waste liquid flowing out of the water distribution groove flows into the heat dissipation groove, wherein the first direction is the direction perpendicular to the length direction of the heat dissipation groove and the direction of the notch of the heat dissipation groove respectively. According to the method, the high-efficiency and reliable heat dissipation treatment can be carried out on the ammonia distillation waste liquid, the temperature of the ammonia distillation waste liquid in the coking wastewater treatment process is effectively reduced, and the energy conservation and consumption reduction of the coking wastewater treatment process are realized.

Description

Transition heat radiation water tank, water quality detection alarm and cooling system and water quality detection method

Technical Field

The application relates to the technical field of industrial wastewater treatment, in particular to a transition heat radiation water tank, a water quality detection alarm and cooling system and a water quality detection method.

Background

Along with the increasing severity of environmental protection situation, the emission standard of wastewater in the coking industry is continuously improved, the treatment of coking wastewater in the whole society is more and more important, and along with the advocacy of dry quenching and water resource saving, the coking wastewater is originally used for wet quenching and is also unrealizable. The coking wastewater does not go out, and the ever-increasing external drainage quality requirements of the coking wastewater can be met only by improving the running stability of the system and strengthening the running efficiency of each device unit, saving energy and reducing consumption and deep digging potential, and even some areas have developed the zero discharge technology of the coking wastewater.

At present, pretreatment technologies such as oil separation, air floatation and the like are combined with a biochemical method to serve as a main flow process in a sewage station of a coking plant, when the incoming water temperature of coking wastewater is too high, the oil separation and air floatation treatment effect of a pretreatment unit is often reduced (the temperature is easy to control to be lower than 40 ℃), meanwhile, the temperature of a water body entering a biochemical unit is also influenced, the activity of biochemical sludge is closely related to the environmental temperature (the temperature is controlled to be preferably 25-35 ℃), and therefore, the control of the operating temperature is of great significance to the operation stability of the sewage station. Aiming at the measure of controlling the water temperature of the ammonia distillation wastewater, conventionally, a primary heat exchanger or an air cooling tower is additionally arranged for cooling treatment after the ammonia distillation wastewater enters a sewage station.

However, the operation of the heat exchanger has the following problems: the heat exchange pipeline is often blocked by residual tar substances in ammonia distillation wastewater, the existing light benzene (crude benzene) and wash oil in the crude benzene working procedure of a coking plant are uniformly mixed to be used as a cleaning agent for each cleaning, a centrifugal pump is used as power, the cleaning agent is fed from the lower part of a blocked flow passage of a heat exchanger, and then flows out from the upper part, so that the cleaning agent circulation is formed. Every maintenance is complicated, the cleaning agent is harmful to workers, strict protective measures are needed, and great inconvenience is brought to production operation.

Disclosure of Invention

Aiming at the problems in the prior art, the application provides a transition heat dissipation water tank, a water quality detection alarm and cooling system and a water quality detection method, which can conduct efficient and reliable heat dissipation treatment on ammonia evaporation waste liquid, effectively reduce the temperature of the ammonia evaporation waste liquid in the coking wastewater treatment process, and realize energy conservation and consumption reduction in the coking wastewater treatment process.

In order to solve the technical problems, the application provides the following technical scheme:

in a first aspect, the present application provides a transition heat sink comprising: the device comprises a heat dissipation groove, a water collecting groove arranged at one end of the heat dissipation groove and a water distributing groove fixedly arranged above the heat dissipation groove;

The water collecting tank is used for containing ammonia distillation waste liquid, and is provided with an outflow hole which is communicated with the water distributing tank so as to guide part of the ammonia distillation waste liquid flowing out of the water collecting tank into the water distributing tank;

the length direction of the water distribution groove is parallel to the length direction of the heat dissipation groove, and in the first direction, the size of the water distribution groove is smaller than that of the heat dissipation groove so that ammonia distillation waste liquid flowing out of the water distribution groove flows into the heat dissipation groove, wherein the first direction is perpendicular to the length direction of the heat dissipation groove and the direction of the notch of the heat dissipation groove respectively.

Further, a sampling port is arranged on one side surface of the water collecting tank, which is far away from the outflow hole, so as to detect the water quality of the ammonia distillation waste liquid flowing out through the sampling port;

an emptying pipe is further arranged on one side surface, far away from the outflow hole, of the water collecting tank, and the emptying pipe is arranged close to the bottom of the water collecting tank.

Further, the outflow hole is arranged at a position higher than the water distribution groove on the water collection groove, and the outflow hole is arranged opposite to the notch of the water distribution groove.

Further, a plurality of through-flow round holes are formed in the side wall extending in the length direction in the water distribution groove;

Each overcurrent round hole is sequentially arranged along the length direction of the water distribution groove.

Further, overflow weirs are arranged at the edges of the notch of the heat dissipation groove;

the top of the overflow weir is serrated so that the ammonia distillation waste liquid overflowed from the heat dissipation groove flows into an external water collecting well or an adjusting tank.

Further, a plurality of upright post supports are arranged at the bottom of the water distribution tank;

the bottoms of the upright post supports are fixedly arranged in the heat dissipation grooves.

Further, the two side walls extending in the length direction in the water distribution groove are respectively equal to the distance between the two side walls extending in the length direction in the heat dissipation groove;

two side walls adjacent to the side wall provided with the outflow hole in the water collecting tank are respectively equal to the distance between the two side walls extending along the length direction in the heat dissipation tank.

In a second aspect, the present application provides a water quality detection alarm and cooling system, comprising: the system comprises a sampling system, an automatic water quality detector, an interlocking alarm feedback automatic control system and the transition heat radiation water tank;

the sampling system is respectively communicated with the automatic water quality detector and the transition heat dissipation water tank so as to transmit ammonia evaporation waste liquid flowing out of the transition heat dissipation water tank to the automatic water quality detector for water quality detection;

The interlocking alarm feedback automatic control system is respectively connected with the automatic water quality detector and the transition heat dissipation water tank so as to judge whether to send out water quality alarm information and control the transition heat dissipation water tank to be stopped according to the received water quality detection result sent by the automatic water quality detector.

Further, the method further comprises the following steps: an ammonia distillation wastewater lifting pump;

the ammonia distillation wastewater lifting pump is communicated with the transition heat dissipation water tank through an ammonia distillation wastewater pipeline so as to inject the ammonia distillation wastewater into the transition heat dissipation water tank;

a heat dissipation water tank water inlet valve is arranged at a position, close to the transition heat dissipation water tank, on the ammonia evaporation waste water pipeline;

the water inlet valve of the heat dissipation water tank is in communication connection with the interlocking alarm feedback automatic control system so as to be closed or opened according to a control instruction sent by the interlocking alarm feedback automatic control system.

Further, the method further comprises the following steps: an accident pool;

the accident pool is communicated with the transition heat dissipation water tank through the ammonia evaporation waste water pipeline, and an accident pool switching valve is arranged at a position, close to the accident pool, on the ammonia evaporation waste water pipeline;

the accident pool switching valve is in communication connection with the interlocking alarm feedback automatic control system so as to be closed or opened according to a control instruction sent by the interlocking alarm feedback automatic control system.

Further, the sampling system comprises: the diaphragm metering pump, the damper and the diluting device are sequentially communicated through a sampling pipeline;

the diaphragm metering pump is communicated with the transition heat dissipation water tank through the sampling pipeline;

the sampling pipeline of the diluting device is communicated with the automatic water quality detector;

the diaphragm metering pump is also in communication connection with the automatic water quality detector.

Further, a Y-shaped filter is further arranged on the sampling pipeline between the diaphragm metering pump and the transition cooling water tank.

Further, a back pressure valve is arranged on the sampling pipeline between the damper and the diluting device;

a water sample emptying pipe is arranged on the sampling pipeline between the back pressure valve and the damper;

and a safety valve is further arranged between the water sample emptying pipe and the back pressure valve.

Further, the diluting device comprises a diluting water inlet electromagnetic valve and a mixed liquid calibration column which are communicated with each other;

the mixed liquid standard column is connected with the back pressure valve;

the mixed liquid calibration column is communicated with the automatic water quality detector through the sampling pipeline;

the dilution water inlet electromagnetic valve is also in communication connection with the automatic water quality detector.

Further, the interlocking alarm feedback automatic control system comprises a central control computer, a PLC program controller, an on-site valve island and a central control alarm connected with the PLC program controller, wherein the central control computer, the PLC program controller and the on-site valve island are sequentially connected;

The in-situ valve island is respectively in communication connection with the accident pool switching valve and the cooling water tank water inlet valve;

the PLC is in communication connection with the automatic water quality detector.

In a third aspect, the present application provides a water quality detection method, where the water quality detection method is implemented by using the water quality detection alarm and cooling system, and the water quality detection method includes:

the automatic water quality detector acquires ammonia evaporation waste liquid flowing out of the transition heat dissipation water tank through the sampling system, and carries out water quality detection on the ammonia evaporation waste liquid;

the automatic water quality detector sends the water quality detection result of the ammonia distillation waste liquid to the interlocking alarm feedback automatic control system;

and the interlocking alarm feedback automatic control system judges whether the wastewater quality of the ammonia distillation waste liquid exceeds the standard according to a preset judging rule and the water quality detection result, if so, outputs water quality alarm information and controls the transition heat dissipation water tank to be stopped.

Further, after the controlling the transitional heat sink to be deactivated, the method further comprises:

and controlling the ammonia distillation waste liquid to flow into a preset accident pool.

According to the technical scheme, the transition heat dissipation water tank, the water quality detection alarm and cooling system and the water quality detection method provided by the application comprise the following components: the device comprises a heat dissipation groove, a water collecting groove arranged at one end of the heat dissipation groove and a water distributing groove fixedly arranged above the heat dissipation groove; the water collecting tank is used for containing ammonia distillation waste liquid, and is provided with an outflow hole which is communicated with the water distributing tank so as to guide part of the ammonia distillation waste liquid flowing out of the water collecting tank into the water distributing tank; the length direction of the water distribution groove is parallel to the length direction of the heat dissipation groove, and in the first direction, the size of the water distribution groove is smaller than the size of the heat dissipation groove so that ammonia distillation waste liquid flowing out of the water distribution groove flows into the heat dissipation groove, wherein the first direction is the direction perpendicular to the length direction of the heat dissipation groove and the direction of the notch of the heat dissipation groove respectively, the ammonia distillation waste liquid can be efficiently and reliably subjected to heat dissipation treatment without using a heat exchanger, the temperature of the ammonia distillation waste liquid in the coking wastewater treatment process is effectively reduced, the energy conservation and consumption reduction of the coking wastewater treatment process are realized, the stability of the coking wastewater treatment process can be effectively improved, and the external drainage quality requirement of the coking wastewater can be met increasingly.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a front view of a transitional heat sink in an embodiment of the present application;

FIG. 2 is a left side view of a transition heat sink in an embodiment of the present application;

fig. 3 is a schematic diagram illustrating an example of setting an overcurrent round hole in a transitional heat dissipation water tank according to an embodiment of the present application;

FIG. 4 is a schematic diagram illustrating an exemplary arrangement of overflow weirs in a transition heat sink according to an embodiment of the present disclosure;

FIG. 5 is a top view of a transition heat sink in an embodiment of the present application;

FIG. 6 is a schematic diagram of a water quality detection alarm and cooling system according to an embodiment of the present application;

FIG. 7 is a schematic flow chart of a water quality detection method according to an embodiment of the present application;

fig. 8 is a flow chart of a water quality testing method including step 400 in an embodiment of the present application.

Reference numerals:

1. An ammonia distillation wastewater lifting pump;

2. ammonia distillation waste water pipeline;

3. a transition heat radiation water tank;

3-1, a water collecting tank;

3-2, emptying the pipe;

3-3, a water distribution tank;

3-4, an overcurrent round hole;

3-5, a heat dissipation groove;

3-6, overflow weir;

3-7, upright post support;

3-8, outflow holes;

3-9, sampling port;

4. an accident pool;

5. a sampling pipe;

6. a Y-type filter;

7. a diaphragm metering pump;

8. a damper;

9. a safety valve;

10. a water sample is emptied;

11. a back pressure valve;

12. a dilution water inlet electromagnetic valve;

13. calibrating a column of the mixed liquid;

14. an automatic water quality detector;

15. a PLC program controller;

16. a central control computer;

17. a central control alarm;

18. an in situ valve island;

19. water inlet valve of heat dissipation water tank;

20. an accident pool switching valve.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

The coking wastewater is wastewater generated in coal carbonization and coal gas cooling and wastewater generated in the coking production process, and comprises water vapor generated in a coke oven in the coking production process, which is cooled by a primary cooler along with raw coke oven gas to form condensed water, namely residual ammonia water. In addition, the direct cooling water of the final cooling of the coal gas, the direct steam condensation separation water of the crude benzene processing and the direct steam condensation separation water of the fine benzene processing process; the residual ammonia water in the process of refining tar is called phenol-cyanogen waste water, also called ammonia distillation waste water, and the waste water contains a large amount of organic pollutants such as phenols, diphenyl, pyridine, indole, quinoline and the like, and also contains toxic and harmful substances such as cyanogen, inorganic fluoride ions, ammonia nitrogen and the like, so that the pollution and the chromaticity are high, and the environmental hazard is great.

It is common to "filter oil removal-dephenolization-desulfurization-ammonia distillation" prior to entry into the sewage station. According to the green operation production concept, the coking wastewater treatment should be taken care of from the source, while the ammonia distillation wastewater is a strand of wastewater with the largest water quantity and highest difficulty in the coking wastewater (the coking plant also contains some other wastewater, such as factory domestic wastewater, ground flushing water, production impurity drainage and the like, the proportion of which is small, and the pollution index is low), so that the water quality index of the strand of wastewater entering the sewage station is controlled, and the ammonia distillation wastewater is very important for the stable and efficient operation of the sewage station.

Tracking the operation of most coking plant sewage stations shows that about 80% of system fluctuation impact is caused by the fluctuation of the water quality of the ammonia distillation wastewater, and the water quality of the effluent of a normal ammonia distillation section is shown in the following table 1:

TABLE 1 conventional Water quality Meter for Ammonia distillation wastewater

In the actual operation process, the ammonia distillation wastewater often has the problems of CODCr and ammonia nitrogen exceeding standard caused by lower operation temperature and pH value of an ammonia distillation tower, the operation stability of a biochemical system is seriously damaged (especially nitrifying bacteria are impacted, the ammonia nitrogen removal rate is linearly reduced), operators often lack timely feedback of data (long offline detection period of a laboratory), and the ammonia distillation wastewater is found to enter the system in a large amount when the system is impacted, so that the recovery period is long and the recovery cost is high.

At present, domestic coking plants do not have measures specially aiming at real-time monitoring of the incoming water quality of ammonia distillation wastewater, and the common practice is that operators in the ammonia distillation section of each plant strictly control the temperature and the pH value of an ammonia distillation tower, and the ammonia distillation wastewater is directly discharged to a sewage treatment station after meeting a certain ammonia water recovery rate, but in actual operation, the quality of discharged ammonia distillation wastewater is often out of standard due to various reasons, and the discharged water is usually discontinuously discharged, so that the water quality and the water quantity show irregular fluctuation. The sewage station is generally limited to a water collecting well or an adjusting tank with small adjusting capacity, is used for collecting ammonia distillation wastewater, and is lifted by a water pump to enter a pretreatment facility for treatment (such as an oil separation section and an air floatation section). The ammonia distillation wastewater quality is detected through laboratory personnel manual sampling, the degree of automation of water quality monitoring measures is poor, detection data is lagged, the ammonia distillation wastewater quality entering a sewage station cannot be fed back in time, short time and high load impact of a system are easily caused, especially in night shift operation, once the impact is formed, the personnel in the sewage station inconveniently take measures in time, the subsequent treatment unit of the sewage system is caused to treat the wastewater not to reach the standard, the quality of discharged water is monitored and uploaded in real time along with the increase of environmental protection supervision force, and excessive fine is frequently found, so that the operation cost is increased for coking enterprises.

In addition, the sewage station of the coking plant takes pretreatment technologies such as oil removal, air floatation and the like and a biochemical method as main flow processes, when the incoming water temperature of coking wastewater is too high, the oil removal and air floatation treatment effect of a pretreatment unit is often reduced (the temperature is easy to control to be lower than 40 ℃), the temperature of a water body entering the biochemical unit is also influenced, the activity of biochemical sludge is closely related to the environmental temperature (the temperature is controlled to be preferably 25-35 ℃), and therefore, the control of the operating temperature has important significance on the operating stability of the sewage station. Aiming at the measure of controlling the water temperature of the ammonia distillation wastewater, conventionally, the ammonia distillation wastewater is adopted in China and then a primary heat exchanger or an air cooling tower is additionally arranged for cooling treatment after entering a sewage station.

The working principle of the heat exchanger is as follows: the energy-saving equipment for transferring heat between two or more fluids with different temperatures is characterized by that the heat is transferred from fluid with higher temperature to fluid with lower temperature, so that the fluid temperature can be reached to the index defined by flow path so as to meet the requirements of technological condition. However, the operation thereof has the following problems: the heat exchange pipeline is often blocked by residual tar substances in ammonia distillation wastewater, the existing light benzene (crude benzene) and wash oil in the crude benzene working procedure of a coking plant are uniformly mixed to be used as a cleaning agent for each cleaning, a centrifugal pump is used as power, the cleaning agent is fed from the lower part of a blocked flow passage of a heat exchanger, and then flows out from the upper part, so that the cleaning agent circulation is formed. Every maintenance is faced with complicated procedures, the cleaning agent is harmful to workers, strict protective measures are needed, and great inconvenience is brought to production operation [1] (Hu Gu, wang Ying. Analysis and treatment of blockage cause of ammonia distillation heat exchanger [ J ], metallurgy cluster, 2014.12 (6): 12-14).

The working principle of the air cooling tower is as follows: the ammonia-distilling high-temperature water is lifted by a water pump, the circulating water is pressurized to the water sowing system of the cooling tower through a pipeline, a transverse throat, a curved throat and a central throat, water is uniformly sown and sprayed on the filler through small holes on the water sowing pipe, dry low-enthalpy air enters the tower from the bottom into a wind net under the action of a fan, water film and air are formed when hot water flows through the surface of the filler to perform heat exchange, high-humidity high-enthalpy hot air is pumped out from the top, cooling water is dripped into a bottom basin, and flows into a water collecting well through a water outlet pipe. But its operation has two problems: (1) the temperature reduction amplitude cannot be effectively controlled, particularly in winter, the temperature is reduced to be too low, so that steam heating is required for subsequent biochemistry; (2) the filler of the air cooling tower is seriously blocked, so that the proliferation of the greasy filth green algae is easily caused in summer, the peculiar smell is also relatively large due to forced ventilation, the peculiar smell is easily diffused to the periphery, and the sense and the air quality of a factory area are influenced. And the two cooling measures all need to purchase special equipment, and the disposable investment and the operation maintenance cost of the heat exchanger and the air cooling tower are high.

In summary, developing a pretreatment control system combining water quality monitoring and cooling effects for ammonia distillation wastewater is critical to the operation of a sewage station.

The application also aims to provide application of the transition heat dissipation water tank in treatment of ammonia distillation wastewater. The transition heat dissipation water tank is divided into: the material of the water collecting tank, the water distributing tank and the heat dissipating tank is SS316L, and the bottom of the side surface of the water collecting tank is provided with an emptying valve and a pipeline for maintaining and emptying water samples, and meanwhile, the water collecting tank can be used as an overrun pipeline when excessive cooling is not needed in winter, and part of high-temperature ammonia distillation wastewater is directly discharged into a water collecting well/regulating tank. The water distribution tank is used for guiding water discharged from the water collection tank into the heat dissipation tank, phi 50mm round holes are uniformly formed in two sides of the water distribution tank, the hole forming positions are located in the middle of the vertical plates of the water distribution tank, the slot forming distance is determined according to the length of the tank and the water passing amount, submerged water distribution is guaranteed, and the support upright post is arranged at the bottom of the water distribution tank to prevent large-span deformation. The heat dissipation groove is used for receiving water from the water distribution groove, the evaporation heat exchange amount is increased by enlarging the contact area of ammonia evaporation wastewater and air, natural cooling is realized, the heat dissipation groove is designed to overflow water from two sides, the overflow weir is a 45-degree V-shaped weir plate, the heat dissipation groove is usually erected at the top of a water collection well/regulating tank of a sewage station, the bottom plate is a thickened steel plate, and the bottom is reinforced by channel steel.

The utility model aims at providing a system for ammonia distillation waste water real-time water quality testing is reported to police and is cooled down. The application belongs to the technical field of industrial wastewater treatment, and relates to a system for real-time water quality detection, alarm and cooling of ammonia distillation wastewater. The system consists of a transition heat radiation water tank, a sampling system, an automatic detection system and an exceeding feedback system. The transition heat dissipation water tank is made of stainless steel, is a groove-shaped wide-surface shallow water-shaped container, is mainly used for receiving ammonia distillation wastewater to be treated and cooling the ammonia distillation wastewater, provides a real-time water source for an automatic water quality detection system through a sampling system with a dilution function, carries out information feedback on data detected by the automatic water quality detection system through a PLC (programmable logic controller), a computer, an alarm and the like, and can warn an operator to carry out emergency treatment as soon as possible when the quality of the ammonia distillation wastewater exceeds the standard, and meanwhile, the system automatically switches an accident valve to enable the exceeding water to be discharged into an accident pool so as to avoid impact on a sewage system.

Specifically, be used for evaporating real-time water quality testing of ammonia waste water warning and cooling system, including the transition heat dissipation basin of arranging in order: one of the main body devices of the system is made of stainless steel 316L, is a groove-shaped wide-surface shallow water container, and has the functions of mainly receiving ammonia evaporation wastewater to be treated, cooling the ammonia evaporation wastewater as a transition heat dissipation device and simultaneously providing a real-time water source for automatic water quality detection.

Sampling system: the device consists of a diaphragm metering pump and a water sample diluting device, and provides a water sample for an automatic water quality detection system, and the diluting device is connected with a tap water pipe network. The diaphragm metering pump in the sampling system is a diaphragm metering pump, can accurately control liquid output, and is synchronously matched with a Y-shaped filter, a safety valve, a back pressure valve and a damper. The Y-shaped filter is used for water quality security filtration before entering the pump, and prevents the diaphragm metering pump and the subsequent automatic water quality detector from being blocked by the suspended matters in the incoming water. The safety valve is used for detecting that the pipeline behind the pump is automatically opened when the pump pressure rises due to blockage, so that the diaphragm metering pump is protected. The back pressure valve and the damper are used for adjusting the pressure of the water sample pipeline to be maintained in a constant range, so that the measured pump liquid amount is ensured to be constant. The water sample diluting device adopts factory living tap water as a diluting water source CODCr, is low in cost and easy to obtain, is fully mixed with ammonia distillation wastewater in a special calibration column, is provided with an electromagnetic valve which is interlocked with a PLC program controller, and is matched with a diaphragm metering pump to automatically start and stop water taking.

Automatic detection system: the automatic ammonia distillation system consists of an automatic water quality detector, a PLC program controller, a computer, an alarm and the like, and is used for detecting the real-time ammonia distillation wastewater quality, judging whether the water quality exceeds the standard or not through program analysis of the detected value and providing an alarm function. The automatic detector can be a water quality detector with a remote transmission function which is widely used at home and abroad. The PLC, the computer and the alarm can be coupled according to the detection data of the detector, and a control instruction is output to finish monitoring the quality of the ammonia distillation wastewater.

And (3) an out-of-standard feedback system: the system consists of a PLC program controller, an on-site valve box and a water inlet valve, when the PLC system judges that the water quality exceeds the standard, the valves entering the transition hot water tank and the accident pool can be switched in real time, so that the exceeding water is discharged into the accident pool, and the impact on the system is avoided. And in the out-of-standard feedback system, an on-site valve island is arranged, signals of a PLC program controller are received, and the signals are fed back to an electric/pneumatic valve on an ammonia evaporation wastewater inlet pipeline to realize forward switching of the waterway.

The following examples are provided to illustrate the invention in detail.

In order to effectively and reliably dissipate heat of ammonia distillation waste liquid without using a heat exchanger, effectively reduce the temperature of the ammonia distillation waste liquid in the coking wastewater treatment process, and realize energy saving and consumption reduction of the coking wastewater treatment process, the application provides an embodiment of a transition heat dissipation water tank 3, see fig. 1, the transition heat dissipation water tank 3 specifically comprises the following contents: the heat dissipation device comprises a heat dissipation groove 3-5, a water collecting groove 3-1 arranged at one end of the heat dissipation groove 3-5 and a water distributing groove 3-3 fixedly arranged above the heat dissipation groove 3-5; the water collecting tank 3-1 is used for containing ammonia distillation waste liquid, the water collecting tank 3-1 is provided with an outflow hole 3-8, and the outflow hole 3-8 is communicated with the water distributing tank 3-3 to guide part of the ammonia distillation waste liquid flowing out of the water collecting tank 3-1 into the water distributing tank 3-3; the length direction of the water distribution groove 3-3 is parallel to the length direction of the heat dissipation groove 3-5, and in a first direction, the size of the water distribution groove 3-3 is smaller than the size of the heat dissipation groove 3-5 so that ammonia distillation waste liquid flowing out of the water distribution groove 3-3 flows into the heat dissipation groove 3-5, wherein the first direction is a direction perpendicular to the length direction of the heat dissipation groove 3-5 and the direction of the notch of the heat dissipation groove 3-5 respectively.

In a specific embodiment, in order to effectively radiate the ammonia distillation waste liquid, water quality detection of the ammonia distillation waste liquid can be realized, and a sampling port 3-9 is arranged on one side surface of the water collecting tank 3-1 far away from the outflow hole 3-8 so as to detect water quality of the ammonia distillation waste liquid flowing out through the sampling port 3-9; an emptying pipe 3-2 is further arranged on one side surface, far away from the outflow hole 3-8, of the water collecting tank 3-1, and the emptying pipe 3-2 is arranged close to the bottom of the water collecting tank 3-1.

Referring to fig. 2, in a specific embodiment, in order to effectively improve the reliability and accuracy of the part of the ammonia distillation waste liquid flowing out of the water collecting tank 3-1 flowing into the water distributing tank 3-3, so as to further improve the reliability of the heat dissipation treatment of the ammonia distillation waste liquid, the outflow hole 3-8 is disposed on the water collecting tank 3-1 at a position higher than the water distributing tank 3-3, and the outflow hole 3-8 is disposed opposite to the notch of the water distributing tank 3-3.

In a specific embodiment, referring to fig. 3, in order to effectively improve the reliability and accuracy of the flow of the ammonia distillation waste liquid flowing out of the water distribution tank 3-3 into the heat dissipation tank 3-5, so as to further improve the reliability of heat dissipation treatment of the ammonia distillation waste liquid, a plurality of overflow round holes 3-4 are arranged on the side wall extending along the length direction in the water distribution tank 3-3; the through-flow circular holes 3-4 are sequentially formed along the length direction of the water distribution groove 3-3.

In a specific embodiment, referring to fig. 4, in order to effectively improve the reliability and accuracy of the ammonia distillation waste liquid overflowing the heat dissipation groove 3-5 flowing into an external water collecting well or an adjusting tank, so as to further improve the reliability of heat dissipation treatment of the ammonia distillation waste liquid, an overflow weir 3-6 is arranged at the edge of the notch of the heat dissipation groove 3-5; the top of the overflow weir 3-6 is saw-toothed so that the ammonia distillation waste liquid overflowed from the heat dissipation groove 3-5 flows into an external water collecting well or an adjusting tank.

In a specific embodiment, in order to effectively improve the reliability of the fixed installation of the water distribution tank 3-3 and further improve the reliability of heat dissipation treatment of the ammonia distillation waste liquid, the bottom of the water distribution tank 3-3 is provided with a plurality of upright supports 3-7; the bottoms of the upright post supports 3-7 are fixedly arranged in the heat dissipation grooves 3-5.

In a specific embodiment, in order to effectively ensure that the ammonia distillation waste liquid flowing out of the water distribution tank 3-3 can uniformly flow into the heat dissipation tank 3-5 from two sides of the water distribution tank 3-3, so as to further improve the reliability of heat dissipation treatment of the ammonia distillation waste liquid, referring to fig. 5, two side walls extending in the length direction in the water distribution tank 3-3 are respectively equal to the distance between two side walls extending in the length direction in the heat dissipation tank 3-5; two side walls of the water collecting tank 3-1 adjacent to the side wall provided with the outflow hole 3-8 are respectively equal to the distance between two side walls of the heat dissipation tank 3-5 extending along the length direction.

It is understood that in the transitional heat dissipation water tank 3, the total height of the V-shaped overflow weirs at the two sides of the heat dissipation tank 3-5 is 150mm, and 45-degree weir teeth are arranged at the position of the top 50 mm.

Specifically, the transition heat dissipation water tank 3 consists of a water collecting tank 3-1, a water distributing tank 3-3 and a heat dissipation tank 3-5.

Wherein, the water collecting tank 3-1 and the heat dissipation tank 3-5 are at the same bottom, the water collecting tank 3-1 is positioned at the center of one end of the heat dissipation tank 3-5, the side wall of the middle lower part is provided with an emptying pipe 3-2, and the emptying pipe 3-2 is provided with a manual valve; the side wall of the upper middle part of the water collecting tank 3-1 is provided with a discharge hole 3-8 which is communicated with the water distributing tank 3-3;

wherein, the middle parts of the two side walls of the water distribution tank 3-3 are provided with through-flow round holes 3-4, and sewage falls into the heat dissipation tank 3-5 through the through-flow round holes 3-4; one end of the water distribution tank 3-3 is connected with the water collection tank 3-1, the water distribution tank 3-3 is arranged right above the heat dissipation tank 3-5, the bottom of the water distribution tank 3-3 is provided with the upright post support 3-7, and the upright post support 3-7 is welded on the bottom plate of the heat dissipation tank 3-5;

wherein overflow weirs 3-6 are arranged on two side walls of the heat dissipation groove 3-5, and sewage falls into a water collecting well/regulating tank below through gravity of the overflow weirs 3-6.

In addition, in the transition heat sink 3, the water collection tank 3-1 is preferably square in cross section.

In the transition heat dissipation water tank 3, the cross section of the water distribution tank 3-3 is preferably square.

In the transition heat dissipation water tank 3, preferably, the top of the water distribution tank 3-3 is arranged at the lower edge of the outflow hole 3-8.

In the transition heat sink 3, preferably, the height of the through-flow circular holes 3-4 is located at a third from the top.

In the transitional heat dissipation water tank 3, preferably, the aperture of the through-flow round holes 3-4 on the two sides of the water distribution tank 3-3 is 50mm, and the center distance between the holes is 150 mm.

That is, the sewage firstly flows into the water collecting tank 3-1, a small part of the sewage enters the automatic detection system through the sampling port 3-9 for water quality monitoring, the other large part of the sewage flows into the water distributing tank 3-3 through the outflow hole 3-8, flows into the heat dissipation tank 3-5 through the reserved overflow round hole 3-4 on the water distributing tank 3-3, and falls into the water collecting well/regulating tank below the tank body through the overflow weir 3-6 by gravity after the heat dissipation tank 3-5 is contacted with air for staying. The emptying pipe 3-2 is used for emptying and short flow of the water collection sump 3-1.

Based on the embodiment of the transition heat dissipation water tank, in order to carry out high-efficient and reliable heat dissipation treatment to the ammonia distillation waste liquid, and can be right the ammonia distillation waste liquid carries out high-efficient, high accuracy and highly automated water quality testing and reports to the police automatic control and handle, and then can effectively promote coking wastewater treatment process's stability and intelligent degree, and can satisfy the outer drainage quality requirement of growing coking wastewater, this application still provides a water quality testing warning and cooling system, see fig. 6, include: the sampling system, the automatic water quality detector 14, the interlocking alarm feedback automatic control system and the transition heat radiation water tank 3; the sampling system is respectively communicated with the automatic water quality detector 14 and the transition heat dissipation water tank 3 so as to transmit ammonia evaporation waste liquid flowing out of the transition heat dissipation water tank 3 to the automatic water quality detector 14 for water quality detection; the interlocking alarm feedback automatic control system is respectively connected with the automatic water quality detector 14 and the transition heat dissipation water tank 3 to judge whether to send out water quality alarm information and control the transition heat dissipation water tank 3 to be disabled according to the received water quality detection result sent by the automatic water quality detector 14.

In one embodiment, the water quality detection alarm and cooling system further specifically comprises the following contents:

(1) Ammonia distillation wastewater lift pump 1: the ammonia distillation wastewater lifting pump 1 is communicated with the transition heat dissipation water tank 3 through an ammonia distillation wastewater pipeline 2 so as to inject ammonia distillation wastewater into the transition heat dissipation water tank 3; a heat radiation water tank water inlet valve 19 is arranged at a position, close to the transition heat radiation water tank 3, on the ammonia evaporation waste water pipeline 2; the heat dissipation water tank water inlet valve 19 is in communication connection with the interlocking alarm feedback automatic control system so as to be closed or opened according to a control instruction sent by the interlocking alarm feedback automatic control system.

(2) Accident pool 4: the accident pool 4 is communicated with the transition heat radiation water tank 3 through the ammonia evaporation waste water pipeline 2, and an accident pool switching valve 20 is arranged at a position, close to the accident pool 4, on the ammonia evaporation waste water pipeline 2; the accident pool switching valve 20 is in communication connection with the interlock alarm feedback automatic control system to be closed or opened according to a control instruction issued by the interlock alarm feedback automatic control system.

In one embodiment, the sampling system in the water quality detection alarm and cooling system specifically comprises the following contents:

a diaphragm metering pump 7, a damper 8 and a diluting device which are sequentially communicated through a sampling pipeline 5; the diaphragm metering pump 7 is communicated with the transition heat dissipation water tank 3 through the sampling pipeline 5; the dilution device the sampling pipeline 5 is communicated with the automatic water quality detector 14; the diaphragm metering pump 7 is also in communication with the automatic water quality detector 14.

In one embodiment, a Y-shaped filter 6 is further arranged on the sampling pipeline 5 between the diaphragm metering pump 7 and the transition heat radiation water tank 3 in the water quality detection alarm and cooling system.

A back pressure valve 11 is also arranged on the sampling pipeline 5 between the damper 8 and the diluting device; a water sample emptying pipe 10 is arranged on the sampling pipeline 5 between the back pressure valve 11 and the damper 8; a safety valve 9 is also arranged between the water sample emptying pipe 10 and the back pressure valve 11.

The diluting device comprises a diluting water inlet electromagnetic valve 12 and a mixed solution calibrating column 13 which are communicated with each other; the mixed liquor calibration column 13 is connected with the back pressure valve 11; the mixed liquor calibration column 13 is communicated with the automatic water quality detector 14 through the sampling pipeline 5; the dilution water inlet solenoid valve 12 is also in communication with the automatic water quality detector 14.

The interlocking alarm feedback automatic control system comprises a central control computer 16, a PLC program controller 15 and a local valve island 18 which are sequentially connected, and a central control alarm 17 connected with the PLC program controller 15; the in-situ valve island 18 is respectively connected with the accident pool switching valve 20 and the cooling water tank water inlet valve 19 in a communication manner; the PLC 15 is in communication connection with the automatic water quality detector 14.

Specifically, the application still provides a system that is used for evaporating real-time water quality testing of ammonia waste water to report to police and cooling, and this system includes: the device comprises a transition heat radiation water tank 3, a sampling system, an automatic water quality detector 14 and an interlocking alarm feedback automatic control system;

the ammonia distillation wastewater enters a sampling pipeline 5 through a sampling port 3-9 of the transition heat radiation water tank 3, and sequentially enters a mixed solution calibration column 13 of a diluting device through a Y-type filter 6 and a diaphragm metering pump 7, and is diluted with tap water at a diluting water inlet electromagnetic valve 12 according to a certain multiple; the outlet of the diaphragm metering pump 7 is respectively connected with a damper 8, a safety valve 9, a water sample emptying pipe 10 and a back pressure valve 11 through pipelines; the diluting device consists of a mixed solution calibrating column 13 and a diluting water inlet electromagnetic valve 12; the water outlet of the mixed liquid calibration column 13 is connected with the sample inlet of the automatic water quality detector 14, and the waste liquid after the measurement of the automatic water quality detector 14 is directly emptied into a sewage system; the detection data of the automatic water quality detector 14 are transmitted to the PLC 15 through a data line, and action instructions are respectively transmitted to the central control alarm 17 and the on-site valve island 18 through conversion signals; according to the specific embodiment of the application, in the ammonia distillation wastewater real-time water quality detection alarm and cooling system, preferably, a water tank made of stainless steel 316L is selected as heat dissipation equipment for the ammonia distillation wastewater.

It can be understood that in the ammonia distillation wastewater real-time water quality detection alarm and cooling system, the transition heat dissipation water tank 3 has the function of providing real-time water sample for the automatic water quality detector 14; the diaphragm metering pump 7 can be adopted as a diaphragm metering pump of the automatic water quality detector 14; the dilution device is added in the sampling process to synchronously and accurately dilute the high-concentration water sample, so that the range of the automatic water quality detector 14 is met; introducing the water sample diluting device and the automatic water quality detector 14 into the real-time monitoring process of the water quality of the ammonia distillation wastewater; and the water quality detection data and the control system integrate an out-of-standard alarm and feedback action mechanism, and the automatic switching of the out-of-standard incoming water is finished under the control of the PLC 15.

That is, the ammonia distillation wastewater is sent to the water collecting tank 3-1 of the transition heat dissipation water tank 3 by the ammonia distillation wastewater lifting pump 1, most of the ammonia distillation wastewater flows into the water distribution tank 3-3 through the outflow hole 3-8, flows to the heat dissipation tank 3-5 through the reserved through hole 3-4 on the water distribution tank 3-3, and after the heat dissipation tank 3-5 contacts with air, the wastewater falls down to the water collecting well/regulating tank below the tank body through the gravity of the overflow weir 3-6, and the purpose of water body cooling is achieved by baffling and heat dissipation through contact with air. When the temperature is low in winter, in order to avoid excessive temperature reduction, the valve on the emptying pipe 3-2 can be manually opened, the flow rate is adjusted, and a part of short flow directly enters the water collecting well/regulating tank.

The other little ammonia distillation wastewater enters the sampling pipeline 5 through the sampling port 3-9, then the water sample to be measured is pumped into the mixed liquid calibration column 13 through the Y-shaped filter 6 and the diaphragm metering pump 7 in sequence, and at the same time, the diluting water inlet electromagnetic valve 12 is opened, and water is also fed into the mixed liquid calibration column 13, so that the ammonia distillation wastewater water sample is diluted, and the COD concentration of the water sample to be measured is realized _Cr The ammonia nitrogen, the pH value and the temperature are maintained in the range of the automatic water quality detector, the diluted water sample to be measured enters the automatic water quality detector 14, and the water sample can meet the requirements of COD after customization _Cr And the detection equipment for indexes such as ammonia nitrogen, pH, temperature and the like is used for detecting and analyzing the wastewater sample, and discharging the wastewater sample to a sewage station for treatment through an emptying port. The detected index data is transmitted into the PLC programThe sequence controller 15 is used for judging whether the water quality exceeds the standard after the detection data and the dilution times are calculated by combining the central control computer 16, the PLC program controller 15 transmits an alarm signal to the central control alarm 17 when the water quality exceeds the standard, prompts an operator to feed back the exceeding information to the ammonia evaporation section, meanwhile, the PLC program controller 15 converts the exceeding signal into a valve switching signal through the on-site valve island 18, the water inlet valve 19 of the heat radiation water tank is closed, the accident pool switching valve 20 is opened, the system is timely cut out of the exceeding ammonia evaporation waste water, and the exceeding sewage in the accident pool is transferred to the sewage system for a small amount and a plurality of times through the accident lifting water pump.

Based on the water quality detection alarm and cooling system, in order to perform high-efficiency, high-accuracy and high-automation water quality detection and alarm automatic control treatment on the ammonia distillation waste liquid, stability and intelligent degree of a coking wastewater treatment process can be effectively improved, and increasing coking wastewater external drainage requirements can be met, the application also provides an embodiment of a water quality detection method, and referring to fig. 7, the water quality detection method specifically comprises the following contents:

step 100: the automatic water quality detector acquires ammonia evaporation waste liquid flowing out of the transition heat dissipation water tank through the sampling system, and carries out water quality detection on the ammonia evaporation waste liquid;

step 200: the automatic water quality detector sends the water quality detection result of the ammonia distillation waste liquid to the interlocking alarm feedback automatic control system;

step 300: and the interlocking alarm feedback automatic control system judges whether the wastewater quality of the ammonia distillation waste liquid exceeds the standard according to a preset judging rule and the water quality detection result, if so, outputs water quality alarm information and controls the transition heat dissipation water tank to be stopped.

In addition, referring to fig. 8, in order to further improve the stability and the intelligence degree of the coking wastewater treatment process, the following steps may be further included after step 300:

Step 400: and controlling the ammonia distillation waste liquid to flow into a preset accident pool.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. The orientation or positional relationship indicated by the terms "upper", "lower", etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description and to simplify the description, and are not indicative or implying that the apparatus or elements in question must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present invention, numerous specific details are set forth. It may be evident, however, that the embodiments of the present invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description. Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be interpreted as reflecting the intention: i.e., the claimed invention requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present invention is not limited to any single aspect, nor to any single embodiment, nor to any combination and/or permutation of these aspects and/or embodiments. Moreover, each aspect and/or embodiment of the invention may be used alone or in combination with one or more other aspects and/or embodiments.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention, and are intended to be included within the scope of the appended claims and description.

Claims

1. A transition heat sink, comprising: the device comprises a heat dissipation groove, a water collecting groove arranged at one end of the heat dissipation groove and a water distributing groove fixedly arranged above the heat dissipation groove;

2. The transition heat sink as claimed in claim 1, wherein a sampling port is provided on a side of the water collection tank away from the outflow hole to perform water quality detection on the ammonia distillation waste liquid flowing out through the sampling port;

3. The transition heat sink as claimed in claim 1, wherein the outflow hole is provided at a position higher than the water distribution groove on the water collection tank, and the outflow hole is provided opposite to a notch of the water distribution groove.

4. The transition heat dissipation sink as set forth in claim 1, wherein a plurality of through-flow circular holes are provided on a side wall extending in a length direction in the water distribution sink;

5. The transition heat sink of claim 1, wherein an overflow weir is provided at the edge of the notch of the heat sink;

6. The transition heat dissipation sink of claim 1, wherein a plurality of upright supports are provided at the bottom of the water distribution sink;

7. The transitional heat dissipation sink of claim 1, wherein two side walls extending in a length direction in the water distribution channel are respectively equal to a distance between two side walls extending in the length direction in the heat dissipation channel;

8. A water quality detection alarm and cooling system is characterized by comprising: sampling system, automatic water quality detector, interlocking alarm feedback automatic control system, and transition heat radiation water tank according to any one of claims 1 to 7;

9. The water quality detection alarm and cooling system of claim 8, further comprising: an ammonia distillation wastewater lifting pump;

10. The water quality detection alarm and cooling system of claim 9, further comprising: an accident pool;

11. The water quality detection alarm and cooling system of claim 8, wherein the sampling system comprises: the diaphragm metering pump, the damper and the diluting device are sequentially communicated through a sampling pipeline;

12. The water quality detection alarm and cooling system according to claim 11, wherein a Y-shaped filter is further arranged on the sampling pipe between the diaphragm metering pump and the transition heat radiation water tank.

13. The water quality detection alarm and cooling system according to claim 11, wherein a back pressure valve is further arranged on the sampling pipeline between the damper and the diluting device;

14. The water quality detection alarm and cooling system according to claim 13, wherein the dilution device comprises a dilution water inlet electromagnetic valve and a mixed liquid calibration column which are communicated with each other;

the mixed liquid standard column is connected with the back pressure valve;

15. The water quality detection alarm and cooling system according to claim 10, wherein the interlocking alarm feedback automatic control system comprises a central control computer, a PLC program controller and an on-site valve island which are connected in sequence, and a central control alarm connected with the PLC program controller;

16. A water quality detection method, characterized in that the water quality detection method is implemented by using the water quality detection alarm and cooling system according to any one of claims 8 to 15, and the water quality detection method comprises:

17. The water quality testing method of claim 16, further comprising, after said controlling said transition heat sink to be deactivated: