Boiler continuously-discharged wastewater recycling heat supply system

Abstract

The utility model discloses a boiler continuously-discharged waste water recovery heat supply system, relates to the technical field of boiler continuously-discharged waste water recovery, and aims to improve the problems that in the process of recovering waste water of a boiler, part of devices are used for collecting waste water and carrying out heat treatment on the waste water, so that the energy consumption is increased in the aspect of heat exchange; the waste water heat exchange device comprises a boiler, a first connecting pipe arranged on one side of the boiler and a continuous drainage flash tank fixedly installed on one side of the first connecting pipe, a steam turbine is connected to one side of the continuous drainage flash tank, and a second connecting pipe is fixedly installed on the other side of the continuous drainage flash tank; and one side of the second connecting pipe is fixedly connected with a cyclone separator. According to the utility model, steam generated by the steam turbine and waste water generated by the boiler are mixed and collected through the continuous drainage flash tank, and are sprayed and atomized through the centrifugal atomizing nozzle in the continuous drainage flash tank and are mixed with the steam generated by the steam turbine.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler wastewater recovery, in particular to a boiler wastewater recovery heating system. Background Art

[0002] The boiler continuous discharge wastewater recovery and heating system is an efficient and environmentally friendly energy utilization system. Its core is to recover and reuse the heat energy of the wastewater generated in the continuous discharge process of the boiler. This system aims to improve energy utilization efficiency, reduce energy consumption, reduce production costs, and achieve environmental protection and emission reduction. In most cases, the wastewater is discharged into the interior of the continuous discharge expansion tank and flash evaporated through the continuous discharge expansion tank. After the flash evaporation is completed, part of it is recovered into the deaerator, and the rest is discharged into the ditch for collection, and the heat of the wastewater is reused for a second time.

[0003] The Chinese utility model announcement number is CN209540858U. The utility model discloses a boiler continuous discharge wastewater treatment and heat recovery system, which guides wastewater into a wastewater collection tank through a continuous discharge conduit, and simultaneously connects a sewage circulation pool with the wastewater collection tank. The wastewater is heat-conducted inside the wastewater collection tank through heat-conducting fins and heat-conducting oil, and hot steam is collected for use.

[0004] There are at least the following problems in this technology: the boiler wastewater treatment and heat recovery system only conducts heat treatment on the wastewater through heat-conducting fins and heat-conducting oil, and collects the subsequent hot steam, which not only generates a large amount of energy consumption in producing hot steam, but also has a poor heat-conducting effect of the heat-conducting fins and heat-conducting oil in producing hot steam, and the utilization rate of the hot steam is not high. Therefore, a boiler wastewater recovery and heating system is now proposed. Utility Model Content

[0005] In order to improve the process of boiler wastewater recovery, some devices collect wastewater and perform heat treatment on the wastewater, which not only increases the energy consumption in heat exchange, but also has unsatisfactory efficiency in wastewater heat exchange. The utility model provides a boiler wastewater recovery and heating system.

[0006] The utility model provides a boiler wastewater recovery and heating system, which adopts the following technical scheme: a boiler wastewater recovery and heating system, comprising a boiler, a first connecting pipe arranged on one side of the boiler and a water discharge expansion tank fixedly installed on one side of the first connecting pipe, one side of the water discharge expansion tank is connected to a steam turbine, and the other side of the water discharge expansion tank is fixedly installed with a second connecting pipe, and one side of the second connecting pipe is fixedly connected with a cyclone separator.

[0007] By adopting the above technical solution, the waste water inside the boiler is discharged into the interior of the water-conducting expansion tank through the first connecting pipe, and at the same time, the hot steam generated by the operation of the steam turbine is also discharged into the interior of the water-conducting expansion tank, so that the water-conducting expansion tank collects the steam and liquid together, and the treated steam is discharged into the interior of the cyclone separator, and more than 70%-80% of the particulate matter in the steam is separated through the cyclone separator.

[0008] Optionally, a baffle is fixedly installed inside the drainage expansion container, and a plurality of groups of centrifugal atomizing nozzles are fixedly installed on one side of the baffle.

[0009] By adopting the above technical solution, the waste water generated by the boiler is centrifugally vaporized through a centrifugal atomizing nozzle and mixed with the steam of the turbine at the same time.

[0010] Optionally, a third connecting pipe is fixedly installed at the end of the cyclone separator, a first adsorption box is fixedly installed on one side of the third connecting pipe, a fourth connecting pipe is fixedly installed on one side of the third connecting pipe, and the other end of the fourth connecting pipe is fixedly connected to a second adsorption box.

[0011] By adopting the above technical solution, the impurities such as phosphate, calcium and magnesium ion deposits, and silica are further adsorbed by the adsorption materials inside the first adsorption box and the second adsorption box, and the removal rate of crystals in the steam after adsorption can reach up to about 90%.

[0012] Optionally, the first adsorption box and the second adsorption box are both provided with a high-tech purification material adsorption filter element filling layer, and a fifth connecting pipe is provided on one side of the first adsorption box, and the first adsorption box and the second adsorption box form a connecting structure through the fifth connecting pipe.

[0013] By adopting the above technical solution, the high-tech purification material adsorption filter element filler layer can further adsorb impurities such as phosphates, calcium and magnesium ion deposits, and silica, and the removal rate of crystals in the steam after adsorption can reach up to about 90%.

[0014] Optionally, the first adsorption box and the second adsorption box are fixedly connected to a rectifying box on a side away from the cyclone separator, a plurality of groups of manifolds are fixedly installed at the front end of the rectifying box, and a filter element is fixedly installed inside the manifold.

[0015] By adopting the above technical solution, the rectifier box can collect the adsorbed steam, and discharge it to the heating users after secondary filtration through the shunt pipe and the filter element inside the shunt pipe.

[0016] Optionally, the filter element is a filter element made of amino composite nanomaterials.

[0017] By adopting the above technical solution, the amino composite nanomaterial has a highly precise filtering effect, so that the steam purification rate after the steam leaves the diversion pipe reaches more than 97%.

[0018] Optionally, a ground drain pipe is provided at the other end of the water discharge expansion tank.

[0019] By adopting the above technical solution, the ground drain pipe can discharge part of the wastewater inside the drainage expansion tank.

[0020] In summary, the utility model has the following beneficial effects:

[0021] 1. The utility model discharges the waste water in the boiler to the inside of the water-conducting expansion tank through the first connecting pipe, and at the same time discharges the hot steam generated by the steam turbine when it is working to the inside of the water-conducting expansion tank, so that the water-conducting expansion tank collects the gas and the liquid together, and the centrifugal atomizing nozzle inside the water-conducting expansion tank centrifugally atomizes the waste water and discharges it to the inside of the water-conducting expansion tank, and the steam of this part is mixed with the steam of the steam turbine and then discharged to the inside of the cyclone separator, and more than 70%-80% of the particles in the gas are separated through the cyclone separator.

[0022] 2. The utility model performs secondary and tertiary filtration on the steam filtered by the cyclone separator through the first adsorption box, the second adsorption box and the filter element in the subsequent diversion pipe. The steam purification degree after the final filtration by the filter element can reach more than 97%. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the utility model.

[0024] Figure 2 It is a structural schematic diagram of a cyclone separator and a first adsorption box and a second adsorption box of the utility model.

[0025] Figure 3 It is a schematic diagram of the structure inside the first adsorption box of the utility model.

[0026] Figure 4 It is a schematic diagram of the structure inside the water discharge expansion container of the utility model.

[0027] Description of reference numerals:

[0028] 1. Boiler; 2. First connecting pipe; 3. Drainage expansion tank; 4. Steam turbine; 5. Second connecting pipe; 6. Cyclone separator; 7. Shielding plate; 8. Centrifugal atomizing nozzle; 9. Third connecting pipe; 10. First adsorption box; 11. Fourth connecting pipe; 12. Second adsorption box; 13. High-tech purification material adsorption filter element packing layer; 14. Fifth connecting pipe; 15. Rectifier box; 16. Diverter pipe; 17. Filter element; 18. Drain pipe. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-4 This application is described in further detail.

[0030] Please refer to Figure 1 and Figure 4 A boiler wastewater recovery heating system comprises a boiler 1, a first connecting pipe 2 arranged at one side of the boiler 1 and a water discharge expansion tank 3 fixedly installed at one side of the first connecting pipe 2, a deaerator is arranged inside the water discharge expansion tank 3, a steam turbine 4 is connected to one side of the water discharge expansion tank 3, and a second connecting pipe 5 is fixedly installed at the other side of the water discharge expansion tank 3, a cyclone separator 6 is fixedly connected to one side of the second connecting pipe 5, a baffle plate 7 is fixedly installed inside the water discharge expansion tank 3, and a plurality of centrifugal atomizing nozzles 8 are fixedly installed on one side of the baffle plate 7, and the water inside the boiler 1 is discharged through the first connecting pipe 2. The waste water is discharged into the interior of the water discharge expansion tank 3, and at the same time, the hot steam generated by the steam turbine 4 when it is working is also discharged into the interior of the water discharge expansion tank 3, so that the water discharge expansion tank 3 collects the gas and liquid together, and the centrifugal atomization nozzle 8 inside the water discharge expansion tank 3 will centrifugally atomize the waste water and discharge it into the interior of the water discharge expansion tank 3, and this part of the steam is mixed with the steam of the steam turbine 4 and then discharged into the interior of the cyclone separator 6, and more than 70%-80% of the particulate matter in the gas is separated through the cyclone separator 6. A ground discharge pipe 18 is arranged at the other end of the water discharge expansion tank 3.

[0031] Reference Figure 2 , Figure 3 and Figure 4A third connecting pipe 9 is fixedly installed at the end of the cyclone separator 6, a first adsorption box 10 is fixedly installed on one side of the third connecting pipe 9, and a fourth connecting pipe 11 is fixedly installed on one side of the third connecting pipe 9, and the other end of the fourth connecting pipe 11 is fixedly connected to a second adsorption box 12, and the first adsorption box 10 and the second adsorption box 12 are both provided with a high-tech purification material adsorption filter element filler layer 13 inside, and the impurities such as phosphate, calcium and magnesium ion deposits, and silica are further adsorbed and processed by the adsorption materials inside the first adsorption box 10 and the second adsorption box 12, and the crystal removal rate in the steam after adsorption can reach up to about 90%, and a fifth connecting pipe 14 is provided on one side of the first adsorption box 10, and the first adsorption box 10 and the second adsorption box 12 are connected. A connecting structure is formed through the fifth connecting pipe 14, wherein the first adsorption box 10 is the main operating device, and the second adsorption box 12 is the standby operating device. The first adsorption box 10 and the second adsorption box 12 are fixedly connected to a rectifying box 15 on the side away from the cyclone separator 6. A plurality of groups of shunt pipes 16 are fixedly installed at the front end of the rectifying box 15, and a filter core 17 is fixedly installed inside the shunt pipe 16. The rectifying box 15 can collect the adsorbed steam, and discharge it to the heating user after secondary filtration through the shunt pipe 16 and the filter core 17 inside the shunt pipe 16. The filter core 17 is a filter core made of amino composite nanomaterials. The amino composite nanomaterials have a highly precise filtering effect, so that the steam purification rate after the steam leaves the shunt pipe 16 reaches more than 97%.

[0032] The implementation principle of the utility model is as follows: first, during the operation of the overall system, the wastewater generated by the boiler 1 and the steam generated by the turbine 4 will simultaneously enter the interior of the drainage expansion tank 3, and inside the drainage expansion tank 3, the wastewater will be shielded by the baffle plate 7 and collected together, and the subsequent centrifugal atomization nozzle 8 will centrifugally atomize the wastewater to turn it into steam and mix it with the steam of the turbine 4. After the mixing is completed, part of the overall steam will enter the deaerator for collection, and a small amount of wastewater will be discharged into the ditch through the ground discharge pipe 18, and then the remaining steam will enter the interior of the cyclone separator 6 through the second connecting pipe 5. More than 70%-80% of the particulate matter is separated out by the cyclone separator 6 and enters the first adsorption box 10 through the third connecting pipe 9. The impurities in the steam are adsorbed and separated by the high-tech purification material adsorption filter element filler layer 13 inside the first adsorption box 10, so that the crystal removal rate in the steam can reach up to about 90%. Then this part of the steam goes to the inside of the rectifier box 15 and is separated to the heating user through the diverter pipe 16 at the front end of the rectifier box 15. Before separation, the filter element 17 inside the diverter pipe 16 filters the steam again, so that the steam purification rate after the steam leaves the diverter pipe 16 reaches more than 97%.

[0033] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A boiler wastewater recovery heating system, comprising a boiler (1), a first connecting pipe (2) arranged on one side of the boiler (1), and a wastewater expansion container (3) fixedly mounted on one side of the first connecting pipe (2), characterized in that: One side of the water discharge expansion tank (3) is connected to a steam turbine (4), and the other side of the water discharge expansion tank (3) is fixedly mounted with a second connecting pipe (5), and one side of the second connecting pipe (5) is fixedly connected to a cyclone separator (6).

2. A boiler wastewater recovery heating system according to claim 1, characterized in that: A baffle plate (7) is fixedly installed inside the continuous drainage expansion container (3), and a plurality of groups of centrifugal atomizing nozzles (8) are fixedly installed on one side of the baffle plate (7).

3. A boiler wastewater recovery heating system according to claim 1, characterized in that: A third connecting pipe (9) is fixedly mounted at the end of the cyclone separator (6), a first adsorption box (10) is fixedly mounted on one side of the third connecting pipe (9), a fourth connecting pipe (11) is fixedly mounted on one side of the third connecting pipe (9), and the other end of the fourth connecting pipe (11) is fixedly connected to a second adsorption box (12).

4. A boiler wastewater recovery heating system according to claim 3, characterized in that: The first adsorption box (10) and the second adsorption box (12) are both provided with a high-tech purification material adsorption filter element filler layer (13), and a fifth connecting pipe (14) is provided on one side of the first adsorption box (10), and the first adsorption box (10) and the second adsorption box (12) form a communication structure through the fifth connecting pipe (14).

5. The boiler wastewater recovery heating system according to claim 3 is characterized by: A rectifying box (15) is fixedly connected to the first adsorption box (10) and the second adsorption box (12) on a side away from the cyclone separator (6); a plurality of groups of flow diversion pipes (16) are fixedly mounted on the front end of the rectifying box (15); and a filter core (17) is fixedly mounted inside the flow diversion pipe (16).

6. A boiler wastewater recovery heating system according to claim 5, characterized in that: The filter element (17) is a filter element made of amino composite nanomaterial.

7. The boiler wastewater recovery heating system according to claim 1, characterized in that: The other end of the water discharge expansion container (3) is provided with a ground discharge pipe (18).

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