Reaction kettle for high-concentration sewage treatment and waste heat recovery

Abstract

The utility model discloses a reaction kettle for high-concentration sewage treatment and waste heat recovery, which belongs to the technical field of sewage treatment and heat exchange equipment and comprises a kettle body and a heat exchange system. The heat exchange system comprises a first water inlet pipe, a first water outlet pipe and a first inner coil pipe arranged in the kettle body; the first water inlet pipe and the first water outlet pipe are respectively communicated with the water inlet end and the water outlet end of the first inner coil pipe; according to the utility model, the corresponding heat exchange system is arranged in the kettle body, so that heat generated after alkali neutralization in the kettle body can be transferred to raw water in the first inner coil pipe, and the heat of the raw water can be transferred to other working procedures needing to be heated; therefore, the resource utilization rate can be improved while the treatment equipment is simplified to reduce the investment and operation cost of the equipment, and the effects of energy conservation and emission reduction are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage treatment and heat exchange equipment, and particularly relates to a reactor used for high-concentration sewage treatment and waste heat recovery. Background Art

[0002] Traditional high-concentration wastewater treatment processes typically involve two steps: alkali neutralization and wastewater heat exchange. However, these steps typically require separate equipment, increasing equipment footprint and reducing energy efficiency, significantly increasing wastewater treatment costs. Utility Model Content

[0003] The technical problem to be solved by the utility model is: how to provide a reactor capable of realizing heat recovery in the sewage treatment process.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] A reactor for high-concentration sewage treatment and waste heat recovery, comprising a reactor body and a heat exchange system;

[0006] The heat exchange system includes a first water inlet pipe, a first water outlet pipe and a first inner coil arranged inside the kettle body;

[0007] The first water inlet pipe and the first water outlet pipe are respectively connected to the water inlet end and the water outlet end of the first inner coil.

[0008] Furthermore, the heat exchange system further comprises a first water inlet valve, a first water outlet valve and a first temperature sensor;

[0009] The first water inlet valve is connected to the first inner coil through the first water inlet pipe;

[0010] The first water outlet valve is connected to the first inner coil through the first water outlet pipe;

[0011] The first temperature sensor is arranged on the first water outlet pipe, and the sensing end of the first temperature sensor is arranged in the first water outlet pipe.

[0012] Furthermore, it also includes a cleaning system;

[0013] The cleaning system includes a second water inlet pipe, a second water outlet pipe, a second water inlet valve and a second water outlet valve;

[0014] The second water inlet valve is connected to the first water outlet pipe through the second water inlet pipe;

[0015] The second water outlet valve is connected to the first water inlet pipe through the second water outlet pipe.

[0016] Furthermore, it also includes a pH meter, a second temperature sensor and a controller;

[0017] The detection end of the pH meter and the detection end of the second temperature sensor are both arranged in the kettle;

[0018] The first water inlet valve, the first water outlet valve, the first temperature sensor, the second water inlet valve, the second water outlet valve, the pH meter and the second temperature sensor are all electrically connected to the controller.

[0019] Furthermore, it also includes a second inner coil;

[0020] The second inner coil is arranged inside the kettle body near the bottom;

[0021] The feed port of the second inner coil and the discharge port of the second inner coil are both arranged outside the kettle body.

[0022] Furthermore, a bracket is provided in the kettle body;

[0023] The first inner coil is connected to the inner wall of the kettle body through a bracket.

[0024] Furthermore, it also includes a stirring device;

[0025] The stirring device includes a driving motor and a stirring rod connected to the driving motor;

[0026] The stirring rod is arranged in the kettle body.

[0027] Furthermore, a support frame is provided on the inner bottom of the kettle body;

[0028] One end of the stirring rod away from the driving motor is transmission-connected to the supporting frame.

[0029] Furthermore, the stirring rod is provided with a main blade and an auxiliary blade at intervals;

[0030] The area of ​​the main blade is greater than the area of ​​the auxiliary blade.

[0031] Furthermore, the plane where the main blades are located is perpendicular to the horizontal plane;

[0032] From the inside to the outside of the kettle body along the radial direction, the size of the main blades in the vertical direction gradually increases.

[0033] The beneficial effect of the present invention is that the reactor provided by the present invention for high-concentration sewage treatment and waste heat recovery can transfer the heat generated after alkali neutralization inside the reactor body to the raw water in the first inner coil by arranging a corresponding heat exchange system inside the reactor body, so that the raw water can transfer this part of the heat to other processes that require heating, thereby simplifying the treatment equipment to reduce the investment and operating costs of the equipment, and also improving resource utilization, achieving the effect of energy conservation and emission reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic structural diagram of a reactor for high-concentration sewage treatment and waste heat recovery according to a specific embodiment of the present invention;

[0035] Figure 2 for Figure 1 A magnified view of point A;

[0036] Description of labels:

[0037] 1. Kettle body; 101. First inner coil; 102. Second inner coil; 103. Bracket; 104. Support frame;

[0038] 2. First water inlet pipe;

[0039] 3. First water outlet pipe;

[0040] 4. First water inlet valve;

[0041] 5. First water outlet valve;

[0042] 6. First temperature sensor;

[0043] 7. Second water inlet pipe;

[0044] 8. Second water outlet pipe;

[0045] 9. Second water inlet valve;

[0046] 10. Second water outlet valve;

[0047] 11. pH meter;

[0048] 12. Second temperature sensor;

[0049] 13. Stirring device; 131. Driving motor; 132. Stirring rod; 133. Main blade; 134. Auxiliary blade. DETAILED DESCRIPTION

[0050] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following description is given in conjunction with the embodiments and the accompanying drawings.

[0051] The most critical concept of this utility model is that by integrating the corresponding heat exchange system into the interior of the kettle body, it can not only reduce the footprint of the equipment, reduce the investment and operating costs of the equipment, but also reduce the cost of heating raw water, improve energy utilization efficiency, and reduce energy waste, thereby making the sewage treatment process safer, more environmentally friendly, reliable and efficient.

[0052] Please refer to Figures 1 to 2 The reactor provided by the present invention for high-concentration sewage treatment and waste heat recovery includes a reactor body 1 and a heat exchange system;

[0053] The heat exchange system includes a first water inlet pipe 2, a first water outlet pipe 3 and a first inner coil 101 arranged inside the kettle body 1;

[0054] The first water inlet pipe 2 and the first water outlet pipe 3 are respectively connected to the water inlet end and the water outlet end of the first inner coil 101.

[0055] Specifically, the kettle body 1 is also provided with corresponding feed ports and discharge ports to facilitate the discharge of sewage to be treated and sewage after the neutralization reaction; if necessary, a corresponding sewage outlet can be provided at the lowest point of the bottom of the kettle body 1 to facilitate the discharge of precipitates produced after the reaction, thereby avoiding the accumulation of precipitates inside the kettle body 1 and affecting the normal sewage treatment work; the number of turns of the first inner coil 101 is 3 to 6, and the diameter range is 30 to 50 mm.

[0056] From the above description, it can be seen that the beneficial effects of the present invention are: providing a reactor for high-concentration sewage treatment and waste heat recovery, utilizing the heat generated after alkali neutralization inside the kettle body 1 to exchange heat with the raw water in the first inner coil 101, so that the sewage is cooled to a certain temperature after heat exchange and discharged into the biochemical pool, avoiding excessive temperature damage to the microorganisms in the biochemical pool, and at the same time the raw water is heated to a certain temperature, which also saves the corresponding heating cost and improves resource utilization; the reactor for high-concentration sewage treatment and waste heat recovery of the present invention reduces the cost of heating raw water, improves energy utilization efficiency, reduces energy waste, reduces the footprint of equipment, and reduces equipment investment and operating costs, while also making the sewage treatment process safer, more environmentally friendly, efficient and reliable.

[0057] Furthermore, the heat exchange system further comprises a first water inlet valve 4, a first water outlet valve 5 and a first temperature sensor 6;

[0058] The first water inlet valve 4 is connected to the first inner coil 101 through the first water inlet pipe 2;

[0059] The first water outlet valve 5 is connected to the first inner coil 101 through the first water outlet pipe 3;

[0060] The first temperature sensor 6 is disposed on the first water outlet pipe 3 , and a sensing end of the first temperature sensor 6 is disposed inside the first water outlet pipe 3 .

[0061] As can be seen from the above description, the design further optimizes the composition structure of the heat exchange system. By setting the first water inlet valve 4 and the first water outlet valve 5, structural support is provided for the subsequent self-circulation of raw water. At the same time, a corresponding first temperature sensor 6 is set on the first water outlet pipe 3 to achieve the purpose of real-time monitoring of the cooling water temperature, thereby avoiding the influence of the heat transfer effect due to the excessively high cooling water temperature.

[0062] Furthermore, the above-mentioned reactor for high-concentration sewage treatment and waste heat recovery also includes a cleaning system;

[0063] The cleaning system includes a second water inlet pipe 7, a second water outlet pipe 8, a second water inlet valve 9 and a second water outlet valve 10;

[0064] The second water inlet valve 9 is connected to the first water outlet pipe 3 through the second water inlet pipe 7;

[0065] The second water outlet valve 10 is connected to the first water inlet pipe 2 through the second water outlet pipe 8 .

[0066] Specifically, the first water outlet valve 5, the first water inlet valve 4, the second water outlet valve 10 and the second water inlet valve 9 are any commercially available manual valves, automatic shut-off valves or manual-automatic shut-off valves; this effectively improves the flexibility of each valve, allowing staff to select different types of valves to control water flow according to actual needs.

[0067] As can be seen from the above description, as the number of uses increases, in order to prevent the first inner coil 101 from affecting normal heat exchange due to internal blockage, a corresponding cleaning system is added; by controlling the opening of the second water inlet valve 9 and the second water outlet valve 10, clean water can be continuously introduced into the first inner coil 101, thereby providing structural support for the regular cleaning of the first inner coil 101.

[0068] Furthermore, the above-mentioned reactor for high-concentration sewage treatment and waste heat recovery further includes a pH meter 11, a second temperature sensor 12 and a controller;

[0069] The detection end of the pH meter 11 and the detection end of the second temperature sensor 12 are both arranged in the kettle body 1;

[0070] The first water inlet valve 4, the first water outlet valve 5, the first temperature sensor 6, the second water inlet valve 9, the second water outlet valve 10, the pH meter 11 and the second temperature sensor are all electrically connected to the controller.

[0071] As can be seen from the above description, by setting up the pH meter 11 and the second temperature sensor 12, the effect of real-time detection of the pH value and temperature of the internal reaction solution can be achieved; at the same time, all the electrical components included in the reactor for high-concentration sewage treatment and waste heat recovery of the utility model are electrically connected to the controller, which can provide structural support for the automatic loading and unloading of materials, self-circulation of the coolant and automatic flushing of the first inner coil 101.

[0072] Furthermore, the above-mentioned reactor for high-concentration sewage treatment and waste heat recovery further includes a second inner coil 102;

[0073] The second inner coil 102 is arranged inside the kettle body 1 near the bottom;

[0074] The feed port of the second inner coil 102 and the discharge port of the second inner coil 102 are both arranged outside the kettle body 1 .

[0075] From the above description, it can be seen that in the sewage treatment workshop, corresponding equipment that can generate high-temperature steam is usually provided. In order to improve the utilization rate of this part of heat, the corresponding high-temperature steam can be introduced into the reactor for high-concentration sewage treatment and waste heat recovery of the utility model through the second inner coil 102, so that this part of high-temperature steam can be used as an additional heat source to increase the reaction speed of the mixed liquid in the kettle body 1, thereby achieving the purpose of improving the sewage treatment efficiency.

[0076] Furthermore, a bracket 103 is provided in the kettle body 1;

[0077] The first inner coil 101 is connected to the inner wall of the kettle body 1 through a bracket 103 .

[0078] From the above description, it can be seen that by arranging the bracket 103 in the kettle body 1, the first inner coil 101 can be suspended as a whole in the kettle body 1, thereby increasing its heat exchange area in the kettle body 1 and further improving the heat exchange efficiency.

[0079] Furthermore, the kettle body 1 is made of corrosion-resistant material.

[0080] Specifically, the material of the anti-corrosion material is stainless steel.

[0081] As can be seen from the above description, the kettle body 1 is made of anti-corrosion material, which can adapt to the chemical properties of sewage and alkali solution, so as to effectively improve the service life of the equipment.

[0082] Furthermore, the above-mentioned reactor for high-concentration sewage treatment and waste heat recovery further includes a stirring device 13;

[0083] The stirring device 13 includes a driving motor 131 and a stirring rod 132 connected to the driving motor 131;

[0084] The stirring rod 132 is disposed in the kettle body 1 .

[0085] Furthermore, a support frame 104 is provided at the inner bottom of the kettle body 1;

[0086] One end of the stirring rod 132 away from the driving motor 131 is transmission-connected to the support frame 104 .

[0087] From the above description, it can be seen that by setting up a stirring device 13, the sewage in the treatment process can be stirred, which can speed up the treatment of the sewage while preventing the corresponding sediment from accumulating at the bottom of the kettle body 1; and further setting a support frame 104 at the inner bottom of the kettle body 1 can support the stirring rod 132, thereby effectively improving the stability of the stirring process.

[0088] Furthermore, from bottom to top in the vertical direction, the stirring rod 132 is provided with a main blade 133 and an auxiliary blade 134 at intervals;

[0089] The area of ​​the main blade 133 is larger than the area of ​​the auxiliary blade 134 .

[0090] Specifically, the number of the auxiliary blades 134 is at least two groups, and each group of auxiliary blades 134 is also arranged at intervals on the stirring rod 132 .

[0091] As can be seen from the above description, the design specifically sets main blades 133 and auxiliary blades 134 of different areas for the stirring area; the main blades 133 set at the bottom mainly play a stirring role on the sewage, because they are close to the bottom of the kettle body 1 and can quickly stir and disperse the accumulated materials; and the auxiliary blades 134 set near the middle of the kettle body 1 can be used as auxiliary blades to play a role in assisting the stirring of the sewage.

[0092] Furthermore, the plane where the main blades 133 are located is perpendicular to the horizontal plane;

[0093] From the inside to the outside of the kettle body 1 along the radial direction, the size of the main blades 133 in the vertical direction gradually increases.

[0094] From the above description, it can be seen that this design has made further improvements to the structure of the main blade 133. The main blade 133 that conforms to this structure can not only meet the material mixing work, but also effectively reduce the overall width of the main blade 133, thereby achieving the purpose of reducing the manufacturing cost of the main blade 133.

[0095] The reactor of the utility model for high-concentration sewage treatment and waste heat recovery can assist sewage treatment work.

[0096] Please refer to Figures 1 to 2 , the first embodiment of the present utility model is:

[0097] A reactor for high-concentration sewage treatment and waste heat recovery, comprising a reactor body 1, a heat exchange system, a cleaning system, a pH meter 11, a second temperature sensor 12, a controller, a second inner coil 102 and a stirring device 13; the heat exchange system comprises a first water inlet pipe 2, a first water outlet pipe 3 and a first inner coil 101 arranged inside the reactor body 1; the first water inlet pipe 2 and the first water outlet pipe 3 are respectively connected to the water inlet end and the water outlet end of the first inner coil 101; the second inner coil 102 is arranged near the bottom of the reactor body 1; the feed port and the discharge port of the second inner coil 102 are both arranged outside the reactor body 1; a bracket 103 is also provided in the reactor body 1; the first inner coil 101 is connected to the inner wall of the reactor body 1 through the bracket 103; the reactor body 1 is made of corrosion-resistant material; the first inner coil 101 has 4 turns and a diameter range of 40 mm.

[0098] The heat exchange system also includes a first water inlet valve 4, a first water outlet valve 5 and a first temperature sensor 6; the first water inlet valve 4 is connected to the first inner coil 101 through the first water inlet pipe 2; the first water outlet valve 5 is connected to the first inner coil 101 through the first water outlet pipe 3; the first temperature sensor 6 is arranged on the first water outlet pipe 3, and the sensing end of the first temperature sensor 6 is arranged in the first water outlet pipe 3.

[0099] The cleaning system includes a second water inlet pipe 7, a second water outlet pipe 8, a second water inlet valve 9 and a second water outlet valve 10; the second water inlet valve 9 is connected to the first water outlet pipe 3 through the second water inlet pipe 7; the second water outlet valve 10 is connected to the first water inlet pipe 2 through the second water outlet pipe 8.

[0100] The detection end of the pH meter 11 and the detection end of the second temperature sensor 12 are both arranged in the kettle body 1; the first water inlet valve 4, the first water outlet valve 5, the first temperature sensor 6, the second water inlet valve 9, the second water outlet valve 10, the pH meter 11 and the second temperature sensor are all electrically connected to the controller.

[0101] The stirring device 13 includes a drive motor 131 and a stirring rod 132 that is transmission-connected to the drive motor 131; the stirring rod 132 is arranged in the kettle body 1; from bottom to top in the vertical direction, a main blade 133 and an auxiliary blade 134 are arranged at intervals on the stirring rod 132; the area of ​​the main blade 133 is larger than that of the auxiliary blade 134; the plane where the main blade 133 is located is perpendicular to the horizontal plane; from inside to outside in the radial direction of the kettle body 1, the size of the main blade 133 in the vertical direction gradually increases; a support frame 104 is provided at the inner bottom of the kettle body 1; the end of the stirring rod 132 away from the drive motor 131 is transmission-connected to the support frame 104.

[0102] The working principle of the present invention is as follows: sewage and alkali solution are introduced into the kettle body 1 through the feed port and alkali solution injection port, respectively, until the sewage mixture contacts the first inner coil 101. Then, the stirring device 13 is activated, and the stirring rod 132 is driven by the drive motor 131 to accelerate the neutralization reaction between the sewage and the alkali solution. When necessary, steam generated in the workshop is introduced into the second inner coil 102, so that high-temperature steam circulates through the second inner coil 102 to achieve the effect of heating the neutralization kettle. During the reaction process, the pH meter 11 and the first temperature sensor 6 can monitor the pH value and temperature of the sewage in real time. At the same time, the raw water in the first inner coil 101 is continuously circulated through the first water inlet valve 4 and the first water outlet valve 5, so that the higher-temperature sewage and the lower-temperature raw water can continuously exchange heat. When the sewage cools to a certain temperature, it is discharged from the sewage outlet (discharged into the biochemical pool). When the raw water rises to a certain temperature, it is discharged from the first outlet pipe 3 (entering the condensation kettle), thereby completing the sewage treatment process.

[0103] In summary, the utility model provides a reactor for high-concentration sewage treatment and waste heat recovery, which uses alkali-neutralized sewage and untreated raw water to achieve heat exchange through the first inner coil. After the sewage is heat exchanged, it is cooled to a suitable temperature and discharged into the biochemical pool to avoid harming the microorganisms in the biochemical pool. The raw water is heated to a certain temperature, which saves heating costs and improves resource utilization. At the same time, the first temperature sensor, the second temperature sensor, the first water inlet valve, the first water outlet valve and the pH meter are used to monitor and control the reaction process in real time. The steam waste heat resources generated by the workshop equipment are used as the heat source, which is heated through the second inner coil to achieve the effect of heat preservation and temperature control for the kettle body. The utility model reduces the cost of heating raw water, improves energy utilization efficiency, reduces energy waste, reduces the footprint of equipment, reduces equipment investment and operating costs, and can also make the sewage treatment process safer, more environmentally friendly, efficient and reliable.

[0104] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention specification and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A reactor for high-concentration sewage treatment and waste heat recovery, characterized in that: Including kettle body and heat exchange system; The heat exchange system includes a first water inlet pipe, a first water outlet pipe and a first inner coil arranged inside the kettle body; The first water inlet pipe and the first water outlet pipe are respectively connected to the water inlet end and the water outlet end of the first inner coil.

2. The reactor for high-concentration sewage treatment and waste heat recovery according to claim 1, characterized in that: The heat exchange system further includes a first water inlet valve, a first water outlet valve and a first temperature sensor; The first water inlet valve is connected to the first inner coil through the first water inlet pipe; The first water outlet valve is connected to the first inner coil through the first water outlet pipe; The first temperature sensor is arranged on the first water outlet pipe, and the sensing end of the first temperature sensor is arranged in the first water outlet pipe.

3. The reactor for high-concentration sewage treatment and waste heat recovery according to claim 2, characterized in that: Also includes a cleaning system; The cleaning system includes a second water inlet pipe, a second water outlet pipe, a second water inlet valve and a second water outlet valve; The second water inlet valve is connected to the first water outlet pipe through the second water inlet pipe; The second water outlet valve is connected to the first water inlet pipe through the second water outlet pipe.

4. The reactor for high-concentration sewage treatment and waste heat recovery according to claim 3, characterized in that: Also included is a pH meter, a second temperature sensor, and a controller; The detection end of the pH meter and the detection end of the second temperature sensor are both arranged in the kettle; The first water inlet valve, the first water outlet valve, the first temperature sensor, the second water inlet valve, the second water outlet valve, the pH meter and the second temperature sensor are all electrically connected to the controller.

5. The reactor for high-concentration sewage treatment and waste heat recovery according to claim 1, characterized in that: Also included is a second inner coil; The second inner coil is arranged inside the kettle body near the bottom; The feed port of the second inner coil and the discharge port of the second inner coil are both arranged outside the kettle body.

6. The reactor for high-concentration sewage treatment and waste heat recovery according to claim 1, characterized in that: A bracket is also provided in the kettle body; The first inner coil is connected to the inner wall of the kettle body through a bracket.

7. The reactor for high-concentration sewage treatment and waste heat recovery according to claim 1, characterized in that: Also includes a stirring device; The stirring device includes a driving motor and a stirring rod connected to the driving motor; The stirring rod is arranged in the kettle body.

8. The reactor for high-concentration sewage treatment and waste heat recovery according to claim 7, characterized in that: A support frame is provided at the inner bottom of the kettle body; One end of the stirring rod away from the driving motor is transmission-connected to the supporting frame.

9. The reactor for high-concentration sewage treatment and waste heat recovery according to claim 7, characterized in that: From bottom to top in the vertical direction, the stirring rod is provided with main blades and auxiliary blades at intervals; The area of ​​the main blade is greater than the area of ​​the auxiliary blade.

10. The reactor for high-concentration sewage treatment and waste heat recovery according to claim 9, characterized in that: The plane where the main blades are located is perpendicular to the horizontal plane; From the inside to the outside of the kettle body along the radial direction, the size of the main blades in the vertical direction gradually increases.

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