Paper processing steam waste heat recovery device

Abstract

The utility model relates to the technical field of gas by-product recovery processing, in particular to a paper processing steam waste heat recovery device which comprises a recovery tank, a hot water storage tank fixedly arranged at the top in the recovery tank, a condensate tank fixedly arranged at the bottom in the recovery tank, and a sediment filtering tank arranged below the outside of the recovery tank. A heat exchange pipe is fixedly installed in the hot water storage tank, and a flushing liquid input pipe is arranged on the top of the left side outside the recovery tank. The paper processing steam waste heat recovery device is provided with treatment design for paper processing steam condensate, flushing fluid or flocculation solution can be introduced to flush the heat exchange pipe, and solid particles contained in smoke of steam can be flocculated and adsorbed more quickly by matching with a stirring assembly in the condensate tank, so that the waste heat recovery efficiency is improved, and the waste heat recovery efficiency is improved. And finally, the steam condensate is filtered, intercepted and adsorbed by the precipitation filtering tank, so that the steam condensate is primarily physically purified, and the steam condensate has a certain recycling value.

Description

Technical Field

[0001] The utility model relates to the technical field of gas by-product recovery and treatment, in particular to a paper processing steam residual heat recovery device. Background Art

[0002] During the paper processing and production process, a large amount of steam by-product is usually generated. The steam production is mainly concentrated in the pulp cooking and heating process. Steam is often at a high temperature and to some extent it is also a kind of energy loss of the pulp heating equipment. Therefore, the heat of steam is a recyclable energy. In the paper production process, there is usually equipment to recover the waste heat of steam.

[0003] The composition of steam varies depending on the paper type and process, including flue gas with a large number of solid particles mixed in the steam. Most of the existing steam waste heat recovery equipment only has waste heat exchange function, and lacks the preliminary purification design for the liquid after the steam condenses with flue gas particles. As a result, the steam condensate contains many impurities, has low recyclability, and still has a certain amount of waste.

[0004] In order to solve the above problems, we have made improvements and proposed a paper processing steam waste heat recovery device. Utility Model Content

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] The utility model provides a paper processing steam waste heat recovery device, comprising a recovery tank, a hot water storage tank is fixedly arranged on the top of the recovery tank, a condensate tank is fixedly arranged on the bottom of the recovery tank, a sedimentation filter tank is arranged below the outside of the recovery tank, the bottom of the condensate tank is fixedly connected to the sedimentation filter tank through a pipeline, a heat exchange pipe is fixedly installed inside the hot water storage tank, and a flushing liquid input pipe is arranged on the top of the left side of the outside of the recovery tank.

[0007] As an optimal technical solution of the present invention, a bracket is fixedly installed on the outside of the hot water storage tank by bolts, the other end of the bracket is fixedly welded to the inner wall of the recovery tank, and support rods are fixedly welded at equal intervals on the bottom surface of the condensate tank, and the bottom of each support rod is fixedly connected to the recovery tank by bolts.

[0008] As an optimal technical solution of the present invention, a base is provided at the bottom of the recovery tank, the middle part of the top surface of the base is fixedly connected to the recovery tank by bolts, and the bottom surface outside the sedimentation filtration tank is fixedly connected to the base by bolts.

[0009] As a preferred technical solution of the present invention, a return water pipe is fixedly installed at the center of the top surface of the recovery tank by screws, the bottom of the return water pipe passes through the recovery tank and is fixedly connected to the top of the hot water storage tank, the bottom of the hot water storage tank is fixedly connected and installed with a water supply pipe by bolts, the head end of the top left end of the water supply pipe is fixedly connected and installed with a first solenoid valve by bolts, the right end of the top surface of the base is fixedly installed with a first liquid pump by bolts, and the first liquid pump is fixedly connected to the water supply pipe by bolts.

[0010] As an optimal technical solution of the present invention, a steam input pipe is fixedly installed on the top of the left side of the outside of the recovery tank, the right end of the flushing liquid input pipe is fixedly connected to the steam input pipe, and the right end of the flushing liquid input pipe is fixedly connected to a second solenoid valve installed by a bolt, and the right end of the steam input pipe passes through the recovery tank and the hot water storage tank, and is fixedly connected to the heat exchange pipe.

[0011] As a preferred technical solution of the present invention, the heat exchange tube is in a spiral shape extending downward, the bottom of the heat exchange tube passes through the hot water storage tank, and is fixedly connected to the condensate tank by bolts, a motor is fixedly installed on the center of the top surface of the outside of the condensate tank by screws, and a stirring rod is provided inside the condensate tank. The top of the stirring rod is coaxially fixedly connected to the rotating shaft of the motor, and stirring blades are fixedly welded at equal intervals on the surface of the stirring rod.

[0012] As an optimal technical solution of the present invention, a third solenoid valve is fixedly installed in the middle of the pipe connecting the bottom of the condensate tank and the sedimentation filter tank, a filter screen is fixedly installed on the top of the interior of the sedimentation filter tank, an activated carbon plate is fixedly installed in the middle of the interior of the sedimentation filter tank, and a second liquid pump is fixedly installed on the left end of the top surface of the base by bolts, and the second liquid pump is fixedly connected to the left side of the sedimentation filter tank.

[0013] The beneficial effects of the utility model are as follows: the paper processing steam waste heat recovery device utilizes water as a heat exchange medium and cooperates with a spirally descending heat exchange tube to achieve a large area of ​​steam waste heat absorption, and the condensed steam liquid can also flow downward naturally. The equipment is equipped with a treatment design for paper processing steam condensate, and can pass a flushing liquid or a flocculation solution to flush the heat exchange tube. The stirring component in the condensate tank can more quickly flocculate and adsorb solid particles contained in the steam flue gas, and finally the sedimentation filter tank is used to filter, intercept and adsorb them, thereby achieving preliminary physical purification of the steam condensate, so that it can have a certain recycling value. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 This is a schematic structural diagram of a paper processing steam waste heat recovery device of the utility model;

[0016] Figure 2 This is a schematic cross-sectional view of a paper processing steam waste heat recovery device of the present invention;

[0017] Figure 3 This is a schematic diagram of the cross-sectional structure of a hot water storage tank of a paper processing steam waste heat recovery device of the utility model;

[0018] Figure 4 This is a schematic diagram of the cross-sectional structure of a condensate tank of a paper processing steam waste heat recovery device of the utility model;

[0019] Figure 5 This is a schematic diagram of the cross-sectional structure of a sedimentation filter tank of a paper processing steam waste heat recovery device of the utility model;

[0020] In the figure: 1. Base; 2. Recovery tank; 3. Hot water storage tank; 4. Condensate tank; 5. Sedimentation filter tank; 6. Return pipe; 7. Water supply pipe; 8. First liquid pump; 9. Steam input pipe; 10. Flushing liquid input pipe; 11. Heat exchange tube; 12. Motor; 13. Stirring rod; 14. Filter; 15. Activated carbon plate; 16. Second liquid pump. DETAILED DESCRIPTION

[0021] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0022] Example: Figure 1-5 As shown, a paper processing steam waste heat recovery device includes a recovery tank 2, a hot water storage tank 3 is fixedly installed on the top of the recovery tank 2, a condensate tank 4 is fixedly installed on the bottom of the recovery tank 2, a sedimentation filter tank 5 is provided below the outside of the recovery tank 2, the bottom of the condensate tank 4 is fixedly connected to the sedimentation filter tank 5 through a pipeline, a heat exchange pipe 11 is fixedly installed inside the hot water storage tank 3, and a flushing liquid input pipe 10 is provided on the top of the left side of the outside of the recovery tank 2.

[0023] A bracket is fixedly installed on the outside of the hot water storage tank 3 by bolts, and the other end of the bracket is fixedly welded to the inner wall of the recovery tank 2. Support rods are fixedly welded at equal intervals on the bottom surface of the condensate tank 4, and the bottom of each support rod is fixedly connected to the recovery tank 2 by bolts.

[0024] A base 1 is provided at the bottom of the recovery tank 2. The middle of the top surface of the base 1 is fixedly connected to the recovery tank 2 by bolts. The bottom surface of the outside of the sedimentation filter tank 5 is fixedly connected to the base 1 by bolts.

[0025] A return water pipe 6 is fixedly installed at the center of the top surface of the recovery tank 2 by screws. The bottom of the return water pipe 6 passes through the recovery tank 2 and is fixedly connected to the top of the hot water storage tank 3. A water supply pipe 7 is fixedly installed at the bottom of the hot water storage tank 3 by bolts. The head end of the top left end of the water supply pipe 7 is fixedly connected to the first solenoid valve by bolts. The right end of the top surface of the base 1 is fixedly installed with a first liquid pump 8 by bolts, and the first liquid pump 8 is fixedly connected to the water supply pipe 7 by bolts.

[0026] A steam input pipe 9 is fixedly installed on the top of the left side of the outside of the recovery tank 2. The right end of the flushing liquid input pipe 10 is fixedly connected to the steam input pipe 9. The right end of the flushing liquid input pipe 10 is fixedly connected to a second solenoid valve by bolts. The right end of the steam input pipe 9 passes through the recovery tank 2 and the hot water storage tank 3, and is fixedly connected to the heat exchange pipe 11.

[0027] The heat exchange tube 11 is in a spiral shape extending downward. The bottom of the heat exchange tube 11 passes through the hot water storage tank 3 and is fixedly connected to the condensate tank 4 by bolts. A motor 12 is fixedly installed on the center of the top surface of the outside of the condensate tank 4 by screws. A stirring rod 13 is provided inside the condensate tank 4. The top of the stirring rod 13 is coaxially fixedly connected to the rotating shaft of the motor 12, and stirring blades are fixedly welded at equal intervals on the surface of the stirring rod 13.

[0028] A third solenoid valve is fixedly installed in the middle of the pipe connecting the bottom of the condensate tank 4 and the sedimentation filter tank 5, a filter screen 14 is fixedly installed on the top of the inside of the sedimentation filter tank 5, an activated carbon plate 15 is fixedly installed in the middle of the inside of the sedimentation filter tank 5, and a second liquid pump 16 is fixedly installed on the left end of the top surface of the base 1 by bolts, and the second liquid pump 16 is fixedly connected to the left side of the sedimentation filter tank 5.

[0029] Working principle: When in use, the paper processing steam waste heat recovery device uses a steam input pipe 9 to pass steam into the heat exchange pipe 11 in the hot water storage tank 3, and the waste heat of the steam is transferred to the water in the hot water storage tank 3. The first liquid pump 8 controls the water in the hot water storage tank 3 after absorbing the waste heat to be input into the equipment or position requiring heat transfer, and returns or passes into new water or water cooled after heat transfer through the return pipe 6. After heat transfer and condensation, the steam accumulates in the condensate tank 4. The flushing liquid or the treated flocculant liquid of the steam condensate is introduced through the flushing liquid input pipe 10 to flush the heat exchange pipe 11 to a certain extent. The motor 12 controls the stirring rod 13 to stir the condensate, accelerate the flocculation and mixing of the flushing liquid or the flocculant liquid with the steam condensate, and ensure the preliminary purification of the condensate. Then it is passed into the sedimentation filter tank 5, and filtered and adsorbed by the filter mesh 14 and the activated carbon plate 15, so as to remove the particulate impurities of the flue gas in the steam condensate to a large extent. The discharge of the filtered condensate is controlled by the second liquid pump 16.

[0030] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A paper processing steam waste heat recovery device, comprising a recovery tank (2), characterized in that: A hot water storage tank (3) is fixedly provided at the top of the recovery tank (2), a condensate tank (4) is fixedly provided at the bottom of the recovery tank (2), a sedimentation filter tank (5) is provided below the outside of the recovery tank (2), the bottom of the condensate tank (4) is fixedly connected to the sedimentation filter tank (5) through a pipeline, a heat exchange pipe (11) is fixedly installed inside the hot water storage tank (3), and a flushing liquid input pipe (10) is provided at the top of the left side of the outside of the recovery tank (2).

2. The paper processing steam waste heat recovery device according to claim 1, characterized in that: A bracket is fixedly mounted on the outside of the hot water storage tank (3) by means of bolts, the other end of the bracket is fixedly welded to the inner wall of the recovery tank (2), and support rods are fixedly welded at equal intervals on the bottom surface of the condensate tank (4), and the bottom of each support rod is fixedly connected to the recovery tank (2) by means of bolts.

3. The paper processing steam waste heat recovery device according to claim 2, characterized in that: The bottom of the recovery tank (2) is provided with a base (1), the middle portion of the top surface of the base (1) is fixedly connected to the recovery tank (2) by means of bolts, and the outer bottom surface of the sedimentation filter tank (5) is fixedly connected to the base (1) by means of bolts.

4. The paper processing steam waste heat recovery device according to claim 3, characterized in that: A return water pipe (6) is fixedly installed at the center of the top surface of the recovery tank (2) by screws, the bottom of the return water pipe (6) passes through the recovery tank (2) and is fixedly connected to the top of the hot water storage tank (3), a water delivery pipe (7) is fixedly installed at the bottom of the hot water storage tank (3) by bolts, a first solenoid valve is fixedly installed at the head end of the top left end of the water delivery pipe (7) by bolts, a first liquid pump (8) is fixedly installed at the right end of the top surface of the base (1) by bolts, and the first liquid pump (8) is fixedly connected to the water delivery pipe (7) by bolts.

5. The paper processing steam waste heat recovery device according to claim 4, characterized in that: A steam input pipe (9) is fixedly installed on the top of the left side of the recovery tank (2), the right end of the flushing liquid input pipe (10) is fixedly connected to the steam input pipe (9), and the right end of the flushing liquid input pipe (10) is fixedly connected to a second solenoid valve via a bolt, and the right end of the steam input pipe (9) passes through the recovery tank (2) and the hot water storage tank (3), and is fixedly connected to the heat exchange pipe (11).

6. The paper processing steam residual heat recovery device according to claim 5, characterized in that: The heat exchange tube (11) is in a spiral shape extending downward. The bottom of the heat exchange tube (11) passes through the hot water storage tank (3) and is fixedly connected to the condensate tank (4) by bolts. A motor (12) is fixedly installed at the center of the top surface of the outside of the condensate tank (4) by screws. A stirring rod (13) is provided inside the condensate tank (4). The top of the stirring rod (13) is coaxially fixedly connected to the rotating shaft of the motor (12). Stirring blades are fixedly welded at equal intervals on the surface of the stirring rod (13).

7. The paper processing steam waste heat recovery device according to claim 6, characterized in that: A third solenoid valve is fixedly installed in the middle of the pipe connecting the bottom of the condensate tank (4) and the sedimentation filter tank (5), a filter screen (14) is fixedly installed on the top of the interior of the sedimentation filter tank (5), an activated carbon plate (15) is fixedly installed in the middle of the interior of the sedimentation filter tank (5), and a second liquid pump (16) is fixedly installed on the left end of the top surface of the base (1) by bolts, and the second liquid pump (16) is fixedly connected to the left side of the sedimentation filter tank (5).

Images