Steam condensate water recovery device of waste heat boiler

Abstract

The utility model relates to the technical field of waste heat recovery, in particular to a waste heat boiler steam condensate recovery device which comprises a tank body, a discharge pipeline arranged at the top of the tank body, a steam pipeline communicated with the tank body and a backflow pipeline communicated with the bottom of the tank body. The periphery of the condensation plate is in contact with the inner wall of the tank body, and air holes are formed in the condensation partition plate; the connection position of the steam pipeline and the tank body is lower than the condensation partition plate. According to the utility model, the problem that secondary steam discharged by the blowdown expander can be directly discharged into the atmosphere to form loss is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a waste heat recovery technical field, concretely relates to a waste heat boiler steam condensate water recovery device. BACKGROUND

[0002] The waste heat boiler is a kind of equipment using the waste heat generated in industrial production to generate steam, can effectively recover and utilize waste heat, improves energy utilization efficiency.Waste heat boiler is contacted by flow tube bundle and high-temperature flue gas, and the circulating water inside tube bundle is heated, and then steam is generated, circulating water is easy to accumulate various impurities and microorganisms in the system circulation process, leads to pipe scale and corrosion, therefore must keep water quality stable, on the one hand, chemical reagent is added to control the pH value, alkalinity and other indexes of water, on the other hand, circulating water needs to be continuously and periodically discharged.

[0003] When continuously and periodically discharging circulating water, blowdown expander is often used, waste heat water is automatically discharged through float ball liquid level valve or overflow regulating valve in blowdown expander, and secondary steam is directly discharged into atmosphere, forms loss. SUMMARY

[0004] The utility model discloses to solve the problem that secondary steam discharged by blowdown expander is directly discharged into atmosphere, forms loss, provides a waste heat boiler steam condensate water recovery device, can recover condensate in steam, to reduce water resource loss.

[0005] In order to solve the above problem, the technical scheme of the utility model is:

[0006] A waste heat boiler steam condensate water recovery device, including tank body, the discharge pipeline being located at the top of tank body, the steam pipeline being communicated with tank body and the backflow pipeline being communicated with the bottom of tank body, at least two condensation partitions are arranged in tank body along the height direction of tank body, the outer periphery of condensation board is in contact with the inner wall of tank body, gas hole is formed in the condensation partition, the above-mentioned structure can realize the recovery of steam condensate water in waste heat boiler;The connecting position of steam pipeline and tank body is lower than condensation partition, can guarantee that steam is fully condensed in tank body, improves the recovery efficiency of condensate in steam.

[0007] On the basis of the above scheme, the utility model can also be improved as follows:

[0008] Further, the gas holes on the two adjacent condensation partitions are staggered.

[0009] The steam passes through the gas holes on the lower condensation partition plate and flows to the upper part, and then collides with the part of the upper condensation partition plate where no gas hole is arranged, thereby increasing the resistance of the steam in the process of flowing to the discharge pipeline, and the condensation of the steam in the tank is more sufficient, thereby improving the recovery efficiency of the condensed water in the steam.

[0010] Further, the diameter of the gas holes on the condensation partition plate gradually decreases from bottom to top, further increasing the resistance of the steam in the process of flowing to the discharge pipeline, and further improving the recovery efficiency of the condensed water in the steam.

[0011] Further, the condensation partition plate is arranged in the tank in an inclined manner, and a flow guide groove is arranged on the inner wall of the tank.

[0012] Further, the cross section of the condensation partition plate is in a corrugated shape, the condensation partition plate (5) comprises inclined portions and a lower concave portion or a convex portion between two adjacent inclined portions, the gas holes are arranged on the inclined portions of the condensation partition plate, and the lower concave portion on the lower side of the condensation partition plate corresponds to the flow guide groove.

[0013] The above further technical solution makes the condensed water flow along the lower concave portion of the condensation partition plate to the flow guide groove on the tank, and then flow to the bottom of the tank through the flow guide groove, thereby reducing the contact opportunity of the condensed water droplets with the steam in the tank, and preventing the condensed water droplets from evaporating again.

[0014] At the same time, the condensed water flows along the flow guide groove on the tank, so that the condensed water can always be in contact with the side wall of the tank, thereby enabling the condensed water to be fully heat-exchanged with the outside through the tank, further reducing the heat contained in the condensed water, and further preventing the condensed water droplets from evaporating again.

[0015] Further, the gas holes are circular holes, and the axis of the gas holes is perpendicular to the inclined portion; the included angle of two adjacent inclined portions of the condensation partition plate or the included angle of the extension lines is 90°, and the thickness of the condensation partition plate is greater than the diameter of the gas holes.

[0016] The above further technical solution can prevent the steam from passing through the gas holes in a straight-up and straight-down manner, so that the steam always collides with the side wall of the gas hole when passing through the gas hole, and then passes through the gas hole again, which changes the flow direction of the steam, thereby increasing the contact time of the steam with the condensation partition plate, increasing the residence time of the steam in the tank, and enabling the steam to have more opportunities to exchange heat with the outside environment through the tank.

[0017] And the steam flowing out of the gas holes on the inclined portions on both sides of the same lower concave portion collides, thereby increasing the residence time of the steam in the tank.

[0018] Further, the guide groove is in a curve and surrounds the inner wall of the tank body, prolongs the flow path of the condensed water on the tank body, and can further improve the heat exchange efficiency of the condensed water via the tank body and the outside.

[0019] Through the technical scheme, the utility model discloses the beneficial effects are:

[0020] 1. In the utility model, through setting up the condensing baffle in the tank body, and the connecting position of steam pipeline and tank body is lower than the condensing baffle, can guarantee that steam is in contact with the condensing baffle when flowing in the tank body, so that condensation occurs, and the setting mode of the air hole on the condensing baffle at different heights in the tank body can disrupt the flow path of steam in the tank body, thereby increasing the resistance of steam flow to the discharge pipeline, and improving the recovery efficiency of condensed water in steam.

[0021] 2. In the utility model, the inner wall of the tank body is provided with a guide groove, and the cross section of the condensing baffle is in a corrugated shape and is inclinedly arranged on the tank body, so that the condensed water droplets flow to the bottom of the tank body via the guide groove, the contact area of the condensed water droplets and steam in the tank body can be reduced, and the condensed water droplets are prevented from evaporating again, and when the condensed water flows along the guide groove on the tank body, the condensed water can be fully exchanged with the outside through the tank body, thereby reducing the heat contained in the condensed water, and the condensed water droplets can be further prevented from evaporating again.

[0022] 3. In the utility model, the special setting mode of the air hole on the condensing baffle with a corrugated cross section can not only change the flow direction of steam, but also make the steam flowing out of the air holes on the inclined parts on both sides of the same concave part collide, so as to disrupt the flow path of steam in the tank body, thereby increasing the residence time of steam in the tank body. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a structural schematic view of the utility model embodiment one;

[0024] Figure 2 It is a structural schematic view of the condensing baffle in the utility model embodiment one Figure 1 ;

[0025] Figure 3 It is a structural schematic view of the condensing baffle in the utility model embodiment one Figure 2 ;

[0026] Figure 4 It is a perspective view of the tank body in the utility model embodiment two;

[0027] Figure 5 It is a structural schematic view of the condensing baffle in the utility model embodiment two;

[0028] Figure 6 It isFigure 5 Cross-sectional view of the central condenser baffle;

[0029] Figure 7 yes Figure 6 A magnified view of a portion of point A in the middle.

[0030] The attached diagram is labeled as follows: 1 is the tank body, 11 is the guide channel, 2 is the discharge pipe, 3 is the steam pipe, 4 is the return pipe, 5 is the condensation baffle, and 6 is the vent. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0032] Example 1: As Figures 1-3 As shown, a waste heat boiler steam condensate recovery device includes a tank 1, a discharge pipe 2 located at the top of the tank 1, a steam pipe 3 connected to the tank 1, and a return pipe 4 connected to the bottom of the tank 1. At least two condensation baffles 5 are provided inside the tank 1 along its height, with the outer periphery of each baffle contacting the inner wall of the tank 1. The condensation baffles 5 have vent holes 6. The connection point of the steam pipe 3 to the tank 1 is lower than that of the condensation baffles 5, thereby ensuring sufficient condensation of steam within the tank 1 and improving the condensate recovery efficiency.

[0033] In this embodiment, three condensation baffles 5 are provided.

[0034] As one possible implementation, the vents 6 on two adjacent condensing baffles 5 are arranged in an alternating manner, so that when steam flows through the vents 6 on the lower condensing baffle 5 to the upper part, it will hit the area on the upper condensing baffle 5 where no vents 6 are provided, increasing the resistance of steam flow to the discharge pipe 2, and making the steam condense more fully in the tank 1.

[0035] As one possible implementation, the pore size of the pores 6 on the condensation baffle 5 gradually decreases from bottom to top, thereby increasing the resistance to the flow of steam to the discharge pipe 2.

[0036] In this embodiment, during use, the steam pipe 3 is connected to the steam discharge pipe of the sewage expander. Steam enters the tank 1 through the steam pipe 3. As the steam flows out of the tank 1 through the discharge pipe 2, it will come into contact with the condensation baffles 5 set at different heights inside the tank 1 in sequence, thereby condensing. The condensed water droplets drip through the air holes 6 on the condensation baffles 5 to the bottom of the tank 1, and then flow out through the return pipe 4, so as to be reused.

[0037] Example 2:

[0038] like Figures 4-7As shown, the technical solution in the embodiment is the same as that in Embodiment 1, except that a flow guide groove 11 is formed on the inner wall of the tank body 1.

[0039] The cross section of the condensation partition plate 5 is corrugated, the condensation partition plate 5 comprises inclined portions and recessed portions or protruding portions between two adjacent inclined portions, the two adjacent inclined portions are symmetrically inclined, the intersection of the downward extension of the two adjacent inclined portions is a recessed portion, and the intersection of the upward extension of the two adjacent inclined portions is a protruding portion, the air holes 6 are arranged on the inclined portions of the condensation partition plate 5, and the condensation partition plate 5 is arranged in the tank body 1 in an inclined manner, and the lower recessed portion of the lower side of the condensation partition plate 5 corresponds to the flow guide groove 11.

[0040] In the embodiment, the condensed water flows along the recessed portion of the condensation partition plate 5 into the flow guide groove 11 on the tank body 1, and then flows to the bottom of the tank body 1 through the flow guide groove 11, thereby reducing the contact area between the condensed water droplets and the steam in the tank body 1 and preventing the condensed water droplets from evaporating again.

[0041] At the same time, the condensed water flows along the flow guide groove 11 on the tank body 1, so that the condensed water can always be in contact with the side wall of the tank body 1, thereby enabling the condensed water to be fully exchanged with the outside through the tank body 1, further reducing the heat contained in the condensed water, and further preventing the condensed water droplets from evaporating again.

[0042] As an implementable manner, the air hole 6 is a circular hole, and the axis of the air hole 6 is perpendicular to the inclined portion where the air hole 6 is located; the included angle between the two adjacent inclined portions of the condensation partition plate 5 or the included angle between the extension lines thereof is 90°, and the thickness of the condensation partition plate 5 is greater than the diameter of the air hole 6.

[0043] In the embodiment, the steam can be prevented from passing through the air hole 6 in a straight-up and straight-down manner, so that the steam always collides with the side wall of the air hole 6 when passing through the air hole 6, and then passes through the air hole 6 again, which changes the flow direction of the steam, thereby increasing the contact time of the steam with the condensation partition plate and prolonging the residence time of the steam in the tank body 1, so that the steam has more opportunities to exchange heat with the outside environment through the tank body 1.

[0044] In addition, the steam flowing out of the air holes 6 on the inclined portions on both sides of the same recessed portion collides, thereby increasing the residence time of the steam in the tank body 1.

[0045] As an implementable manner, the flow guide groove 11 is arranged in a curved manner around the inner wall of the tank body 1, which prolongs the flow path of the condensed water on the tank body 1 and further improves the heat exchange efficiency of the condensed water with the outside through the tank body 1.

[0046] In the embodiment, the steam pipeline 3 is connected with the steam discharge pipeline of the blowdown expander, and steam enters the inside of the tank body 1 via the steam pipeline 3. In the process of the steam flowing out of the tank body 1 via the discharge pipeline 2, the steam will sequentially contact the condensation partitions 5 arranged at different heights in the tank body 1, so that condensation occurs. The condensed water drops flow into the flow guide grooves 11 arranged on the inner wall of the tank body 1 via the lower concave portions of the condensation partitions 5, flow to the bottom of the tank body 1 via the flow guide grooves 11, and then flow out via the return pipeline 4, so as to be reused.

[0047] The preferred embodiments of the present application are described in detail above with reference to the drawings, but the present application is not limited to the above-described embodiments, and any equivalent or equivalent transformation or replacement of the technical solutions of the present application within the scope of the present application without departing from the spirit of the present application belongs to the protection scope of the present application.

Claims

1. A waste heat boiler steam condensate recovery device, characterized by, The device comprises a tank body (1), a discharge pipeline (2) arranged on the top of the tank body (1), a steam pipeline (3) communicated with the tank body (1) and a backflow pipeline (4) communicated with the bottom of the tank body (1), at least two condensing partitions (5) are arranged in the tank body (1) along the height direction of the tank body, the outer periphery of the condensing partition (5) is in contact with the inner wall of the tank body (1), and air holes (6) are arranged on the condensing partition (5); the connection position of the steam pipeline (3) and the tank body (1) is lower than the condensing partition (5).

2. A device for recovering steam condensate from a waste heat boiler according to claim 1, characterized in that The air holes (6) on the two adjacent condensing partitions (5) are staggered.

3. A device for recovering steam condensate from a waste heat boiler according to claim 1 or 2, characterised in that From bottom to top, the hole diameter of the air holes (6) on the condensing partition (5) gradually decreases.

4. A device for recovering steam condensate from a waste heat boiler according to claim 1, characterized in that, The condensing partition (5) is arranged in the tank body (1) in an inclined manner, and a flow guide groove (11) is arranged on the inner wall of the tank body (1).

5. The waste heat boiler steam condensate water recovery device according to claim 4, characterized in that, The cross section of the condensing partition (5) is in a corrugated shape, the condensing partition (5) comprises an inclined part and a lower concave part or a convex part between two adjacent inclined parts, the air hole (6) is arranged on the inclined part of the condensing partition (5), and the lower concave part on the lower side of the condensing partition (5) corresponds to the flow guide groove (11).

6. A waste heat boiler steam condensate recovery device according to claim 5, wherein The air hole (6) is a circular hole, the axis of the air hole (6) is perpendicular to the inclined part, the included angle of two adjacent inclined parts of the condensing partition (5) or the included angle of the extension lines is 90°, and the thickness of the condensing partition (5) is greater than the diameter of the air hole (6).

7. A waste heat boiler steam condensate recovery device according to claim 5 or 6, characterised in that, From bottom to top, the hole diameter of the air holes (6) on the condensing partition (5) gradually decreases.

8. A waste heat boiler steam condensate recovery device according to claim 4 or 5, characterised in that, The flow guide groove (11) is arranged on the inner wall of the tank body (1) in a curved manner.

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