Chemical fertilizer production waste heat recovery system

Abstract

The utility model relates to the technical field of chemical production waste heat recovery devices, in particular to a chemical fertilizer production waste heat recovery system which comprises a heat preservation conveying pipe, end heat preservation pipes are fixedly installed at the two ends of the heat preservation conveying pipe respectively, a conduction pipe is fixedly installed in the middle of the heat preservation conveying pipe, and a bent pipe is fixedly installed at the end of the conduction pipe. A transparent heat preservation pipe is integrally formed at the bent portion of the bottom of the bent pipe, a spiral heat exchange pipe is arranged in the bent pipe, a heat exchange medium inlet pipe penetrating out of the bent pipe is fixedly installed at the water inlet end of the spiral heat exchange pipe, and a heat exchange medium output pipe penetrating out of the bent pipe is fixedly installed at the water outlet end of the spiral heat exchange pipe. A partition plate is fixedly installed on the pipe wall of the middle position of the heat preservation conveying pipe and extends into the communicating pipe, and arc-shaped transition plates are fixedly installed between the left side and the right side of the partition plate and the inner wall of the heat preservation conveying pipe. The heat exchanger facilitates efficient heat exchange operation, facilitates reduction of occupied space and is convenient to use.

Description

TECHNICAL FIELD

[0001] The utility model relates to chemical production waste heat recovery device technical field, specifically, relate to a kind of chemical fertilizer production waste heat recovery system. BACKGROUND

[0002] In the chemical fertilizer production process, many links can produce a large amount of waste heat. These waste heat if not utilized, not only waste valuable energy resources, but also can cause pollution to the environment;Specifically, the waste heat in the chemical fertilizer production process mainly comes from furnace, heating equipment, cooling equipment and high-temperature materials after reaction etc.;A large amount of heat energy is discharged into the environment with waste gas, waste liquid etc. not only leads to energy waste, but also increases the production cost of enterprise.

[0003] At present, in order to achieve the effect of recycling waste heat in chemical fertilizer production, waste water or waste gas is usually introduced into the corresponding pipeline, and then the corresponding heat exchange component is arranged in the pipeline to realize heat exchange operation and achieve the effect of recycling heat.

[0004] However, when the heat exchange medium is introduced for heat exchange operation, in order to ensure more sufficient heat exchange, the length of the pipeline is longer at this time, the purpose is to increase the heat exchange time and increase the heat exchange area, but when the pipeline is longer and arranged directly horizontally or vertically, the space occupied is larger, since the space in the factory building is limited, at this time, the direct horizontal or vertical arrangement of the pipeline will affect other processing operations in the factory building, which brings inconvenience to the user. In view of this, we propose a chemical fertilizer production waste heat recovery system. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a chemical fertilizer production waste heat recovery system to solve the defects proposed in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] A chemical fertilizer production waste heat recovery system, comprising a heat preservation conveying pipe, the both ends of the heat preservation conveying pipe are fixedly installed with end heat preservation pipes, the middle part of the heat preservation conveying pipe is fixedly installed with a through pipe, the end of the through pipe is fixedly installed with a curved pipe, the bottom curved part of the curved pipe is integrally formed with a transparent heat preservation pipe, the curved pipe is provided with a spiral heat exchange pipe, the water inlet end of the spiral heat exchange pipe is fixedly installed with a heat exchange medium inlet pipe which penetrates out of the curved pipe, the water outlet end of the spiral heat exchange pipe is fixedly installed with a heat exchange medium outlet pipe which penetrates out of the curved pipe, the pipe wall at the middle part position of the heat preservation conveying pipe is fixedly installed with a partition plate, the partition plate extends into the through pipe, and the left and right sides of the partition plate and the inner wall of the heat preservation conveying pipe are fixedly installed with arc transition plates.

[0008] Preferably, the end heat preservation pipe is fixedly installed with a first valve, and the spiral heat exchange pipe is in a spiral shape.

[0009] Preferably, the heat exchange medium inlet pipe is located close to the water outlet end of the curved pipe, and the heat exchange medium outlet pipe is located close to the water inlet end of the curved pipe.

[0010] Preferably, the surface of the arc-shaped transition plate is arc-shaped, and a corner protection protrusion is fixedly installed on the pipe wall at the connection position of the heat preservation conveying pipe and the through pipe.

[0011] Preferably, the bottom of the transparent heat preservation pipe is fixedly installed with a condensate pipe, the bottom end of the condensate pipe is fixedly installed with a drain pipe, and the end of the drain pipe is fixedly installed with a transparent cylinder.

[0012] Preferably, the bottom end of the transparent cylinder is fixedly installed with a conical cylinder, the bottom end of the conical cylinder is fixedly installed with an external drain pipe, and the external drain pipe is fixedly installed with a second valve.

[0013] Preferably, a one-way valve is fixedly installed on the condensate pipe, and the one-way valve is used for fluid flowing from top to bottom.

[0014] Preferably, the condensate pipe is located at the bottom center position of the transparent heat preservation pipe, and the conical cylinder is in a funnel shape.

[0015] Compared with the prior art, the utility model has the beneficial effects that:

[0016] 1. The heat preservation conveying pipe and the end heat preservation pipes at the two ends thereof are arranged, heat loss in the conveying process is reduced, stable conveying of residual heat is ensured, the through pipe in the middle of the heat preservation conveying pipe and the curved pipe connected therewith cooperate with the internal spiral heat exchange pipe, high-efficiency heat exchange of residual heat is realized, the positions of the heat exchange medium inlet pipe and the heat exchange medium outlet pipe are designed, the heat exchange process is more reasonable, the heat exchange efficiency is improved, the curved pipe is arranged in a curved shape, space occupation is reduced, and the effects of reducing space occupation and high-efficiency heat exchange are achieved.

[0017] 2. The flow path of fluid in the pipe is optimized by the partition plate and the arc-shaped transition plate, smooth conveying is ensured, the transparent heat preservation pipe can directly observe the internal condition, the condensate pipe, the drain pipe and the transparent cylinder connected to the bottom of the transparent heat preservation pipe and other structures realize effective collection and discharge of condensate water, the one-way valve ensures one-way flow of the condensate water, backflow is avoided, the conical cylinder and the external drain pipe and the second valve are arranged, the external discharge of the condensate water is facilitated, and use is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 It is a whole structure schematic view of the utility model;

[0019] Fig. 2 It is the sectional view of the heat preservation conveying pipe and the conducting pipe of the utility model;

[0020] Fig. 3 It is the partial structure schematic view of the utility model;

[0021] The meaning of each mark in the figure is:

[0022] 1, heat preservation conveying pipe; 10, end heat preservation pipe; 11, first valve; 12, conducting pipe; 13, curved pipe; 131, transparent heat preservation pipe; 14, spiral heat exchange pipe; 15, heat exchange medium inlet pipe; 151, heat exchange medium outlet pipe; 16, corner protection protrusion; 17, partition plate; 18, arc transition plate;

[0023] 2, condensate pipe; 20, one-way valve; 21, drain pipe; 22, transparent cylinder; 23, conical cylinder; 24, external discharge pipe; 25, second valve. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0025] Please refer to Figs. 1-3 The utility model provides a technical scheme: a chemical fertilizer production waste heat recovery system, including heat preservation conveying pipe 1, both ends of heat preservation conveying pipe 1 are fixedly installed with end heat preservation pipe 10, the first valve 11 is fixedly installed on end heat preservation pipe 10, guaranteeing that the end of end heat preservation pipe 10 can be connected to the wastewater or waste gas discharge pipeline on the outside chemical fertilizer production equipment in use;

[0026] Specifically, the middle part of heat preservation conveying pipe 1 is fixedly installed with conducting pipe 12, the end of conducting pipe 12 is fixedly installed with curved pipe 13, the bottom curved position of curved pipe 13 is integrally formed with transparent heat preservation pipe 131, transparent heat preservation pipe 131 is transparent, for observation operation;Curved pipe 13 is provided with spiral heat exchange pipe 14, spiral heat exchange pipe 14 is spiral, the water inlet end of spiral heat exchange pipe 14 is fixedly installed with heat exchange medium inlet pipe 15 that penetrates curved pipe 13, the water outlet end of spiral heat exchange pipe 14 is fixedly installed with heat exchange medium outlet pipe 151 that penetrates curved pipe 13, heat exchange medium inlet pipe 15 is located close to the water outlet end of curved pipe 13, heat exchange medium outlet pipe 151 is located close to the water inlet end of curved pipe 13, so that the heat exchange medium and waste heat can realize counterflow heat exchange in spiral heat exchange pipe 14, greatly improve the heat exchange efficiency, more fully recycle waste heat;

[0027] Specifically, the partition plate 17 is fixedly installed on the pipe wall at the middle position of the heat preservation conveying pipe 1, extends into the through pipe 12, can reasonably separate the residual heat fluid in the pipe, optimizes the flow path of the fluid, and improves the flowability of the residual heat in the pipe; the arc-shaped transition plates 18 are fixedly installed between the left and right sides of the partition plate 17 and the inner wall of the heat preservation conveying pipe 1, the surface of the arc-shaped transition plate 18 is arc-shaped, so that when the residual heat fluid passes by the partition plate 17, smooth transition can be realized, fluid resistance is reduced, and the smoothness of residual heat conveying is ensured.

[0028] In the embodiment, the corner protection protrusion 16 is fixedly installed on the pipe wall at the connecting position of the heat preservation conveying pipe 1 and the through pipe 12, so that the connecting position can be protected during residual heat conveying, damage caused by long-term erosion of the fluid or external force collision is prevented, and the service life of the equipment is prolonged.

[0029] Specifically, the condensate pipe 2 is fixedly installed at the bottom of the transparent heat preservation pipe 131, the condensate pipe 2 is located at the bottom center position of the transparent heat preservation pipe 131, the bottom end of the condensate pipe 2 is fixedly installed with the drain pipe 21, the end of the drain pipe 21 is fixedly installed with the transparent cylinder 22, so that the condensate generated in the transparent heat preservation pipe 131 can be collected in time and effectively, and the discharge condition of the condensate can be directly observed through the transparent cylinder 22.

[0030] Further, the conical cylinder 23 is fixedly installed at the bottom end of the transparent cylinder 22, the outer discharge pipe 24 is fixedly installed at the bottom end of the conical cylinder 23, the second valve 25 is fixedly installed on the outer discharge pipe 24, the conical cylinder 23 is funnel-shaped, so that the conical cylinder 23 can play a role in gathering condensate when discharging condensate, the discharge flow can be easily controlled, and the discharging time of the condensate can be flexibly controlled through the second valve 25.

[0031] It is worth noting that the one-way valve 20 is fixedly installed on the condensate pipe 2, the one-way valve 20 is used for fluid flowing from top to bottom, so that the backflow of the condensate can be effectively prevented, the one-way nature of the condensate discharge is ensured, and interference to the normal operation of the residual heat recovery system is avoided.

[0032] When the residual heat recovery system for chemical fertilizer production is used, first, the end heat preservation pipe 10 at the end of the heat preservation conveying pipe 1 is connected to the hot wastewater or hot waste gas discharge pipeline of an external chemical fertilizer production equipment, the first valve 11 is opened, the residual heat flows into the heat preservation conveying pipe 1, the residual heat flows in the heat preservation conveying pipe 1 to the through pipe 12 at the middle, and then enters the curved pipe 13;

[0033] In the curved pipe 13, the spiral heat exchange pipe 14 starts to play a role, the heat exchange medium is introduced into the spiral heat exchange pipe 14 through the heat exchange medium inlet pipe 15, since the heat exchange medium inlet pipe 15 is close to the water outlet end of the curved pipe 13, the heat exchange medium outlet pipe 151 is close to the water inlet end, the heat exchange medium and the waste heat realize counter-flow heat exchange, the waste heat is recycled efficiently, and the operator can observe the situation in the pipe through the transparent heat preservation pipe 131;

[0034] With the waste heat being recycled, the condensed water generated is gathered at the bottom of the transparent heat preservation pipe 131, is led out through the condensed water pipe 2 located at the center position of the bottom, under the action of the one-way valve 20, is unidirectionally flowed into the drain pipe 21, and then is entered into the transparent cylinder 22, so that the accumulation of the condensed water is observed conveniently; when the condensed water needs to be discharged, the second valve 25 on the outer discharge pipe 24 is opened, the condensed water is gathered through the funnel-shaped conical cylinder 23 and is discharged outward.

[0035] The basic principle, main features and advantages of the utility model are shown and described above. It should be understood by the person skilled in the art that the utility model is not limited by the above-mentioned embodiments, the above-mentioned embodiments and the description in the specification are only preferred examples of the utility model, and are not used to limit the utility model, under the premise that the utility model is not deviated from the spirit and range, the utility model will have various changes and improvements, and these changes and improvements all fall into the range of the utility model to be protected. The protection range of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A system for recovering waste heat from a chemical fertilizer production, comprising an insulated transfer pipe (1), characterized in that: Both ends of the heat preservation conveying pipe (1) are fixedly installed with end heat preservation pipes (10), the middle part of the heat preservation conveying pipe (1) is fixedly installed with a through pipe (12), the end of the through pipe (12) is fixedly installed with a curved pipe (13), the bottom bending part of the curved pipe (13) is integrally formed with a transparent heat preservation pipe (131), the curved pipe (13) is provided with a spiral heat exchange pipe (14), the water inlet end of the spiral heat exchange pipe (14) is fixedly installed with a heat exchange medium inlet pipe (15) penetrating out of the curved pipe (13), the water outlet end of the spiral heat exchange pipe (14) is fixedly installed with a heat exchange medium outlet pipe (151) penetrating out of the curved pipe (13), the pipe wall at the middle part of the heat preservation conveying pipe (1) is fixedly installed with a partition plate (17), the partition plate (17) extends into the through pipe (12), and the left and right sides of the partition plate (17) and the inner wall of the heat preservation conveying pipe (1) are fixedly installed with arc transition plates (18).

2. The chemical fertilizer production waste heat recovery system according to claim 1, characterized in that: The first valve (11) is fixedly installed on the end heat preservation pipe (10), and the spiral heat exchange pipe (14) is spiral.

3. The chemical fertilizer production waste heat recovery system according to claim 1, characterized in that: The heat exchange medium inlet pipe (15) is located close to the water outlet end of the curved pipe (13), and the heat exchange medium outlet pipe (151) is located close to the water inlet end of the curved pipe (13).

4. The chemical fertilizer production waste heat recovery system according to claim 1, characterized in that: The surface of the arc transition plate (18) is arc-shaped, and the pipe wall at the connection part of the heat preservation conveying pipe (1) and the through pipe (12) is fixedly installed with a corner protection protrusion (16).

5. The system for recovering waste heat from a chemical fertilizer production according to claim 1, characterized in that: The bottom of the transparent heat preservation pipe (131) is fixedly installed with a condensate pipe (2), the bottom end of the condensate pipe (2) is fixedly installed with a drain pipe (21), and the end of the drain pipe (21) is fixedly installed with a transparent cylinder (22).

6. The chemical fertilizer production waste heat recovery system according to claim 5, characterized in that: The bottom end of the transparent cylinder (22) is fixedly installed with a conical cylinder (23), the bottom end of the conical cylinder (23) is fixedly installed with an external discharge pipe (24), and the second valve (25) is fixedly installed on the external discharge pipe (24).

7. The system for recovering waste heat from a chemical fertilizer production according to claim 6, characterized by: The one-way valve (20) is fixedly installed on the condensate pipe (2), and is used for fluid flowing from top to bottom.

8. The chemical fertilizer production waste heat recovery system according to claim 7, characterized in that: The condensate pipe (2) is located at the bottom center position of the transparent heat preservation pipe (131), and the conical cylinder (23) is funnel-shaped.

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