Industrial steam recycling system

Abstract

The utility model discloses an industrial steam recycling system which comprises a steam header, an air conditioner hot water supply assembly, a domestic hot water supply assembly, an industrial hot water supply assembly, a steam condensation water collecting tank and a condensation water high-level tank. A first heat exchanger is arranged in the air conditioner hot water supply assembly, a steam heating tank is arranged in the air conditioner hot water supply assembly, and a second heat exchanger and a plate type preheater are arranged in the domestic hot water supply assembly. A steam inlet of the steam-distributing cylinder is communicated with steam generating equipment, a steam outlet of the steam-distributing cylinder is respectively communicated with hot air inlets of the first heat exchanger, the steam heating tank and the second heat exchanger, and cold air outlets of the first heat exchanger, the steam heating tank and the second heat exchanger are all communicated with a condensate water inlet of the steam condensate water collecting tank. The steam condensed water collecting tank is provided with a condensed water outlet, the condensed water outlet is communicated with a preheating water inlet of the plate-type preheater, and a preheating water outlet of the plate-type preheater is communicated with the condensed water high-level tank.

Description

Technical Field

[0001] The utility model relates to the field of steam utilization, in particular to an industrial steam recovery and utilization system. Background Art

[0002] Steam equipment and boilers are required in many enterprises. However, many enterprises that use steam equipment currently discharge 80% of the steam during use due to equipment reasons, and cannot collect and reuse it, resulting in energy waste, increased enterprise costs, and also causing certain impacts on the environment.

[0003] Patent No. CN202120334292.8 discloses a steam condensate reuse system, which can utilize waste heat, but it can only provide heat to a single heat demand area and cannot meet the heating needs of multiple heat demand areas; at the same time, the condensate is collected in a condensate collection tank, which is usually located underground, and the underground rainwater and sewage pipes, cable trenches, etc. of chemical enterprises are often dense, and the site selection of the condensate collection tank is greatly restricted. In addition, the cost of installing the condensate collection tank underground is high, which affects the use effect of the steam waste heat utilization system. Utility Model Content

[0004] The utility model aims to solve the above problems and provide an industrial steam recovery and utilization system which has a simple structure and is convenient to use.

[0005] In order to achieve the above purpose, the technical solution of the utility model is:

[0006] An industrial steam recovery and utilization system comprises a steam cylinder, an air-conditioning hot water supply component, a domestic hot water supply component, an industrial hot water supply component, a steam condensate collection tank and a condensate high-level tank; a first heat exchanger is arranged in the air-conditioning hot water supply component, a steam heating tank is arranged in the air-conditioning hot water supply component, and a second heat exchanger and a plate preheater are arranged in the domestic hot water supply component; a steam inlet of the steam cylinder is connected with a steam generating device, a steam outlet of the steam cylinder is connected with the hot air inlet of the first heat exchanger, the steam heating tank and the second heat exchanger respectively, a cold air outlet of the first heat exchanger, the steam heating tank and the second heat exchanger is connected with the condensate inlet of the steam condensate collection tank, a condensate outlet is arranged at the bottom end of the steam condensate collection tank and is connected with the preheating inlet of the plate preheater through the condensate outlet, and the preheating outlet of the plate preheater is connected with the condensate high-level tank.

[0007] Furthermore, the air-conditioning hot water supply component includes an air-conditioning hot water return water circuit, an air-conditioning hot water supply water circuit, and a first buffer tank; one end of the air-conditioning hot water return water circuit is connected to the air-conditioning return water outlet, and the other end of the air-conditioning hot water return water circuit is connected to the air-conditioning hot water return port of the first heat exchanger; one end of the air-conditioning hot water supply water circuit is connected to the air-conditioning hot water outlet of the first heat exchanger, and the other end of the air-conditioning hot water supply water circuit is connected to the air-conditioning hot water inlet; the first buffer tank is connected to the air-conditioning hot water return water circuit.

[0008] Furthermore, the air conditioning hot water supply component also includes a first controller and a first circulating water circuit. The first controller is electrically connected to a first control valve arranged on the air conditioning hot water return water circuit and the air conditioning hot water supply water circuit, and a first circulating pump arranged in the first circulating water circuit.

[0009] Furthermore, the domestic hot water supply component includes a domestic hot water return waterway and a domestic hot water supply waterway; one end of the domestic hot water return waterway is connected to the domestic return water outlet, and the other end of the domestic hot water return waterway and one end of the tap water pipe are both connected to the domestic hot water return port of the steam heating tank; one end of the domestic hot water supply waterway is connected to the domestic hot water outlet of the steam heating tank, and the other end of the domestic hot water supply waterway is connected to the domestic hot water inlet.

[0010] Furthermore, a heating cavity is provided at the bottom of the steam heating tank, and a water storage cavity is provided at the upper end of the steam heating tank; the hot air inlet and cold air outlet of the steam heating tank are connected to the heating cavity, and the domestic hot water return port and domestic hot water outlet of the steam heating tank are connected to the water storage cavity.

[0011] Furthermore, the domestic hot water supply component also includes a second controller and a second circulating water circuit. The second controller is electrically connected to a second control valve arranged on the domestic hot water return water circuit and the domestic hot water supply water circuit and a second circulating pump arranged in the second circulating water circuit.

[0012] Furthermore, the industrial hot water supply component includes an industrial hot water return water circuit, an industrial hot water supply water circuit, and a second buffer tank; one end of the industrial hot water return water circuit is connected to the heating water inlet of the plate preheater, and the heating water outlet of the plate preheater is connected to the industrial hot water return water outlet of the second heat exchanger; one end of the industrial hot water supply water circuit is connected to the industrial hot water outlet of the second heat exchanger, and the other end of the industrial hot water supply water circuit is connected to the industrial hot water inlet; the second buffer tank is connected to the industrial hot water return water circuit, and the top of the second buffer tank is connected to the industrial hot water supply water circuit and a water control valve is provided on the connecting water circuit.

[0013] Furthermore, the industrial hot water supply component also includes a third controller and a third circulating water circuit. The third controller is electrically connected to a third control valve and a water control valve arranged on the industrial hot water return water circuit and the industrial hot water supply water circuit, and a third circulating pump arranged in the third circulating water circuit.

[0014] Furthermore, a fourth circulation water circuit and a fourth control valve are arranged on the water circuit between the condensate outlet at the bottom end of the steam condensate collection tank and the preheating water inlet of the plate preheater, and a fourth controller is arranged on the steam condensate collection tank. The fourth controller is electrically connected to the fourth control valve and a fourth circulation pump arranged in the fourth circulation water circuit.

[0015] Furthermore, the first circulating water circuit, the second circulating water circuit, the third circulating water circuit, and the fourth circulating water circuit are all an annular water circuit structure equipped with a circulating pump, and the water circuit connection end of the annular water circuit is provided with a control valve structure.

[0016] Compared with the prior art, the utility model has the following advantages and positive effects:

[0017] The utility model adopts a design of using a steam distribution cylinder to distribute hot steam to an air-conditioning hot water supply component, a domestic hot water supply component, and an industrial hot water supply component, so that the hot steam can meet the heat supply requirements of air-conditioning hot water, domestic hot water, and industrial hot water at the same time, thereby improving the waste heat utilization effect of the hot steam; and the utility model adopts a steam condensate collection tank as a condensate transfer component, which only needs to store a small amount of condensate, and the small amount of condensate can be used to perform preliminary preheating for a plate preheater, and the condensate after preliminary preheating will flow into a condensate high-level tank for storage and utilization; the volume of the steam condensate collection tank is small, and it is convenient to place it underground, which reduces the site selection and placement difficulty of the condensate collection tank in the steam waste heat utilization system, and at the same time reduces the underground installation cost of the condensate collection tank, further improving the use effect of the steam waste heat utilization system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 It is a structural schematic diagram of the utility model;

[0020] Figure 2 The connection structure diagram of the air conditioning hot water supply components;

[0021] Figure 3 Connection diagram for domestic hot water supply components;

[0022] Figure 4 Connection diagram for industrial hot water supply components;

[0023] Figure 5 This is the connection structure diagram of the steam condensate collection tank;

[0024] Figure 6 This is the connection structure diagram of the condensate high-level tank. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work, any modifications, equivalent replacements, improvements, etc., should be included in the protection scope of the utility model.

[0026] like Figures 1 to 6 As shown, the present embodiment discloses an industrial steam recovery and utilization system, comprising a steam cylinder, an air-conditioning hot water supply component, a domestic hot water supply component, an industrial hot water supply component, a steam condensate collecting tank, and a condensate high-level tank; a first heat exchanger is arranged in the air-conditioning hot water supply component, a steam heating tank is arranged in the air-conditioning hot water supply component, and a second heat exchanger and a plate preheater are arranged in the domestic hot water supply component; a steam inlet of the steam cylinder is connected with a steam generating device, a steam outlet of the steam cylinder is connected with the hot air inlet of the first heat exchanger, the steam heating tank, and the second heat exchanger respectively, a cold air outlet of the first heat exchanger, the steam heating tank, and the second heat exchanger are all connected with the condensate inlet of the steam condensate collecting tank, a condensate outlet is arranged at the bottom end of the steam condensate collecting tank and is connected with the preheating inlet of the plate preheater through the condensate outlet, and a preheating outlet of the plate preheater is connected with the condensate high-level tank.

[0027] The air-conditioning hot water supply component includes an air-conditioning hot water return water circuit, an air-conditioning hot water supply water circuit, and a first buffer tank; one end of the air-conditioning hot water return water circuit is connected to the air-conditioning return water outlet, and the other end of the air-conditioning hot water return water circuit is connected to the air-conditioning hot water return port of the first heat exchanger; one end of the air-conditioning hot water supply water circuit is connected to the air-conditioning hot water outlet of the first heat exchanger, and the other end of the air-conditioning hot water supply water circuit is connected to the air-conditioning hot water inlet; the first buffer tank is connected to the air-conditioning hot water return water circuit.

[0028] The air conditioning hot water supply component also includes a first controller and a first circulating water circuit. The first controller is electrically connected to a first control valve arranged on the air conditioning hot water return water circuit and the air conditioning hot water supply water circuit, and a first circulating pump arranged in the first circulating water circuit.

[0029] The air conditioning return water and the hot steam meet in the first heat exchanger and realize heat exchange. After the air conditioning return water is heated, it is supplied to the hot water supply water circuit again to realize the air conditioning heat supply; after the heat exchange, the hot steam condenses and flows into the steam condensate collection tank.

[0030] The domestic hot water supply component includes a domestic hot water return waterway and a domestic hot water supply waterway; one end of the domestic hot water return waterway is connected to the domestic return water outlet, and the other end of the domestic hot water return waterway and one end of the tap water pipe are both connected to the domestic hot water return port of the steam heating tank; one end of the domestic hot water supply waterway is connected to the domestic hot water outlet of the steam heating tank, and the other end of the domestic hot water supply waterway is connected to the domestic hot water inlet.

[0031] A heating cavity is arranged at the bottom of the steam heating tank, and a water storage cavity is arranged at the upper end of the steam heating tank; the hot air inlet and the cold air outlet of the steam heating tank are connected to the heating cavity, and the domestic hot water return port and the domestic hot water outlet of the steam heating tank are connected to the water storage cavity.

[0032] The domestic hot water supply assembly also includes a second controller and a second circulating water circuit. The second controller is electrically connected to a second control valve arranged on the domestic hot water return water circuit and the domestic hot water supply water circuit and a second circulating pump arranged in the second circulating water circuit.

[0033] After entering the heating cavity at the bottom of the steam heating tank, the hot steam heats the domestic return water or tap water in the water storage cavity. The heated water is then supplied to the domestic hot water supply circuit again, thus realizing the supply of heat for domestic water. After cooling in the heating cavity, the hot steam condenses and flows into the steam condensate collection tank.

[0034] The industrial hot water supply component includes an industrial hot water return water circuit, an industrial hot water supply water circuit, and a second buffer tank; one end of the industrial hot water return water circuit is connected to the heating water inlet of the plate preheater, and the heating water outlet of the plate preheater is connected to the industrial hot water return water outlet of the second heat exchanger; one end of the industrial hot water supply water circuit is connected to the industrial hot water outlet of the second heat exchanger, and the other end of the industrial hot water supply water circuit is connected to the industrial hot water inlet; the second buffer tank is connected to the industrial hot water return water circuit, and the top of the second buffer tank is connected to the industrial hot water supply water circuit and a water control valve is provided on the connecting water circuit.

[0035] The industrial hot water supply component also includes a third controller and a third circulating water circuit. The third controller is electrically connected to a third control valve and a water control valve arranged on the industrial hot water return water circuit and the industrial hot water supply water circuit, and a third circulating pump arranged in the third circulating water circuit.

[0036] The industrial return water and the condensate collected in the steam condensate collection tank meet for the first time in the plate preheater and the industrial return water is preliminarily preheated. After the preliminarily preheated industrial return water, the condensate is pumped to the condensate high-level tank for storage; then the preliminarily preheated industrial return water and the hot steam meet for the second time in the second heat exchanger and realize heat exchange. After the industrial return water is heated, it is supplied to the industrial hot water supply waterway again to realize the supply of heat for industrial water; after the heat exchange, the hot steam condenses and flows into the steam condensate collection tank; when the industrial return water does not need to be heated, it can be directly returned to the industrial hot water supply waterway through the buffer tank without passing through the heating mechanism.

[0037] A fourth circulation water circuit and a fourth control valve are arranged on the water circuit between the condensate outlet at the bottom of the steam condensate collection tank and the preheating water inlet of the plate preheater. A fourth controller is arranged on the steam condensate collection tank. The fourth controller is electrically connected to the fourth control valve and a fourth circulation pump arranged in the fourth circulation water circuit.

[0038] The first circulating water circuit, the second circulating water circuit, the third circulating water circuit and the fourth circulating water circuit are all an annular water circuit structure equipped with a circulating pump, and the water circuit connection end of the annular water circuit is provided with a control valve structure.

[0039] The controller can control the temperature and flow status of each water circuit to realize the automatic control operation of the steam waste heat utilization system; at the same time, through the coordinated control of the circulating water circuit and the control valve, the self-circulation operation of the return water flow can be realized, so that the water flow in the heat exchanger or steam heating tank is in contact with the hot steam for a long time, thereby increasing the heating temperature of the return water flow and further improving the use effect of the utility model.

[0040] The utility model adopts a design of using a steam distribution cylinder to distribute hot steam to an air-conditioning hot water supply component, a domestic hot water supply component, and an industrial hot water supply component, so that the hot steam can meet the heat supply requirements of air-conditioning hot water, domestic hot water, and industrial hot water at the same time, thereby improving the waste heat utilization effect of the hot steam; and the utility model adopts a steam condensate collection tank as a condensate transfer component, which only needs to store a small amount of condensate, and the small amount of condensate can be used to perform preliminary preheating for a plate preheater, and the condensate after preliminary preheating will flow into a condensate high-level tank for storage and utilization; the volume of the steam condensate collection tank is small, and it is convenient to place it underground, which reduces the site selection and placement difficulty of the condensate collection tank in the steam waste heat utilization system, and at the same time reduces the underground installation cost of the condensate collection tank, further improving the use effect of the steam waste heat utilization system.

Claims

1. An industrial steam recovery and utilization system, characterized in that: The industrial steam recovery and utilization system comprises a steam cylinder, an air-conditioning hot water supply component, a domestic hot water supply component, an industrial hot water supply component, a steam condensate collection tank and a condensate high-level tank; a first heat exchanger is arranged in the air-conditioning hot water supply component, a steam heating tank is arranged in the air-conditioning hot water supply component, and a second heat exchanger and a plate preheater are arranged in the domestic hot water supply component; a steam inlet of the steam cylinder is connected with a steam generating device, a steam outlet of the steam cylinder is connected with the hot air inlet of the first heat exchanger, the steam heating tank and the second heat exchanger respectively, and the cold air outlets of the first heat exchanger, the steam heating tank and the second heat exchanger are all connected with the condensate inlet of the steam condensate collection tank, a condensate outlet is arranged at the bottom end of the steam condensate collection tank and is connected with the preheating inlet of the plate preheater through the condensate outlet, and the preheating outlet of the plate preheater is connected with the condensate high-level tank.

2. The industrial steam recovery and utilization system according to claim 1, characterized in that: The air-conditioning hot water supply component includes an air-conditioning hot water return water circuit, an air-conditioning hot water supply water circuit, and a first buffer tank; one end of the air-conditioning hot water return water circuit is connected to the air-conditioning return water outlet, and the other end of the air-conditioning hot water return water circuit is connected to the air-conditioning hot water return port of the first heat exchanger; one end of the air-conditioning hot water supply water circuit is connected to the air-conditioning hot water outlet of the first heat exchanger, and the other end of the air-conditioning hot water supply water circuit is connected to the air-conditioning hot water inlet; the first buffer tank is connected to the air-conditioning hot water return water circuit.

3. The industrial steam recovery and utilization system according to claim 2, characterized in that: The air conditioning hot water supply component also includes a first controller and a first circulating water circuit. The first controller is electrically connected to a first control valve arranged on the air conditioning hot water return water circuit and the air conditioning hot water supply water circuit, and a first circulating pump arranged in the first circulating water circuit.

4. The industrial steam recovery and utilization system according to claim 3, characterized in that: The domestic hot water supply component includes a domestic hot water return waterway and a domestic hot water supply waterway; one end of the domestic hot water return waterway is connected to the domestic return water outlet, and the other end of the domestic hot water return waterway and one end of the tap water pipe are both connected to the domestic hot water return port of the steam heating tank; one end of the domestic hot water supply waterway is connected to the domestic hot water outlet of the steam heating tank, and the other end of the domestic hot water supply waterway is connected to the domestic hot water inlet.

5. The industrial steam recovery and utilization system according to claim 4, characterized in that: A heating cavity is arranged at the bottom of the steam heating tank, and a water storage cavity is arranged at the upper end of the steam heating tank; the hot air inlet and the cold air outlet of the steam heating tank are connected to the heating cavity, and the domestic hot water return port and the domestic hot water outlet of the steam heating tank are connected to the water storage cavity.

6. The industrial steam recovery and utilization system according to claim 5, characterized in that: The domestic hot water supply assembly also includes a second controller and a second circulating water circuit. The second controller is electrically connected to a second control valve arranged on the domestic hot water return water circuit and the domestic hot water supply water circuit and a second circulating pump arranged in the second circulating water circuit.

7. The industrial steam recovery and utilization system according to claim 6, characterized in that: The industrial hot water supply component includes an industrial hot water return water circuit, an industrial hot water supply water circuit, and a second buffer tank; one end of the industrial hot water return water circuit is connected to the heating water inlet of the plate preheater, and the heating water outlet of the plate preheater is connected to the industrial hot water return water outlet of the second heat exchanger; one end of the industrial hot water supply water circuit is connected to the industrial hot water outlet of the second heat exchanger, and the other end of the industrial hot water supply water circuit is connected to the industrial hot water inlet; the second buffer tank is connected to the industrial hot water return water circuit, and the top of the second buffer tank is connected to the industrial hot water supply water circuit and a water control valve is provided on the connecting water circuit.

8. The industrial steam recovery and utilization system according to claim 7, characterized in that: The industrial hot water supply component also includes a third controller and a third circulating water circuit. The third controller is electrically connected to a third control valve and a water control valve arranged on the industrial hot water return water circuit and the industrial hot water supply water circuit, and a third circulating pump arranged in the third circulating water circuit.

9. The industrial steam recovery and utilization system according to claim 8, characterized in that: A fourth circulation water circuit and a fourth control valve are arranged on the water circuit between the condensate outlet at the bottom of the steam condensate collection tank and the preheating water inlet of the plate preheater. A fourth controller is arranged on the steam condensate collection tank. The fourth controller is electrically connected to the fourth control valve and a fourth circulation pump arranged in the fourth circulation water circuit.

10. The industrial steam recovery and utilization system according to claim 9, characterized in that: The first circulating water circuit, the second circulating water circuit, the third circulating water circuit and the fourth circulating water circuit are all an annular water circuit structure equipped with a circulating pump, and the water circuit connection end of the annular water circuit is provided with a control valve structure.

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