A low-pressure saturated steam and saturated condensate recovery and treatment device

Abstract

This utility model discloses a device for recovering and treating low-pressure saturated steam and saturated condensate, including a recovery treatment vessel and a liquid level regulating device. The recovery treatment vessel has an internal cavity structure and is equipped with a steam-condensate inlet, a low-pressure saturated steam outlet, and a saturated condensate outlet. The steam-condensate inlet is located in the middle of the recovery treatment vessel and is connected to a steam-condensate pipeline network. The low-pressure saturated steam outlet is located at the top of the recovery treatment vessel and is equipped with a check valve and connected to a low-pressure steam pipeline network. The saturated condensate outlet is located on the lower side of the recovery treatment vessel and is connected to the inlet of the liquid level regulating device. The outlet of the liquid level regulating device is connected to a boiler water supply system. This device expands the capacity of the steam-condensate, reduces its pressure, and exchanges heat, thus recovering and reusing thermal energy, improving steam utilization efficiency, and realizing the secondary recovery and reuse of steam and condensate. It features high efficiency, energy saving, and environmental protection.

Description

Technical Field

[0001] This utility model relates to the field of coking steam treatment technology, and in particular to a low-pressure saturated steam and saturated condensate recovery and treatment device. Background Technology

[0002] The high-temperature, high-pressure (or medium-pressure) steam used in coking processes generates a large amount of condensate after passing through heat exchange equipment. Direct discharge of this condensate not only results in low steam utilization efficiency and energy waste but also generates noise, negatively impacting the health of employees and contradicting the current national requirements for energy conservation, emission reduction, and green development. Therefore, it is necessary to develop a device suitable for recovering steam condensate to achieve efficient recovery, resource utilization, and environmentally friendly practices. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a highly efficient recycling and treatment device for low-pressure saturated steam and saturated condensate.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: it includes a recovery and treatment vessel and a liquid level regulating device; the recovery and treatment vessel is a vessel structure with an inner cavity, and is provided with a steam condensate inlet, a low-pressure saturated steam outlet and a saturated condensate outlet; the steam condensate inlet is located in the middle of the recovery and treatment vessel and is connected to the steam condensate pipeline network; the low-pressure saturated steam outlet is located at the top of the recovery and treatment vessel, and is provided with a check valve and connected to the low-pressure steam pipeline network; the saturated condensate outlet is located on the lower side of the recovery and treatment vessel, and is connected to the inlet of the liquid level regulating device, and the outlet of the liquid level regulating device is connected to the boiler water supply system.

[0005] Furthermore, the recycling treatment vessel is also provided with a vent; the vent is located at the top of the recycling treatment vessel and is equipped with a safety valve.

[0006] Furthermore, the recycling reactor is also provided with a vent; the vent is located at the bottom of the recycling reactor and is equipped with a vent valve.

[0007] Furthermore, a dual-flange level gauge is also provided; the dual-flange level gauge measures the liquid level in the recovery treatment vessel, and the dual-flange level gauge and the liquid level regulating device are connected in series by an automatic control instrument line for logic series control.

[0008] The beneficial effects of adopting the above technical solution are as follows: This utility model expands, depressurizes, and exchanges heat in the steam condensate recovery treatment vessel to separate it into low-pressure saturated steam and saturated condensate, thereby recovering and reusing heat energy, improving the utilization efficiency of high-temperature and high-pressure (or medium-pressure) steam, and realizing the secondary recovery and utilization of low-pressure saturated steam and saturated condensate. It has the characteristics of high efficiency, energy saving, low carbon, green and environmental protection. Attached Figure Description

[0009] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0010] Figure 1 This is a schematic diagram of the structure of this utility model.

[0011] In the diagram: 1. Recycling treatment vessel; 2. Vent port; 3. Safety valve; 4. Vent port; 5. Vent valve; 6. Steam condensate inlet; 7. Low-pressure saturated steam outlet; 8. Saturated condensate outlet; 9. Check valve; 10. Double flange level gauge; 11. Level regulating device. Detailed Implementation

[0012] Figure 1 As shown, this low-pressure saturated steam and saturated condensate recovery and treatment device includes a recovery and treatment vessel 1 and a level regulating device 11. The recovery and treatment vessel 1 is a vessel structure with an inner cavity, and has a steam-condensate inlet 6, a low-pressure saturated steam outlet 7, and a saturated condensate outlet 8 connected to the inner cavity. The steam-condensate inlet 6 is located in the middle of the recovery and treatment vessel 1 and is connected to a steam-condensate pipeline network. The low-pressure saturated steam outlet 7 is located at the top of the recovery and treatment vessel 1, and is equipped with a check valve 9 and connected to a low-pressure steam pipeline network. The saturated condensate outlet 8 is located on the lower side of the recovery and treatment vessel 1, and is connected to the inlet of the level regulating device 11. The outlet of the level regulating device 11 is connected to the boiler water supply system. With this structure, high-temperature and high-pressure (or medium-pressure) steam condensate continuously and uniformly enters the recovery treatment vessel 1 through the steam condensate inlet 6 for adiabatic expansion, immediately separating into secondary steam and hot condensate. Then, expansion, pressure reduction, and heat exchange occur. Finally, the separated low-pressure saturated steam (0.5 MPa) is connected to the low-pressure steam network through the low-pressure saturated steam outlet 7 and check valve 9. The saturated condensate is automatically and continuously recovered to the boiler water supply system via the level regulating device 11. This not only reduces equipment damage caused by continuous discharge of high-temperature and high-pressure (or medium-pressure) steam condensate but also helps recover some of the heat lost during continuous steam condensate discharge, improving the utilization rate of steam condensate.

[0013] Figure 1 As shown, the recovery and treatment vessel 1 of this low-pressure saturated steam and saturated condensate recovery and treatment device is also equipped with a vent 2; the vent 2 is located at the top of the recovery and treatment vessel 1, and the vent 2 is equipped with a safety valve 3. In this way, by setting up the vent 2 and the safety valve 3, the pressure inside the recovery and treatment vessel 1 is released when it is too high, so as to ensure the safe operation of the system.

[0014] Figure 1As shown, the recovery and treatment vessel 1 of this low-pressure saturated steam and saturated condensate recovery and treatment device is also equipped with a vent port 4; the vent port 4 is located at the bottom of the recovery and treatment vessel 1, and the vent port 4 is equipped with a vent valve 5. In this way, when venting is required for device maintenance, the condensate in the recovery and treatment vessel 1 can be vented through the vent port 4 and the vent valve 5.

[0015] Figure 1 As shown, this low-pressure saturated steam and saturated condensate recovery and treatment device is also equipped with a dual-flange level gauge 10. The dual-flange level gauge 10 measures the liquid level in the recovery and treatment vessel 1. The dual-flange level gauge 10 and the level regulating device 11 are connected in series via an automatic control instrument line for logic control. In this way, the saturated condensate level in the recovery and treatment device 1 is automatically regulated by the level regulating device 11, and the saturated condensate is recovered to the boiler water supply system, realizing continuous discharge of saturated condensate. This helps to recover the saturated condensate from the steam condensate, improves the utilization efficiency of condensate, and ensures the normal operation of the recovery and treatment device 1.

[0016] An embodiment of this utility model is as follows:

[0017] The condensate from the 1.8MPa, 300℃ steam used in the coking process is recycled in reactor 1 to recover 0.5MPa, 158℃ low-pressure saturated steam and 0.5MPa, 158℃ saturated condensate. An auxiliary electrical instrumentation system is also provided for monitoring and control.

[0018] The recycling reactor 1 is equipped with a rated pressure of 0.5 MPa and a volume of 1.2 m³. 3 The tank is made of Q345R material.

[0019] The steam condensate inlet 6 process pipeline of the recycling treatment vessel 1 is made of 20 / GB / T3087 seamless steel pipe with a diameter of 80mm and a wall thickness of 4mm.

[0020] The process pipeline of the low-pressure saturated steam outlet 7 at the top of the recycling reactor 1 is made of 20 / GB / T3087 seamless steel pipe with a diameter of 80mm and a wall thickness of 4mm. A check valve 9 is installed between the process pipes and connected to the low-pressure steam pipeline network.

[0021] The process pipe section of the top vent 2 of the recycling treatment vessel 1 is selected with a diameter of DN25 and PN10, and a safety valve 3 is installed;

[0022] The process pipeline of the bottom vent port 4 of the recycling treatment vessel 1 is made of 20 / GB / T3087 seamless steel pipe with a diameter of DN25 and a wall thickness of 4mm, and is equipped with a vent valve 5.

[0023] The process pipeline of the saturated condensate outlet 8 at the bottom of the recycling treatment vessel 1 is a 0.5MPa condensate pipe made of 20 / GB / T3087 seamless steel pipe, which is connected to the boiler water supply system, and a liquid level regulating device 11 is installed between the process pipe sections;

[0024] The dual-flange level gauge 10 and level regulating device 11 of the recycling treatment vessel 1 are controlled by automatic control logic to realize the regulation and external transmission of the saturated condensate level in the recycling treatment vessel 1.

Claims

1. A device for recovering and treating low-pressure saturated steam and saturated condensate, characterized in that: The system includes a recovery treatment vessel (1) and a liquid level regulating device (11). The recovery treatment vessel (1) is a vessel body structure with an inner cavity, and is provided with a steam condensate inlet (6), a low-pressure saturated steam outlet (7), and a saturated condensate outlet (8). The steam condensate inlet (6) is located in the middle of the recovery treatment vessel (1) and is connected to the steam condensate pipeline network. The low-pressure saturated steam outlet (7) is located at the top of the recovery treatment vessel (1), and is provided with a check valve (9) and is connected to the low-pressure steam pipeline network. The saturated condensate outlet (8) is located on the lower side of the recovery treatment vessel (1) and is connected to the inlet of the liquid level regulating device (11). The outlet of the liquid level regulating device (11) is connected to the boiler water supply system.

2. The low-pressure saturated steam and saturated condensate recovery and treatment device according to claim 1, characterized in that: The recycling treatment vessel (1) is also provided with a vent (2); the vent (2) is located at the top of the recycling treatment vessel (1), and the vent (2) is provided with a safety valve (3).

3. The low-pressure saturated steam and saturated condensate recovery and treatment device according to claim 1, characterized in that: The recycling treatment vessel (1) is also provided with a vent (4); the vent (4) is located at the bottom of the recycling treatment vessel (1), and the vent (4) is provided with a vent valve (5).

4. A low-pressure saturated steam and saturated condensate recovery and treatment device according to claim 1, 2 or 3, characterized in that: It is also equipped with a dual-flange level gauge (10); the dual-flange level gauge (10) measures the liquid level in the recovery treatment vessel (1), and the dual-flange level gauge (10) and the liquid level regulating device (11) are connected by an automatic control instrument line for logic series control.

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