Energy-saving device for reducing deaerator steam
By using condensate to heat demineralized water in the deaerator system, the problem of high steam consumption in the deaerator was solved, heat source recovery and circulating water conservation were achieved, and energy costs were reduced.
Patent Information
- Application Number
- CN202423089779.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-12-13
AI Technical Summary
In existing technologies, the feed temperature of demineralized water in deaerators is relatively low, resulting in high steam consumption and waste of both circulating water and heat source, thus increasing energy costs.
A stream of condensate is taken out before the condensate and heat medium water heat exchanger as a heat source to heat the demineralized water to 90°C before it enters the deaerator system. Through the combined design of the first heat exchanger, the second heat exchanger, the deaerator and the steam expansion tank, the heat source is recovered and the circulating water flow is reduced.
This reduced the steam consumption of the deaerator, decreased the use of circulating water, and lowered energy costs.
Smart Images
Figure CN223610100U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to energy -conserving device technical field, concretely relates to a kind of energy -conserving device for reducing deaerator steam. BACKGROUND
[0002] The statements in this section are merely provided to give background information related to the present utility model and do not necessarily constitute prior art.
[0003] The high-temperature condensed water of 50T / h about 160 DEG C of reforming device is sent to power for circulating water cooling and medium treatment after heat exchange with heat medium water, and desalted water is generated to send to each device. A large amount of circulating water (1000 square meters or more) is needed for cooling during heat medium water treatment, which not only causes a large amount of heat source waste, but also needs a large amount of circulating water for cooling, double energy waste.
[0004] Since the deaerator desalted water feed temperature is low, the desalted water temperature of the reforming device into the device is about 30 DEG C, and the deaerator steam consumption is about 4.5T / h. After heat exchange with heat medium water, the circulating water cooling is caused, the circulating water and heat source are wasted, the energy cannot be reasonably utilized, and the energy cost is increased. UTILITY MODEL CONTENTS
[0005] In view of the above problems, the utility model provides an energy -conserving device for reducing deaerator steam, which can take out a condensed water as heat source for desalted water before condensed water and heat medium water heat exchanger, and the desalted water is heated to 90 DEG C by condensed water and then enters the deaerator system. Condensed water returns to power after heat exchanger. The heat source of part of condensed water is recovered, the deaerator steam consumption is reduced, the flow of circulating water is reduced, and the energy cost is reduced.
[0006] To achieve the above object, the utility model adopts the following technical scheme:
[0007] An energy -conserving device for reducing deaerator steam, comprising a first heat exchanger, a second heat exchanger, a deaerator and a steam expander.
[0008] The first heat exchanger is connected to a first key valve, one end of the first heat exchanger is connected to one end of a third valve, the other end of the third valve is connected to one end of the second heat exchanger, the other end of the second heat exchanger is connected to one end of a first valve, and the other end of the first valve is connected to the steam expander.
[0009] The first heat exchanger is connected to one end of a second key valve, the other end of the second key valve is connected to one end of a fourth key valve, the other end of the fourth key valve is connected to one end of a third key valve, and the other end of the third key valve is connected to the first heat exchanger.
[0010] Further, one end of the third key valve and the fourth key valve connecting position is connected with the deaerator.
[0011] Further, the fourth valve is arranged on the pipeline connected with the first valve.
[0012] Further, one end of the fourth valve is connected with the first valve, and the other end of the fourth valve is connected with the steam expander.
[0013] Further, the first key valve is a condensate water inlet control valve.
[0014] Further, the second key valve is a desalted water inlet control valve.
[0015] Further, the third key valve is a desalted water outlet control valve.
[0016] Further, the fourth key valve is a normally closed valve.
[0017] Further, a branch is arranged on the pipeline connected with the first valve.
[0018] Further, a second valve is arranged on the branch.
[0019] Compared with the prior art, the utility model has the advantages and positive effects that:
[0020] The utility model discloses a first heat exchanger, a second heat exchanger, a deaerator, a steam expander and multiple key valves, can take out a condensate water as a heat source for desalted water before the condensate water and the heat medium water heat exchanger, and the desalted water is heated to 90 DEG C after passing through the condensate water and then enters the deaerator system. BRIEF DESCRIPTION OF DRAWINGS
[0021] The description and drawings of the utility model constitute a part of the utility model and are used to provide further understanding on the utility model, and the illustrative embodiment of the utility model and its description are used to explain the utility model, and do not constitute improper limitation on the utility model.
[0022] Figure 1 It is the structure diagram of the energy-saving device for reducing the deaerator steam of the utility model,
[0023] In the drawing: 1, steam expander, 2, first heat exchanger, 3, second heat exchanger, 4, deaerator, 5, first key valve, 6, second key valve, 7, third key valve, 8, fourth key valve, 9, first valve, 10, second valve, 11, third valve, 12, fourth valve. Detailed Implementation
[0024] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.
[0025] Given the low feed temperature of the deaerator (around 30℃ for the reforming unit) and the approximately 4.5T / h steam flow rate of the deaerator, the self-produced condensate (50T / h, approximately 160℃) exchanges heat with the heat transfer medium water and is then cooled by the circulating water. This results in a double waste of both the circulating water and the heat source, hindering the rational utilization of energy and increasing energy costs.
[0026] The present invention will now be described in detail with reference to the accompanying drawings. This embodiment discloses an energy-saving device for reducing deaerator steam, such as... Figure 1 As shown, it includes a first heat exchanger, a second heat exchanger, a deaerator, and a steam expansion tank.
[0027] The first heat exchanger is connected to the first key valve. One end of the first heat exchanger is connected to one end of the third valve. The other end of the third valve is connected to one end of the second heat exchanger. The other end of the second heat exchanger is connected to one end of the first valve. The other end of the first valve is connected to the steam expansion tank.
[0028] The first heat exchanger is connected to one end of the second key valve, the other end of the second key valve is connected to one end of the fourth key valve, the other end of the fourth key valve is connected to one end of the third key valve, and the other end of the third key valve is connected to the first heat exchanger.
[0029] By coordinating the first heat exchanger, second heat exchanger, deaerator, steam expansion tank, and several key valves, a portion of condensate can be extracted before the condensate-heated water heat exchanger to heat the demineralized water. The demineralized water, heated to 90°C by the condensate, then enters the deaerator system. The condensate, after passing through the heat exchanger, returns to the power source. This achieves the goal of recovering some of the condensate's heat source, reducing deaerator steam consumption, decreasing circulating water flow, and lowering energy costs.
[0030] The third and fourth critical valves are connected at one end to the deaerator. A deaerator is a device used to remove dissolved oxygen from water. It is commonly used in steam generator systems and hot water supply systems to prevent the corrosion and bubble formation effects of dissolved oxygen.
[0031] A fourth valve is installed on the pipeline connecting the steam expansion vessel and the first valve. One end of the fourth valve is connected to the first valve, and the other end of the fourth valve is connected to the steam expansion vessel.
[0032] The first key valve is a condensate inlet control valve. The second key valve is a desalted water inlet control valve. The third key valve is a desalted water outlet control valve. The fourth key valve is a normally closed valve. The desalted water enters the pipeline through the second key valve, the condensate enters the pipeline through the first key valve, and then flows out through the third key valve, realizing the recycling of the desalted water.
[0033] The first key valve 5 is a condensate to heat exchanger inlet valve, the second key valve 6 is a desalted water to heat exchanger valve, and the third key valve 7 is a desalted water out of heat exchanger valve. The fourth key valve 8 is a newly added valve in the original desalted water line, which is intended to cut off the original flow and make the desalted water pass through the heat exchanger.
[0034] A branch is arranged on the pipeline connected with the first valve of the second heat exchanger. A second valve is arranged on the branch.
[0035] The desalted water passes through the key valve, the first heat exchanger 2 (condensate and desalted water heat exchange), the third key valve 7, and then enters the deaerator 4 after passing through the regulating valve. The condensate is from the steam expander 1, the first key valve 5, the first heat exchanger 2 (condensate and desalted water heat exchange), and then returns to the second heat exchanger 3 and then to the system.
[0036] Although the specific embodiments of the utility model have been described above with reference to the drawings, it is not a limitation on the protection scope of the utility model. Those skilled in the art should understand that various modifications or changes made on the basis of the technical scheme of the utility model without creative labor are still within the protection scope of the utility model.
Claims
1. An energy saving device for reducing the steam of a deaerator, characterized by, The first heat exchanger, the second heat exchanger, the deaerator and the steam expander are included. The first heat exchanger is connected to the first key valve, one end of the first heat exchanger is connected to one end of the third valve, the other end of the third valve is connected to one end of the second heat exchanger, the other end of the second heat exchanger is connected to one end of the first valve, the other end of the first valve is connected to the steam expander. The first heat exchanger is connected to one end of the second key valve, the other end of the second key valve is connected to one end of the fourth key valve, the other end of the fourth key valve is connected to one end of the third key valve, the other end of the third key valve is connected to the first heat exchanger.
2. The energy saving device for reducing the deaerator steam of claim 1, wherein, One end of the connection position of the third key valve and the fourth key valve is connected to the deaerator.
3. The energy saving device for reducing the deaerator steam of claim 1, wherein, The fourth valve is arranged on the pipeline connected to the first valve of the steam expander.
4. The energy saving device for reducing the deaerator steam of claim 3, wherein, One end of the fourth valve is connected to the first valve, and the other end of the fourth valve is connected to the steam expander.
5. The energy saving device for reducing the deaerator steam of claim 1, wherein, The first key valve is a condensate inlet control valve.
6. The energy saving device for reducing the deaerator steam of claim 1, wherein, The second key valve is a desalted water inlet control valve.
7. The energy saving device for reducing the deaerator steam of claim 1, wherein, The third key valve is a desalted water outlet control valve.
8. The energy saving device for reducing the deaerator steam of claim 1, wherein, The fourth key valve is a normally closed valve.
9. The energy saving device for reducing the deaerator steam of claim 1, wherein, The bypass is arranged on the pipeline connected to the first valve of the second heat exchanger.
10. The energy saving device for reducing the deaerator steam as claimed in claim 9 wherein, The second valve is arranged on the bypass.