CN219530822U - System for directly compressing low-pressure steam into medium-pressure steam by virtue of riser waste heat recovery - Google Patents
System for directly compressing low-pressure steam into medium-pressure steam by virtue of riser waste heat recovery Download PDFInfo
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- CN219530822U CN219530822U CN202223044653.9U CN202223044653U CN219530822U CN 219530822 U CN219530822 U CN 219530822U CN 202223044653 U CN202223044653 U CN 202223044653U CN 219530822 U CN219530822 U CN 219530822U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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Abstract
The utility model discloses a system for directly compressing low-pressure steam into medium-pressure steam by recovering waste heat of a riser, which comprises: the system comprises a desalting water tank, a deoxidizing water supply pump, a deoxidizing device, a steam drum water supply pump, a plurality of steam drums, a forced circulation pump, a heat exchanger group, a cylinder and a steam injector; the desalting water tank, the deoxidizing water supply pump, the deoxidizing device, the steam drum water supply pump, the steam drum and the forced circulation pump are sequentially communicated, and two ends of the heat exchanger group are respectively communicated with the forced circulation pump and the steam drum; the steam drum is sequentially communicated with the steam dividing cylinder and the steam ejector, and medium-pressure steam is generated at the outlet of the steam ejector. The system for directly compressing the low-pressure steam into the medium-pressure steam by the riser waste heat recovery has simple and compact structural design, compact mechanism design and relatively light weight, and can realize high-altitude installation. The utility model has low initial investment and operation cost and safe operation.
Description
Technical Field
The utility model relates to the technical field of recovery steam, in particular to a system for directly compressing low-pressure steam into medium-pressure steam by utilizing riser waste heat recovery.
Background
The precursor of steam is water, which is vaporized into steam after absorbing heat energy by a heat energy conversion device (heat exchanger). The steam is classified into wet steam, saturated steam and superheated steam according to the state. The steam generation, control, use and condensate recovery processes constitute the whole steam system, and the derived steam and condensate flow is one of the largest energy consumption points of the factory.
As a superior motive fluid thermal energy, steam has several characteristics: (1) convenient transportation: the water before entering the heat exchanger boiler is boosted by the water pump, and the steam generated after heat exchange has the same pressure, so that the steam can flow in a set pipeline completely without external power, and the steam point for each process is reached; (2) easy control: the steam is used as a power fluid, has the advantages of other compressible fluids, and reaches the using point of equipment through pressure reduction and temperature reduction, so that the operating pressure and temperature of the equipment are reduced, and the material and labor cost are indirectly saved; (3) efficient thermal energy conversion medium: compared with hot water and hot oil, the heat exchange efficiency of steam is fastest, the heat capacity of the steam is 500 times of that of water and more than 700 times of that of the hot oil, and the excellent heat capacity greatly shortens the time of heat exchange of the process, improves the production efficiency and reduces the operation cost; (4) high recovery rate: after the steam is used in the process, heat energy carried in the steam is released to become high-pressure condensed water, and the condensed water can return to a steam generating point through the pressure of the condensed water to carry out the regeneration and the utilization of the next round.
However, the application occasions of low-pressure steam are fewer and are not suitable for long-distance transportation, and certain safety risks and operation risks of process equipment exist for the application of medium-pressure steam and high-pressure steam at present, so that development of a safe low-risk equipment is needed.
Disclosure of Invention
The utility model aims to overcome the defects in the existing waste heat recovery technology, and provides a system for directly compressing low-pressure steam into medium-pressure steam by using riser waste heat recovery, which is simple in structural design and safe to use.
The utility model is realized by the following technical scheme:
a system for direct compression of low pressure steam into medium pressure steam for riser waste heat recovery, the system comprising: the system comprises a desalting water tank, a deoxidizing water supply pump, a deoxidizing device, a steam drum water supply pump, a plurality of steam drums, a forced circulation pump, a heat exchanger group, a cylinder and a steam injector; the desalting water tank, the deoxidizing water supply pump, the deoxidizing device, the steam drum water supply pump, the steam drum and the forced circulation pump are sequentially communicated, and two ends of the heat exchanger group are respectively communicated with the forced circulation pump and the steam drum; the steam drum is sequentially communicated with the steam dividing cylinder and the steam ejector, and medium-pressure steam is generated at the outlet of the steam ejector.
The system for directly compressing the low-pressure steam into the medium-pressure steam by recovering the waste heat of the riser provided by the utility model can compress the low-pressure saturated steam into the medium-pressure steam. The low pressure saturated steam is compressed to medium pressure steam mainly by a steam injector which can compress the low pressure steam to a usable higher pressure and obtain at its outlet steam of a specific pressure between the high pressure steam and the low pressure steam.
The system for directly compressing the low-pressure steam into the medium-pressure steam by the riser waste heat recovery designed by the utility model overcomes the problems that the existing waste heat recovery technology has low steam pressure, fewer low-pressure steam application occasions and more difficult application of the low-pressure steam during long-distance conveying.
Further, a system for directly compressing low-pressure steam into medium-pressure steam by riser waste heat recovery: a first regulating valve is arranged between the deoxidizing water supply pump and the deoxidizer.
Further, a system for directly compressing low-pressure steam into medium-pressure steam by riser waste heat recovery: the number of the deoxidizing water supply pumps is two, and the deoxidizing water supply pumps are one for one.
Further, a system for directly compressing low-pressure steam into medium-pressure steam by riser waste heat recovery: and a second regulating valve is arranged between the steam drum water supply pump and the steam drum.
Further, a system for directly compressing low-pressure steam into medium-pressure steam by riser waste heat recovery: the number of the steam drum water supply pumps is three, and the steam drum water supply pumps are two for standby.
Further, a system for directly compressing low-pressure steam into medium-pressure steam by riser waste heat recovery: the steam drum, the forced circulation pump and the heat exchanger group are all arranged in two groups.
Further, a system for directly compressing low-pressure steam into medium-pressure steam by riser waste heat recovery: each group of forced circulation pumps is provided with two forced circulation pumps, one for each device.
Further, a system for directly compressing low-pressure steam into medium-pressure steam by riser waste heat recovery: the heat exchanger group comprises a riser heat exchanger group and a bridge pipe heat exchanger group; and the two ends of the riser heat exchanger group and the bridge heat exchanger group are respectively communicated with the forced circulation pump and the steam drum after being arranged side by side.
Further, a system for directly compressing low-pressure steam into medium-pressure steam by riser waste heat recovery: the deaerator and the branch cylinder are provided with a communicated pipeline, and a third regulating valve is arranged on the pipeline.
Further, a system for directly compressing low-pressure steam into medium-pressure steam by riser waste heat recovery: the number of the steam ejectors is two; and an inlet of the steam injector is communicated with the branch cylinder, and an outlet of the steam injector generates medium-pressure steam.
The utility model has the beneficial effects that:
(1) The system for directly compressing the low-pressure steam into the medium-pressure steam by the riser waste heat recovery has simple and compact structural design, compact mechanism design and relatively light weight, and can realize high-altitude installation.
(2) The system for directly compressing the low-pressure steam into the medium-pressure steam by the waste heat recovery of the riser has the advantages of low initial investment and operation cost and safe operation.
(3) The system for directly compressing the low-pressure steam into the medium-pressure steam by the waste heat recovery of the riser pipe has no moving or rotating parts, is low in maintenance cost, and can be installed in a far-away or inaccessible area.
(4) The system for directly compressing the low-pressure steam into the medium-pressure steam by recovering the waste heat of the rising pipe can be used in dangerous areas without an explosion-proof motor.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a system for directly compressing low-pressure steam into medium-pressure steam by utilizing riser waste heat recovery according to the present utility model.
The marks in the figure: the system comprises a desalting water tank 1, a deoxidizing water supply pump 2, a deoxidizing device 3, a water supply pump 4, a steam drum 5, a forced circulation pump 6, a heat exchanger group 7, a split-cylinder 8, a steam injector 9, a first regulating valve 10, a second regulating valve 11, a third regulating valve 12, a rising pipe heat exchanger group 7-1 and a bridge pipe heat exchanger group 7-2.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be understood that the terms "upper," "lower," "left," "right," "top," "bottom," and the like indicate orientations or positional relationships, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may include one or more of the feature, either explicitly or implicitly. Moreover, the terms "first," "second," and the like, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein.
Example 1
As shown in fig. 1, a system for directly compressing low-pressure steam into medium-pressure steam by riser waste heat recovery, which is characterized in that the system comprises: a desalination water tank 1, an deaeration water feed pump 2 (the deaeration water feed pump 2 is arranged in two, one for standby), a deaerator 3, a steam drum water feed pump 4 (the steam drum water feed pump 4 is arranged in three, two for standby), two steam drums 5, two groups of forced circulation pumps 6 (each group of forced circulation pumps 6 is provided with two pumps, one for standby), two groups of heat exchanger groups 7 (the heat exchanger groups 7 comprise a riser heat exchanger group 7-1 and a bridge heat exchanger group 7-2 which are arranged in parallel), a steam separation cylinder 8 and a steam injector 9 (the steam injector 9 is arranged in two); the desalting water tank 1, the deoxidizing water supply pump 2, the deoxidizer 3, the steam drum water supply pump 4, the steam drum 5 and the forced circulation pump 6 are sequentially communicated, and two ends of the heat exchanger group 7 are respectively communicated with the forced circulation pump 6 and the steam drum 5; the steam drum 5 is sequentially communicated with the steam dividing cylinder 8 and the steam ejector 9, medium-pressure steam is generated at the outlet of the steam ejector 9, and then the generated medium-pressure steam is connected with a network.
The utility model relates to a use process of a system for directly compressing low-pressure steam into medium-pressure steam by recovering waste heat of a riser, which comprises the following steps: firstly, normal-temperature desalted water output by an outlet pipeline of a desalted water station enters a desalted water tank 1 of the system, then is fed into a deaerator 3 through a deaerating water supply pump 2 (for standby), deaerated water at about 104 ℃ is generated, the liquid level of the deaerator 3 is regulated through a first regulating valve 10 for controlling water inflow and a liquid level linkage, then is fed into a steam drum 5 through a steam drum water supply pump 4 (for standby), the set water level is kept through a second regulating valve 11 for controlling inlet flow and the steam drum liquid level linkage, the steam drum 5 supplies deaerated water at saturated temperature under corresponding pressure to a riser heat exchange group 7-1 and a bridge heat exchange group 7-2 through a forced circulation pump 6, and the deaerated water performs forced circulation heat exchange between the steam drum 5 and the riser heat exchange group 7-1 and the bridge heat exchange group 7-2; after heat exchange, the steam-water mixture of the rising pipe heat exchange group 7-1 and the bridge pipe heat exchange group 7-2 is led back into the steam drum 5 through a pipeline for steam-water separation, and the generated low-pressure saturated steam is sent out from the upper part of the steam drum 5 to the steam separation cylinder 8; the low-pressure steam of the sub-cylinder 8 generates medium-pressure steam through the steam injector 9, and the generated medium-pressure steam is connected with the network.
The above-described preferred embodiments of the present utility model are only for illustrating the present utility model, and are not to be construed as limiting the present utility model. Obvious changes and modifications of the utility model, which are introduced by the technical solution of the present utility model, are still within the scope of the present utility model.
Claims (9)
1. A system for direct compression of low pressure steam into medium pressure steam for riser waste heat recovery, the system comprising: the device comprises a desalting water tank (1), an deoxidizing water supply pump (2), a deoxidizer (3), a steam drum water supply pump (4), a plurality of steam drums (5), a forced circulation pump (6), a heat exchanger group (7), a branch cylinder (8) and a steam injector (9); the deaeration water supply system comprises a deaeration water tank (1), a deaeration water supply pump (2), a deaerator (3), a steam drum water supply pump (4), a steam drum (5) and a forced circulation pump (6), wherein the deaeration water supply pump, the deaerator (3), the steam drum water supply pump (4), the steam drum (5) and the forced circulation pump (6) are sequentially communicated, and two ends of the heat exchanger group (7) are respectively communicated with the forced circulation pump (6) and the steam drum (5); the steam drum (5) is sequentially communicated with the steam dividing cylinder (8) and the steam injector (9), and medium-pressure steam is generated at the outlet of the steam injector (9);
the heat exchanger group (7) comprises a riser heat exchanger group (7-1) and a bridge pipe heat exchanger group (7-2); the two ends of the ascending pipe heat exchanger group (7-1) and the bridge pipe heat exchanger group (7-2) are respectively communicated with the forced circulation pump (6) and the steam drum (5) after being arranged side by side.
2. The system for directly compressing low-pressure steam into medium-pressure steam by utilizing riser waste heat according to claim 1, wherein a first regulating valve (10) is arranged between the deoxygenated water supply pump (2) and the deoxygenator (3).
3. The system for directly compressing low-pressure steam into medium-pressure steam by utilizing riser waste heat recovery according to claim 1 or 2, wherein the number of the deoxidizing water supply pumps (2) is two, one for each.
4. The system for directly compressing low-pressure steam into medium-pressure steam by utilizing riser waste heat according to claim 1, wherein a second regulating valve (11) is arranged between the drum feed pump (4) and the drum (5).
5. The system for directly compressing low-pressure steam into medium-pressure steam by utilizing waste heat recovery of a riser pipe according to claim 1 or 4, wherein three steam drum water supply pumps (4) are arranged, and two steam drum water supply pumps are used for standby.
6. The system for directly compressing low-pressure steam into medium-pressure steam by utilizing waste heat recovery of a riser pipe according to claim 1, wherein the steam drum (5), the forced circulation pump (6) and the heat exchanger group (7) are arranged in two groups.
7. The system for directly compressing low-pressure steam into medium-pressure steam by utilizing waste heat recovery of a riser pipe according to claim 6, wherein two forced circulation pumps (6) are arranged in each group, and one forced circulation pump is used for one forced circulation pump.
8. The system for directly compressing low-pressure steam into medium-pressure steam by utilizing waste heat recovery of a riser pipe according to claim 1, wherein a pipeline communicated with the deaerator (3) and the branch cylinder (8) is arranged, and a third regulating valve (12) is arranged on the pipeline.
9. A system for direct compression of low pressure steam into medium pressure steam by riser waste heat recovery according to claim 1, wherein said steam injectors (9) are provided in two; the inlet of the steam injector (9) is communicated with the branch cylinder (8), and the outlet of the steam injector generates medium-pressure steam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223044653.9U CN219530822U (en) | 2022-11-16 | 2022-11-16 | System for directly compressing low-pressure steam into medium-pressure steam by virtue of riser waste heat recovery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223044653.9U CN219530822U (en) | 2022-11-16 | 2022-11-16 | System for directly compressing low-pressure steam into medium-pressure steam by virtue of riser waste heat recovery |
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| Publication Number | Publication Date |
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| CN219530822U true CN219530822U (en) | 2023-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202223044653.9U Active CN219530822U (en) | 2022-11-16 | 2022-11-16 | System for directly compressing low-pressure steam into medium-pressure steam by virtue of riser waste heat recovery |
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| CN (1) | CN219530822U (en) |
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- 2022-11-16 CN CN202223044653.9U patent/CN219530822U/en active Active
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