CN210242451U - Coke oven riser waste heat utilization system - Google Patents
Coke oven riser waste heat utilization system Download PDFInfo
- Publication number
- CN210242451U CN210242451U CN201920708086.1U CN201920708086U CN210242451U CN 210242451 U CN210242451 U CN 210242451U CN 201920708086 U CN201920708086 U CN 201920708086U CN 210242451 U CN210242451 U CN 210242451U
- Authority
- CN
- China
- Prior art keywords
- water
- steam
- pipeline
- communicated
- waste heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The embodiment of the utility model provides a coke oven tedge waste heat utilization system, the system includes: the coke oven ascending pipe waste heat utilization device, the forced circulation pump bypass pipeline, the ascending pipe evaporator large bypass pipeline and the reverse warm pipe bypass pipeline; through the improvement of the prior art, the problems that the existing coke oven riser waste heat utilization device generally exists, such as the problems that water cannot be filled in a pipeline before the device is started when a forced circulation pump is not put into operation, a riser evaporator is easy to damage when the pipeline is cleaned, the riser evaporator is easy to block in the operation process of the device, and water hammer can occur after the steam-water return main pipeline is restarted after production is stopped are effectively solved.
Description
Technical Field
The utility model relates to a coke oven waste heat utilization technology field especially relates to a coke oven tedge waste heat utilization system.
Background
In recent years, coke oven ascension pipe waste heat utilization devices of a plurality of domestic enterprises are put into use, and good economic benefits are obtained.
However, the existing coke oven riser waste heat utilization device generally has some problems, such as that the pipeline can not be filled with water before the forced circulation pump is not put into operation, the riser evaporator is easy to damage when the pipeline is cleaned, the riser evaporator is easy to block in the operation process of the device, and the steam-water backwater mother pipeline can generate water hammer after the restart after the production is stopped.
The problems all bring adverse effects to the coke oven riser pipe waste heat utilization device, and serious problems can affect the normal operation of the coke oven.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a coke oven tedge waste heat utilization system. The specific technical scheme is as follows:
the utility model provides a coke oven tedge waste heat utilization system, the system includes: the coke oven ascending pipe waste heat utilization device, the forced circulation pump bypass pipeline, the ascending pipe evaporator large bypass pipeline and the reverse warm pipe bypass pipeline; the coke oven ascending pipe waste heat utilization device comprises: the system comprises a desalting water tank, a deoxidizing water-feeding pump, a deaerator, a drum water-feeding pump, a drum, a forced circulation pump, a plurality of riser evaporators connected in parallel, a saturated steam pipeline and a cleaning water tank; the water outlet of the demineralized water tank is communicated with the water inlet of the deoxygenation water feeding pump through a demineralized water pipeline; the water outlet of the deoxidizing water-feeding pump is communicated with the water inlet of the deaerator through a deoxidizing water-feeding pipeline; the water outlet of the deaerator is communicated with the water inlet of the steam pocket water feeding pump through a deaerating water pipeline; the water outlet of the steam drum water feeding pump is communicated with the water feeding inlet of the steam drum through a steam drum water feeding pipeline; a steam-water supply outlet of the steam pocket is communicated with a water inlet of the forced circulation pump through a first steam-water supply mother pipeline; a water outlet of the forced circulation pump is communicated with one end of the steam-water supply distribution pipeline through a second steam-water jellyfish pipeline; the other end of the steam-water feed water distribution pipeline is communicated with a steam-water feed water inlet of the ascending pipe evaporator; a steam-water return outlet of the riser evaporator is communicated with one end of a steam-water return mother pipeline through a steam-water return water distribution pipeline; the other end of the steam-water backwater mother pipeline is communicated with a steam-water backwater inlet of the steam drum; the water outlet of the cleaning water tank is communicated with a second steam-water feeding mother pipeline through a cleaning pipeline; one end of the saturated steam pipeline is communicated with a saturated steam outlet of the steam drum, and the other end of the saturated steam pipeline is communicated with a steam pipe network; a first check valve is arranged on the saturated steam pipeline; two ends of the forced circulation pump bypass pipeline are respectively communicated with the first steam-water jellyfish pipeline and the second steam-water jellyfish pipeline; at least one flow control valve is arranged on the bypass pipeline of the forced circulation pump; two ends of the large bypass pipeline of the ascending pipe evaporator are respectively communicated with the second steam-water supply main pipeline and the steam-water return main pipeline; at least one flow control valve is arranged on the big bypass pipeline of the ascending pipe evaporator; filters are arranged at the water inlets of the deoxidizing water-feeding pump, the steam pocket water-feeding pump and the forced circulation pump and on the steam-water-feeding distribution pipeline; two ends of the reverse warm pipe bypass pipeline are respectively communicated with the water inlet and the water outlet of the first check valve; and at least one flow control valve is arranged on the reverse warm pipe bypass pipeline.
In some embodiments of the invention, the filter is a Y-filter.
In some specific embodiments of the present invention, two flow control valves are disposed on the bypass pipeline of the forced circulation pump.
In some embodiments of the present invention, two flow control valves are disposed on the large bypass pipeline of the ascending tube evaporator.
In some specific embodiments of the present invention, two flow control valves are disposed on the reverse warm pipe bypass pipeline.
In some embodiments of the present invention, a second check valve is disposed at the water outlet of the deoxygenating and water feeding pump.
In some specific embodiments of the present invention, a third check valve is disposed at the water outlet of the drum feed pump.
In some specific embodiments of the present invention, a fourth check valve is disposed at the water outlet of the forced circulation pump.
In some embodiments of the present invention, the steam inlet of the deaerator is communicated with the saturated steam pipeline through a deaerating steam pipeline.
Compared with the prior art, the utility model provides a pair of coke oven tedge waste heat utilization system has following advantage:
(1) a forced circulation pump bypass pipeline is additionally arranged between a first steam and water supply mother pipeline and a second steam and water supply mother pipeline, when the system is filled with water before starting, a flow control valve on the forced circulation pump bypass pipeline is opened, and the water is sequentially filled into the second steam and water supply mother pipeline, a steam and water supply distribution pipeline, an ascending pipe evaporator, a steam and water return distribution pipeline and the steam and water return mother pipeline from a steam pocket through the forced circulation pump bypass pipeline, so that the water filling before the starting of the system is completed when the forced circulation pump is not put into operation.
(2) By additionally arranging the large bypass pipeline of the riser evaporator between the second steam-water feeding mother pipeline and the steam-water returning mother pipeline, when a system pipeline needs to be cleaned, the flow control valve on the large bypass pipeline of the riser evaporator is opened, and the cleaning of the pipeline in the system is realized under the condition that the riser evaporator is not cleaned.
(3) The filter is additionally arranged at the water inlet of the deoxygenation water-feeding pump, the steam pocket water-feeding pump and the forced circulation pump and on the steam-water-feeding distribution pipeline, so that the iron rust and welding slag remained on the inner wall of each pipeline of the system are effectively prevented from entering the deoxygenation water-feeding pump, the steam pocket water-feeding pump, the forced circulation pump and the riser evaporator, and further, the steam-water channel of the riser evaporator is prevented from being blocked.
(4) By additionally arranging the reverse warm pipe bypass pipeline on the saturated steam pipeline, before steam and water produced by the ascending pipe evaporator are merged into the steam-water return mother pipeline again, the flow control valve on the reverse warm pipe bypass pipeline is opened, so that the steam in the steam pipe network heats the saturated water in the steam pocket, the temperatures of the first steam-water supply mother pipeline, the second steam-water supply mother pipeline, the steam-water supply and distribution pipeline and the steam-water return mother pipeline are increased, and the problem of water attack in the restarting process of the steam-water return pipeline after the shutdown is effectively solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural view of a conventional waste heat utilization apparatus for an ascending pipe of a coke oven;
FIG. 2 is a schematic structural view of a waste heat utilization system of a coke oven ascending pipe provided by the present invention;
wherein, 1-a demineralized water tank; 2-a demineralized water pipeline; 3-deoxidizing water-feeding pump; 4-a deoxygenated water supply pipeline; 5-a deaerator; 6-oxygen-removing water pipeline; 7-drum feed pump; 8-drum water supply pipe; 9-steam drum; 10-a first steam-water jellyfish pipeline; 11-forced circulation pump; 12-a second steam-water jellyfish pipeline; 13-steam water distribution pipeline; 14-a riser evaporator; 15-steam water return distribution pipeline; 16-steam-water backwater mother pipeline; 17-forced circulation pump bypass conduit; 18-a riser evaporator large bypass pipe; a 19-Y type filter; 20-saturated steam pipeline; 21-a first check valve; 22-reverse warm pipe bypass; 23-a second check valve; 24-a third check valve; 25-a fourth check valve; 26-an oxygen-scavenging steam line; 27-continuous blowdown line; 28-blowdown expander; 29-a sewage drain; 30-periodic sewage draining pipeline; 31-a warm pipe bypass duct; 32-cleaning the pipeline; 33-a cleaning water tank; 34-a drum bleeding pipeline; 35-riser evaporator bleed line.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1, a conventional coke oven riser waste heat utilization apparatus includes: the system comprises a desalted water tank 1, a deoxygenation water feeding pump 3, a deoxygenator 5, a drum water feeding pump 7, a drum 9, a forced circulation pump 11, 10 riser evaporators 14 connected in parallel, a saturated steam pipeline 20 and a cleaning water tank 33;
the water outlet of the demineralized water tank 1 is communicated with the water inlet of the deoxygenation water feed pump 3 through a demineralized water pipeline 2; the water outlet of the deoxidizing water-feeding pump 3 is communicated with the water inlet of the deaerator 5 through a deoxidizing water-feeding pipeline 4; the water outlet of the deaerator 5 is communicated with the water inlet of the steam pocket water feeding pump 7 through a deaerating water pipeline 6; the water outlet of the steam drum water feeding pump 7 is communicated with the water feeding inlet of the steam drum 9 through a steam drum water feeding pipeline 8;
a steam-water supply outlet of the steam drum 9 is communicated with a water inlet of the forced circulation pump 11 through a first steam-water supply mother pipeline 10; the water outlet of the forced circulation pump 11 is communicated with one end of a steam-water supply distribution pipeline 13 through a second steam-water supply mother pipeline 12; the other end of the steam-water feed water distribution pipeline 13 is communicated with a steam-water feed water inlet of the rising pipe evaporator 14; a steam-water return outlet of the riser evaporator 14 is communicated with one end of a steam-water return mother pipeline 16 through a steam-water return water distribution pipeline 15; the other end of the steam-water backwater mother pipeline 16 is communicated with a steam-water backwater inlet of the steam drum 9; the water outlet of the cleaning water tank 33 is communicated with the second steam-water feeding mother pipeline 12 through a cleaning pipeline 32;
one end of the saturated steam pipeline 20 is communicated with a saturated steam outlet of the steam drum 9, and the other end of the saturated steam pipeline 20 is communicated with a steam pipe network; a first check valve 21 is arranged on the saturated steam pipeline 20;
a fourth check valve 25 is further arranged at the water outlet of the forced circulation pump 11;
the steam inlet of the deaerator 5 is communicated with the saturated steam pipeline 20 through a deaerating steam pipeline 26;
a steam pocket diffusing pipeline 34 is connected with a diffusing port of the steam pocket 9; the diffusing port of the ascending tube evaporator 14 is connected with an ascending tube evaporator diffusing pipeline 35;
and flow control valves are arranged on the demineralized water pipeline 2, the deoxygenated water supply pipeline 4, the deoxygenated water pipeline 6, the steam pocket water supply pipeline 8, the first steam-water supply mother pipeline 10, the second steam-water supply mother pipeline 12, the steam-water supply and distribution pipeline 13, the steam-water return and distribution pipeline 15, the steam-water return and mother pipeline 16, the saturated steam pipeline 20, the cleaning pipeline 32, the steam pocket diffusing pipeline 34 and the riser evaporator diffusing pipeline 35.
The operation process of the existing coke oven ascending pipe waste heat utilization device is as follows: pumping the desalted water in the desalted water tank 1 into a deaerator 5 through a desalted water pipeline 2 and a deaerating water pipeline 4 by using a deaerating water feed pump 3 for deaerating, wherein steam required by the deaerator 5 comes from a saturated steam pipeline 20 of a steam drum 9; the deaerated desalted water is pressurized and sent to a steam drum 9 through a steam drum water feeding pump 7, saturated water generated in the steam drum 9 sequentially passes through a first steam-water feeding mother pipeline 10, a second steam-water feeding mother pipeline 12 and a steam-water feeding distribution pipeline 13 through a forced circulation pump 11 and enters an ascending pipe evaporator 14; saturated water absorbs heat of raw coke oven gas in the riser evaporator 14 and is converted into a steam-water mixture, and the steam-water mixture returns to the steam drum 9 after passing through a steam-water return water distribution pipeline 15 and a steam-water return mother pipeline 16; the steam-water mixture entering the steam drum 9 is divided into saturated steam and saturated water through a steam-water separator in the steam drum 9, the saturated steam is merged into a steam pipe network with the same parameters in a plant area through a saturated steam pipeline 20 or enters the deaerator 5 through a deaerating steam pipeline 26, and the saturated water is sent into the riser evaporator 14 again through the forced circulation pump 11 to carry out the next steam-water circulation.
When the forced circulation pump 11 is not put into operation, because the resistance of the forced circulation pump 11 and the resistance of the fourth check valve 25 arranged at the water outlet of the forced circulation pump are very large, the water in the steam pocket 9 is difficult to fill the second steam-water supply mother pipe 12 through the first steam-water supply mother pipe 10, and the water filling of the steam-water supply water distribution pipe 13, the riser evaporator 14, the steam-water return water distribution pipe 15 and the steam-water return mother pipe 16 before the device is started is also influenced;
after the pipeline of the existing coke oven ascending pipe waste heat utilization device is installed, opening a flow control valve installed on the cleaning pipeline 32, and cleaning the second steam-water supply jellyfish pipeline 12 and the steam-water return jellyfish pipeline 16 so as to remove impurities in the pipelines; the cleaning water flows out of the cleaning water tank 33 and flows into the second steam-water supply main pipeline 12 and the steam-water supply water distribution pipeline 13 in sequence through the cleaning pipeline 32, before entering the steam-water return main pipeline 16, the cleaning water needs to pass through the riser evaporator 14, but because the section of a steam-water flow channel of the riser evaporator 14 is small and the distance between the inner surface and the outer surface is only a few millimeters, impurities in the water can be blocked in the steam-water channel of the riser evaporator 14 in the process that the cleaning water flows through the riser evaporator 14, so that the riser evaporator 14 is deformed due to unsmooth steam-water flow in the device operation process, and further the damage of the riser evaporator 14 can be caused.
Even if all the pipes in the conventional coke oven ascension pipe waste heat utilization device are flushed before the device is put into operation, part of impurities such as rust and welding slag in the pipes still remain on the inner wall of the pipes, and the impurities enter the deaerating water feed pump 3, the drum water feed pump 7, the blades of the forced circulation pump 11 and the ascension pipe evaporator 14 along with the water flow in the pipes along with the continuous operation of the device, so that the deaerating water feed pump 3, the drum water feed pump 7, the forced circulation pump 11 and the ascension pipe evaporator 14 are damaged.
When the coke oven ascending pipe waste heat utilization device stops working due to failure, a flow control valve on a ascending pipe evaporator diffusing pipeline 35 is opened, and steam generated in an ascending pipe evaporator 14 is discharged; closing the flow control valve on the saturated steam pipeline 20 and opening the flow control valve on the drum bleeding pipeline 34; meanwhile, flow control valves on the steam-water backwater water distribution pipeline 15 and the steam-water backwater mother pipeline 16 are closed, so that the steam-water mixture produced by the riser evaporator 14 does not flow into the steam drum 9 any more; the temperature of the steam-water backwater mother pipe 16 is gradually reduced to room temperature, and the steam-water mixture staying in the steam-water backwater mother pipe 16 is gradually converted into water along with the reduction of the temperature; at this time, if the coke oven riser waste heat utilization device works again, the steam-water mixture produced by the riser evaporator 14 flows into the steam-water backwater mother pipe 16 again, and water vapor in the steam-water mixture is mixed with normal-temperature water in the steam-water backwater mother pipe 16 and then instantly condensed into water, so that local vacuum is formed in the steam-water backwater mother pipe 16, and thus the water hammer phenomenon of the steam-water backwater mother pipe 16 is caused, which greatly affects the operation safety of the device.
In order to solve the problems of the prior coke oven riser waste heat utilization device, the utility model provides a coke oven riser waste heat utilization system, as shown in figure 2, the system comprises: a coke oven ascending pipe waste heat utilization device, a forced circulation pump bypass pipeline 17, an ascending pipe evaporator large bypass pipeline 18 and a reverse warm pipe bypass pipeline 22;
the coke oven ascending pipe waste heat utilization device comprises: the system comprises a desalted water tank 1, a deoxygenation water feeding pump 3, a deoxygenator 5, a drum water feeding pump 7, a drum 9, a forced circulation pump 11, a plurality of parallel-connected ascending pipe evaporators 14, a saturated steam pipeline 20 and a cleaning water tank 33;
the water outlet of the demineralized water tank 1 is communicated with the water inlet of the deoxygenation water feed pump 3 through a demineralized water pipeline 2; the water outlet of the deoxidizing water-feeding pump 3 is communicated with the water inlet of the deaerator 5 through a deoxidizing water-feeding pipeline 4; the water outlet of the deaerator 5 is communicated with the water inlet of the steam pocket water feeding pump 7 through a deaerating water pipeline 6; the water outlet of the steam drum water feeding pump 7 is communicated with the water feeding inlet of the steam drum 9 through a steam drum water feeding pipeline 8;
a steam-water supply outlet of the steam drum 9 is communicated with a water inlet of the forced circulation pump 11 through a first steam-water supply mother pipeline 10; the water outlet of the forced circulation pump 11 is communicated with one end of a steam-water supply distribution pipeline 13 through a second steam-water supply mother pipeline 12; the other end of the steam-water feed water distribution pipeline 13 is communicated with a steam-water feed water inlet of the rising pipe evaporator 14; a steam-water return outlet of the riser evaporator 14 is communicated with one end of a steam-water return mother pipeline 16 through a steam-water return water distribution pipeline 15; the other end of the steam-water backwater mother pipeline 16 is communicated with a steam-water backwater inlet of the steam drum 9; the water outlet of the cleaning water tank 33 is communicated with the second steam-water feeding mother pipeline 12 through a cleaning pipeline 32;
one end of the saturated steam pipeline 20 is communicated with a saturated steam outlet of the steam drum 9, and the other end of the saturated steam pipeline 20 is communicated with a steam pipe network; a first check valve 21 is arranged on the saturated steam pipeline 20;
a steam pocket diffusing pipeline 34 is connected with a diffusing port of the steam pocket 9; the diffusing port of the ascending tube evaporator 14 is connected with an ascending tube evaporator diffusing pipeline 35;
and flow control valves are arranged on the demineralized water pipeline 2, the deoxygenated water supply pipeline 4, the deoxygenated water pipeline 6, the steam pocket water supply pipeline 8, the first steam-water supply mother pipeline 10, the second steam-water supply mother pipeline 12, the steam-water supply and distribution pipeline 13, the steam-water return and distribution pipeline 15, the steam-water return and mother pipeline 16, the saturated steam pipeline 20, the cleaning pipeline 32, the steam pocket diffusing pipeline 34 and the riser evaporator diffusing pipeline 35.
Two ends of the forced circulation pump bypass pipeline 17 are respectively communicated with the first steam-water jellyfish pipeline 10 and the second steam-water jellyfish pipeline 12; at least one flow control valve is arranged on the forced circulation pump bypass pipeline 17; in a specific implementation process, when the first steam-water supply mother pipeline 10, the second steam-water supply mother pipeline 12, the steam-water supply water distribution pipeline 13, the riser evaporator 14, the steam-water return water distribution pipeline 15 and the steam-water return mother pipeline 16 need to be filled with water before the system is started, a flow control valve on a forced circulation pump bypass pipeline 17 is opened, and water is sequentially filled into the second steam-water supply mother pipeline 12, the steam-water supply water distribution pipeline 13, the riser evaporator 14, the steam-water return water distribution pipeline 15 and the steam-water return mother pipeline 16 from the steam pocket 9 through the forced circulation pump bypass pipeline 17, so that the water filling before the system is started is completed when the forced circulation pump 11 is not put into operation.
Two ends of the big bypass pipeline 18 of the ascending pipe evaporator are respectively communicated with the second steam-water supply jellyfish pipeline 12 and the steam-water return jellyfish pipeline 16; at least one flow control valve is arranged on the big bypass pipeline 18 of the ascending pipe evaporator; in a specific implementation process, when the second steam-water supply mother pipe 12 and the steam-water return mother pipe 16 are cleaned, the flow control valve on the riser evaporator large bypass pipe 18 is opened, the flow control valves on the steam-water supply water distribution pipe 13 and the steam-water return water distribution pipe 15 are closed, the flow control valve on the cleaning pipe 32 is opened, cleaning water flows out of the cleaning water tank 33 and sequentially flows through the second steam-water supply mother pipe 12, the riser evaporator large bypass pipe 18 and the steam-water return mother pipe 16, so that the second steam-water supply mother pipe 12 and the steam-water return mother pipe 16 are cleaned without cleaning the riser evaporator 14, and the risk that the riser evaporator 14 is damaged in the using process is reduced.
Filters are arranged at the water inlets of the deoxidizing water-feeding pump 3, the steam pocket water-feeding pump 7 and the forced circulation pump 11 and on the steam-water-feeding distribution pipeline 13; in the specific implementation process, the filter can effectively prevent impurities such as iron rust, welding slag and the like remained on the inner wall of each pipeline of the system from entering the deoxygenation water-feeding pump 3, the steam pocket water-feeding pump 7, the forced circulation pump 11 and the ascending pipe evaporator 14, so that the blockage of a steam-water channel of the ascending pipe evaporator 14 is prevented, and the risk of damage of the equipment in the operation process is further reduced.
Two ends of the reverse warm pipe bypass pipeline 22 are respectively communicated with the water inlet and the water outlet of the first check valve 21; at least one flow control valve is arranged on the reverse warm pipe bypass pipeline 22; in a specific implementation process, when the coke oven riser waste heat utilization device works again, before the steam-water mixture produced by the riser evaporator 14 flows into the steam-water backwater mother pipeline 16 again, the flow control valve on the steam pocket diffusing pipeline 34 is closed, and the flow control valve on the riser evaporator large bypass pipeline 18 is opened; and then slowly opening the flow control valve on the reverse warm pipe bypass pipeline 22, heating the saturated steam pipeline 20 by using steam in a steam pipe network communicated with the other end of the saturated steam pipeline 20, further heating saturated water in the steam drum 9, and closing the large bypass pipeline 18 of the ascending pipe evaporator after the temperatures of the first steam water supply mother pipeline 10, the second steam water supply mother pipeline 12, the steam water supply water distribution pipeline 13, the steam water return water distribution pipeline 15 and the steam water return mother pipeline 16 are increased, so that the steam water mixture produced by the ascending pipe evaporator 14 flows into the steam water return mother pipeline 16 again, and the problem of water attack in the restarting process after the steam water return pipeline is stopped is effectively solved.
In some embodiments of the present invention, the filter is a Y-filter 19.
In some specific embodiments of the present invention, two flow control valves are disposed on the bypass pipeline 17 of the forced circulation pump.
In some embodiments of the present invention, two flow control valves are provided on the big bypass pipe 18 of the ascending pipe evaporator.
In some embodiments of the present invention, two flow control valves are disposed on the reverse warm pipe bypass pipeline 22.
In some embodiments of the present invention, a second check valve 23 is disposed at the water outlet of the oxygen-removing water-feeding pump 3.
In some embodiments of the present invention, a third check valve 24 is disposed at the water outlet of the drum feed pump 7.
In some embodiments of the present invention, a fourth check valve 25 is disposed at the water outlet of the forced circulation pump 11.
In some embodiments of the present invention, the steam inlet of the deaerator 5 is communicated with the saturated steam pipeline 20 through a deaerating steam pipeline 26.
In some embodiments of the present invention, the coke oven riser waste heat utilization device is provided with 10 parallel riser evaporators 14, the 10 parallel riser evaporators 14 are divided into two groups, and a Y-shaped filter 19 is disposed on the steam water distribution pipeline 13 of each group of 5 parallel riser evaporators 14, as shown in fig. 2.
In a specific implementation, the flow control valve is a stop valve.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (9)
1. A coke oven riser waste heat utilization system, characterized in that the system comprises: the coke oven ascending pipe waste heat utilization device, the forced circulation pump bypass pipeline, the ascending pipe evaporator large bypass pipeline and the reverse warm pipe bypass pipeline;
the coke oven ascending pipe waste heat utilization device comprises: the system comprises a desalting water tank, a deoxidizing water-feeding pump, a deaerator, a drum water-feeding pump, a drum, a forced circulation pump, a plurality of riser evaporators connected in parallel, a saturated steam pipeline and a cleaning water tank;
the water outlet of the demineralized water tank is communicated with the water inlet of the deoxygenation water feeding pump through a demineralized water pipeline; the water outlet of the deoxidizing water-feeding pump is communicated with the water inlet of the deaerator through a deoxidizing water-feeding pipeline; the water outlet of the deaerator is communicated with the water inlet of the steam pocket water feeding pump through a deaerating water pipeline; the water outlet of the steam drum water feeding pump is communicated with the water feeding inlet of the steam drum through a steam drum water feeding pipeline;
a steam-water supply outlet of the steam pocket is communicated with a water inlet of the forced circulation pump through a first steam-water supply mother pipeline; a water outlet of the forced circulation pump is communicated with one end of the steam-water supply distribution pipeline through a second steam-water jellyfish pipeline; the other end of the steam-water feed water distribution pipeline is communicated with a steam-water feed water inlet of the ascending pipe evaporator; a steam-water return outlet of the riser evaporator is communicated with one end of a steam-water return mother pipeline through a steam-water return water distribution pipeline; the other end of the steam-water backwater mother pipeline is communicated with a steam-water backwater inlet of the steam drum; the water outlet of the cleaning water tank is communicated with a second steam-water feeding mother pipeline through a cleaning pipeline;
one end of the saturated steam pipeline is communicated with a saturated steam outlet of the steam drum, and the other end of the saturated steam pipeline is communicated with a steam pipe network; a first check valve is arranged on the saturated steam pipeline;
two ends of the forced circulation pump bypass pipeline are respectively communicated with the first steam-water jellyfish pipeline and the second steam-water jellyfish pipeline; at least one flow control valve is arranged on the bypass pipeline of the forced circulation pump;
two ends of the large bypass pipeline of the ascending pipe evaporator are respectively communicated with the second steam-water supply main pipeline and the steam-water return main pipeline; at least one flow control valve is arranged on the big bypass pipeline of the ascending pipe evaporator;
filters are arranged at the water inlets of the deoxidizing water-feeding pump, the steam pocket water-feeding pump and the forced circulation pump and on the steam-water-feeding distribution pipeline;
two ends of the reverse warm pipe bypass pipeline are respectively communicated with the water inlet and the water outlet of the first check valve; and at least one flow control valve is arranged on the reverse warm pipe bypass pipeline.
2. The coke oven riser waste heat utilization system of claim 1, wherein the filter is a Y-filter.
3. The coke oven riser pipe waste heat utilization system of claim 1, wherein two flow control valves are provided on the forced circulation pump bypass line.
4. The coke oven riser waste heat utilization system of claim 1, wherein two flow control valves are provided on the riser evaporator large bypass line.
5. The coke oven riser waste heat utilization system of claim 1, wherein two flow control valves are provided on the reverse warm tube bypass line.
6. The coke oven riser waste heat utilization system of claim 1, wherein a second check valve is disposed at a water outlet of the oxygen-free feed pump.
7. The coke oven riser waste heat utilization system of claim 1, wherein a third check valve is disposed at a water outlet of the drum feed water pump.
8. The coke oven riser pipe waste heat utilization system of claim 1, wherein a fourth check valve is provided at a water outlet of the forced circulation pump.
9. The coke oven riser waste heat utilization system of claim 1, wherein the steam inlet of the deaerator is in communication with the saturated steam line via a deaerating steam line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920708086.1U CN210242451U (en) | 2019-05-17 | 2019-05-17 | Coke oven riser waste heat utilization system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920708086.1U CN210242451U (en) | 2019-05-17 | 2019-05-17 | Coke oven riser waste heat utilization system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210242451U true CN210242451U (en) | 2020-04-03 |
Family
ID=69970890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920708086.1U Active CN210242451U (en) | 2019-05-17 | 2019-05-17 | Coke oven riser waste heat utilization system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210242451U (en) |
-
2019
- 2019-05-17 CN CN201920708086.1U patent/CN210242451U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202955680U (en) | Heat utilization device of boiler blow-down water | |
| CN113404563B (en) | Low-pressure cylinder cutting heat supply unit low-heating and back-heating system | |
| CN203082865U (en) | Heating network heater drain water recovery device of supercritical heating supply set | |
| CN201724204U (en) | Condensed water recovery system | |
| CN210242451U (en) | Coke oven riser waste heat utilization system | |
| CN107223194B (en) | Blowdown deoxidization water supply system | |
| CN103693713A (en) | Condensate fine treatment high-temperature running system having heat supply and pure condensation modes | |
| CA3068559C (en) | Steam-generating unit of dual circuit reactor with purge and drain system | |
| CN203295307U (en) | High-temperature condensed water treatment device of petroleum refining industry | |
| CN202936488U (en) | Temporary pipe connecting structure for chemical cleaning system of thermal equipment | |
| CN102432080B (en) | Normal-temperature distilling sea water desalination device | |
| CN210241541U (en) | Boiler blow-off water treatment device | |
| CN112815296B (en) | Drainage exhaust steam recovery system | |
| SU775356A1 (en) | Power plant | |
| CN211119308U (en) | Steam-steam conversion system for radioactive site | |
| CN209940916U (en) | TWLJ steam turbine oil temperature and pressure compensation oil filter | |
| CN209763032U (en) | Boiler blowdown pot water zero discharge apparatus | |
| CN207050492U (en) | A kind of My heat recovery system of sewage | |
| CN206904587U (en) | Air supply system | |
| CN212057236U (en) | MTO exhaust-heat boiler blowdown economizer system | |
| CN203754468U (en) | High-temperature operation system with heat supply and straight condensation double modes for fine treatment of condensed water | |
| CN109945280B (en) | Heat pipe mode phase change heating system | |
| CN214619494U (en) | Recovery unit of boiler blow-down water resource and heat energy | |
| CN219473657U (en) | Natural gas preheating system based on exhaust-heat boiler | |
| CN213266393U (en) | Atmospheric tower desalination process system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |