CN114317849A - Water control equipment for blast furnace gas - Google Patents
Water control equipment for blast furnace gas Download PDFInfo
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- CN114317849A CN114317849A CN202111423605.8A CN202111423605A CN114317849A CN 114317849 A CN114317849 A CN 114317849A CN 202111423605 A CN202111423605 A CN 202111423605A CN 114317849 A CN114317849 A CN 114317849A
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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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
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Abstract
The invention discloses water control equipment for blast furnace gas, which comprises a cooling unit, a first water removal unit and a second water removal unit which are sequentially connected, wherein the cooling unit is provided with a gas inlet and a cooled gas outlet, the first water removal unit is provided with a cooled gas inlet, a first water removal gas outlet and a first water outlet, and the second water removal unit is provided with a first water inlet, a second water removal gas outlet and a second water outlet. The blast furnace gas is treated by adopting the water control equipment, the blast furnace gas firstly enters the cooling unit, is cooled and then enters the first water removal unit for continuous and efficient dehydration, and the water containing the gas obtained by removal periodically enters the second water removal unit for further gas-liquid separation, so that the gas leakage can be avoided. In addition, the water control equipment is easy to integrate with the front-end process tank body, has compact and attractive structure and small occupied space, and can not increase resistance for the whole operation of the system.
Description
Technical Field
The invention relates to the field of chemical industry, in particular to water control equipment for blast furnace gas.
Background
The domestic blast furnace gas desulfurization work is in the starting stage, and most of various technical processes are exploring the verification period. Taking a hydrolysis catalysis and dry absorption process as an example, in the early laboratory test and the later engineering application verification, it is found that if too much blast furnace gas liquid free water is not controlled, the hydrolysis catalyst and the dry desulfurizing agent in a gas desulfurization process device are obviously affected, most of the prior art has no targeted measures, and a small part of systems with problems are supplemented with a mechanical water removal device later. However, the following problems exist because the design is not overall and is not designed specifically:
1. the dewatering performance of the dewatering equipment is poor;
2. the occupied area of the equipment is large;
3. active control and expandable control cannot be realized;
4. the drainage structure is unreasonable, and has coal gas leakage risk and great potential safety hazard.
In view of the above, there is still a need for an improved water control apparatus for blast furnace gas.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
In one aspect of the invention, a water control apparatus for blast furnace gas is presented. According to an embodiment of the invention, the water control equipment comprises a cooling unit, a first water removal unit and a second water removal unit which are connected in sequence; the cooling unit is provided with a coal gas inlet and a cooled coal gas outlet; the first water removal unit is provided with a cooled coal gas inlet, a first water removal coal gas outlet and a first water outlet, and the cooled coal gas inlet is connected with the cooled coal gas outlet; the second water removal unit is provided with a first water inlet, a second water removal coal gas outlet and a second water outlet, and the first water inlet is connected with the first water outlet.
The blast furnace gas is treated by adopting the water control equipment, the blast furnace gas firstly enters the cooling unit, is cooled and then enters the first water removal unit for continuous and efficient dehydration, and the water containing the gas obtained by removal periodically enters the second water removal unit for further gas-liquid separation, so that the gas leakage can be avoided. In addition, the water control equipment is easy to integrate with the front-end process tank body, has compact and attractive structure and small occupied space, and can not increase resistance for the whole operation of the system.
In addition, the water control apparatus for blast furnace gas according to the above embodiment of the present invention may also have the following additional technical features:
in some embodiments of the invention, the cooling unit comprises an air cooling device, and the air cooling device is a variable frequency cooling fan.
In some embodiments of the invention, the cooling unit comprises a water cooling device which is a shell-and-tube water cooling device, a coil-and-tube water cooling device or a shell-and-tube water cooling device.
In some embodiments of the invention, the first water removal unit comprises a spin-drying tray.
In some embodiments of the invention, the spin tray is a plate-type spin-drying tray, a cartridge-type spin-drying tray, or a baffled spin-drying tray.
In some embodiments of the invention, the second water removal unit comprises a gas-liquid separation device, which is a gravity gas-liquid separation device, a mechanical centrifugal gas-liquid separation device, or a cyclonic centrifugal gas-liquid separation device.
In some embodiments of the invention, the second water removal unit further has a pressure relief port.
In some embodiments of the invention, the water control apparatus further comprises: and the pretreatment unit is arranged at the front end of the cooling unit and is connected with the coal gas inlet.
In some embodiments of the invention, the pretreatment unit comprises at least one of a filtration tank, a protectant tank, a surge tank, a dust removal apparatus, a dechlorination apparatus.
In some embodiments of the invention, the water control apparatus further comprises: and the heating unit is connected with the first water-removed coal gas outlet.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural view of a water control apparatus for blast furnace gas according to an embodiment of the present invention.
Reference numerals:
10-a cooling unit for cooling the liquid,
20-a first water removal unit, 21-a first water outlet,
30-a second water removal unit, 31-a first water inlet, 32-a second water-removed coal gas outlet, 33-a second water outlet, 34-a pressure release port,
40-heating unit.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings and are only for convenience in describing the present invention and simplifying the description, but are not intended to indicate or imply that the indicated devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
The inventor finds that the water control process of the existing blast furnace gas desulfurization system does not have corresponding special supporting equipment in the research of the existing blast furnace gas water control process, if the existing gas-liquid separation equipment on other occasions is only directly used, the treatment capacity is limited, water can be removed only but not controlled, the coexistence integration level is low, the automation degree is low, and the like, and the market demand can not be met. The solution provided by the invention can meet the water control process index required by the desulfurization process of the gas desulfurization system, has the advantages of controllable water content width, high integration level, high automation degree, safety, reliability and the like, plays a key role in the blast furnace gas desulfurization system, embodies great economic value, and can be expanded to other use scenes with similar requirements.
In one aspect of the invention, a water control apparatus for blast furnace gas is presented. Referring to fig. 1, the water control apparatus includes a cooling unit 10, a first water removal unit 20, and a second water removal unit 30, which are connected in sequence, according to an embodiment of the present invention. Specifically, the cooling unit 10 has a gas inlet and a cooled gas outlet; the first water removal unit 20 is provided with a cooled coal gas inlet, a first water removed coal gas outlet and a first water outlet 21, and the cooled coal gas inlet is connected with the cooled coal gas outlet; the second water removal unit 30 has a first water inlet 31, a second water-removed coal gas outlet 32, and a second water outlet 33, and the first water inlet 31 is connected to the first water outlet 21.
A water control apparatus for blast furnace gas according to an embodiment of the present invention is further described in detail below.
According to some embodiments of the present invention, the cooling unit 10 includes an air cooling device, which is a variable frequency cooling fan, that is, the blast furnace gas is cooled by air cooling. Therefore, the linear adjustment of the cooling temperature can be realized, and the saturation temperature of the coal gas can be controlled. According to further embodiments of the present invention, the cooling unit 20 may also comprise a water cooling device, i.e. the blast furnace gas is cooled by water cooling. Specifically, the water cooling device may be a shell-and-tube water cooling device, a coil-and-tube water cooling device, or a shell-and-tube water cooling device.
According to some embodiments of the invention, the first water removal unit 20 comprises a spin-drying tray. Thereby, continuous and high-efficiency dehydration of the blast furnace gas can be ensured. In some embodiments, the cyclone dewatering plate is a variable centrifugal dewatering plate, and the variable centrifugal dewatering plate can adjust the spiral angle of the dewatering plate according to the size of the gas flow, so that the gas-liquid mixture is in an efficient flow velocity range at any time, and higher centrifugal dewatering efficiency is ensured. In addition, in some embodiments, the angles of the diversion trench and the gas outlet pipe on the tank wall of the first water removal unit 20 are designed to ensure that the removed liquid water does not secondarily entrain the dehydrated gas.
According to some embodiments of the present invention, the cyclone tray may be a plate-type cyclone dewatering tray, a drum-type cyclone dewatering tray, or a baffled cyclone dewatering tray.
According to some embodiments of the present invention, the second water removal unit 30 includes a gas-liquid separation device, which is a gravity type gas-liquid separation device, a mechanical centrifugal gas-liquid separation device, or a cyclone centrifugal gas-liquid separation device. Therefore, the gas separation effect of the gas-containing water can be further improved, and the water separated in the second water removal unit 30 can be discharged.
According to some embodiments of the invention, the second water removal unit 30 also has a pressure relief port 34. Therefore, the pressure in the second water removal unit 30 can be further balanced, and gas leakage is avoided.
In some embodiments of the present invention, each inlet and outlet of the second water removal unit 30 is electrically controlled, and can be automatically started and stopped according to the actual operation state of the system.
In addition, the water control apparatus of the present invention may further include: a pre-processing unit (not shown in the drawings). The pretreatment unit is arranged at the front end of the cooling unit and is connected with the coal gas inlet. The specific type of the pretreatment unit is not particularly limited, and may be selected according to the specific needs of the process. According to some embodiments of the invention, the pre-treatment unit may comprise at least one of a filtration tank, a protectant tank, a surge tank, a dust removal apparatus, a dechlorination apparatus.
According to some embodiments of the invention, the water control apparatus of the invention further comprises: a heating unit 40. The heating unit 40 is connected to the first water-removed gas outlet of the first water-removing unit 20. Therefore, the coal gas obtained by the separation of the first water removal unit 20 can be heated to meet the requirements of other processes in the later stage on the temperature of the coal gas. Specifically, the heating unit 40 may be an explosion-proof electric heater or a steam heater.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (9)
1. A water control device for blast furnace gas is characterized by comprising a cooling unit, a first water removal unit and a second water removal unit which are sequentially connected;
the cooling unit is provided with a coal gas inlet and a cooled coal gas outlet;
the first water removal unit is provided with a cooled coal gas inlet, a first water removal coal gas outlet and a first water outlet, and the cooled coal gas inlet is connected with the cooled coal gas outlet;
the second water removal unit is provided with a first water inlet, a second water removal coal gas outlet and a second water outlet, and the first water inlet is connected with the first water outlet.
2. The water control apparatus of claim 1, wherein the cooling unit comprises an air cooling device, the air cooling device being a variable frequency cooling fan.
3. The water control apparatus of claim 1, wherein the cooling unit comprises a water cooling device, the water cooling device being a shell and tube water cooling device, a coil water cooling device, or a shell water cooling device.
4. The water control apparatus of claim 1, wherein the first water removal unit comprises a spin-drying tray.
5. The water control apparatus of claim 4, wherein the spin tray is a plate-type spin-drying tray, a cartridge-type spin-drying tray, or a baffled spin-drying tray.
6. The water control apparatus of claim 1, wherein the second water removal unit comprises a gas-liquid separation device, the gas-liquid separation device being a gravity gas-liquid separation device, a mechanical centrifugal gas-liquid separation device, or a cyclonic centrifugal gas-liquid separation device.
7. The water control apparatus of claim 1 wherein the second water removal unit further has a pressure relief port.
8. The water control apparatus of claim 1, further comprising: and the pretreatment unit is arranged at the front end of the cooling unit and is connected with the coal gas inlet.
9. The water control apparatus of claim 8, wherein the pre-treatment unit comprises at least one of a filtration tank, a protectant tank, a surge tank, a dust removal apparatus, a dechlorination apparatus.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111423605.8A CN114317849B (en) | 2021-11-26 | 2021-11-26 | Water control equipment for blast furnace gas |
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| CN202111423605.8A CN114317849B (en) | 2021-11-26 | 2021-11-26 | Water control equipment for blast furnace gas |
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| CN114317849A true CN114317849A (en) | 2022-04-12 |
| CN114317849B CN114317849B (en) | 2023-03-17 |
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