CN105861078A - Tower bottom drainage and water seal device of shaft furnace gas scrubber - Google Patents
Tower bottom drainage and water seal device of shaft furnace gas scrubber Download PDFInfo
- Publication number
- CN105861078A CN105861078A CN201610365103.7A CN201610365103A CN105861078A CN 105861078 A CN105861078 A CN 105861078A CN 201610365103 A CN201610365103 A CN 201610365103A CN 105861078 A CN105861078 A CN 105861078A
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- CN
- China
- Prior art keywords
- water seal
- tower
- river
- drain pipe
- shaped
- 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.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/08—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors
- C10K1/10—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids
- C10K1/101—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids with water only
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/02—Dust removal
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K13/00—Other constructional types of cut-off apparatus; Arrangements for cutting-off
- F16K13/08—Arrangements for cutting-off not used
- F16K13/10—Arrangements for cutting-off not used by means of liquid or granular medium
Abstract
The invention discloses a tower bottom drainage and water seal device of a shaft furnace gas scrubber. The device comprises a fixed neck Venturi tube and a hollow scrubbing tower connected with the fixed neck Venturi tube, the bottom of the hollow scrubbing tower is provided with a cone-shaped tower bottom, the upper end of the tower bottom is provided with a first water outlet which is connected with a first U-shaped water seal, the first U-shaped water seal is connected with a first exhaust dispersing pipe and a second exhaust dispersing pipe respectively, the top of the first U-shaped water seal is communicated with a first drain pipe, the lower end of the tower bottom is provided with a second water outlet which is connected with a second U-shaped water seal, the second U-shaped water seal is provided with a third exhaust dispersing pipe, and the top of the second U-shaped water seal is communicated with a second drain pipe. According to the tower bottom drainage and water seal device of the shaft furnace gas scrubber, by means of a three-stage drainage outlet arrangement mode, gas scrubbing water with different dust contents is discharged respectively, and the problems that outlets and pipelines of gas scrubbing water equipment are prone to silt sinking and blocking are effectively solved.
Description
Technical field
The present invention relates to draining and water seal arrangement at the bottom of the tower of shaft furnace gas washer, belong to shaft furnace gas washer field.
Background technology
Shaft furnace coal gas enters the temperature 380 of scrubber～600 DEG C, and pressure 51～65Kpa, impurity is mainly dust, content～11.4g/Nm3；After entering scrubber, sprayed by roll tube shower nozzle, enter Venturi tube, from Venturi tube bottom coal gas out and the direct counter current contacting of a large amount of shower waters, major part dust is removed after scrubbed cooling, subsequently entering dehydration device, then draw from scrubber's upper pipe, the water that condenses in shower water and coal gas falls into the bottom vertebral body of scrubber.Treated purified gas dust content reduces to 50mg/Nm3Hereinafter, gas temperature reduces to 40～50 DEG C, and pressure reduces to 35～58KPa, delivers to next technique user；The water of the bottom vertebral body of scrubber is delivered to water treatment system and is purified Posterior circle use.
In above-mentioned technological process, gas pressure is 35～58KPa, and coal gas belongs to the gas that Class A is explosive, poisonous, flammable, can be partially soluble in water, during the washings dispatch of the bottom vertebral body of scrubber, common water seal arrangement, easily occurs that coal gas goes here and there leakage from water, causes safety problem；And containing a large amount of impurity in washings, easily cause the obstructing problem of pipeline and equipment.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the present invention provides draining and water seal arrangement at the bottom of the tower of a kind of shaft furnace gas washer, it is possible to solve to get rid of washings pipeline obstruction, prevent the series of problems such as gas leak, effective venting of dust explosion.
Technical scheme: for solving above-mentioned technical problem, draining and water seal arrangement at the bottom of the tower of a kind of shaft furnace gas washer of the present invention, including determine neck Venturi tube and with determine the hollow scrubbing tower that neck Venturi tube is connected, the bottom of described hollow scrubbing tower is provided with at the bottom of the tower of cone-shaped, upper end at the bottom of described tower is provided with the first row mouth of a river, the water seal U-shaped with the first of U-shape of the first row mouth of a river is connected, the sealing-liquid duct of the first U-shaped water seal is provided with first exhaust exhaust stack, the water seal outlet top of the first U-shaped water seal is provided with second exhaust exhaust stack, aerofluxus exhaust stack can drain into 2 meters of more than the top of the highest equipment the coal gas parsed from washings respectively, prevent the coal gas parsed from washings from entering downstream washings processing system, there is carbon monoxide poisoning, the danger of blast；The top of described first U-shaped water seal and first row cross current, lower end at the bottom of described tower is provided with the second row mouth of a river, the water seal U-shaped with the second of U-shape of the second row mouth of a river is connected, and the water seal outlet of the second U-shaped water seal is provided with the 3rd aerofluxus exhaust stack, the top of the second U-shaped water seal and second row cross current.
As preferably, it is provided with overflow plate between the described first row mouth of a river and the second row mouth of a river, overflow plate is heterotype steel plate, is arranged close to side, the first row mouth of a river, and the washings at the bottom of tower are separated into Two Areas, most washings are after overflow, entering side, the first row mouth of a river to discharge, owing to second row mouth of a river caliber is little, in tower, water spray is the biggest, water level in overflow plate keeps constant, it is ensured that the height identical with overflow plate of the water level in overflow plate at the bottom of tower；Impurity in water is heavy ion dust mud contaning, and during washings overflow, major part dirt mud has stayed the region outside overflow plate, and such overflow plate is just divided into different concentration ranges washings.
As preferably, the bottom at the bottom of described tower connects with the 3rd drain pipe, is sequentially provided with clean-up port and fast opening/closing valve on the 3rd drain pipe.
As preferably, the bottom at the bottom of described tower is provided with the 4th drain pipe, and the 4th drain pipe connects with precipitation vessel, and the 4th drain pipe is positioned at the top sinking to the bottom container, connects with the 5th drain pipe at the top of precipitation vessel.
As preferably, described 5th drain pipe is provided with the flow valve controlling uninterrupted.
As preferably, the cone angle at the bottom of described tower is 30 °.
In the present invention, the washings dustiness that the first row mouth of a river is discharged is 749ppmw, the first row mouth of a river is connected with the first U-tube water seal of U-shape, the height of the horizontal tube of U-tube water seal water outlet is slightly below the discrepancy in elevation bottom the overflow plate at the bottom of tower, the horizontal tube of U-tube water seal water outlet and U-tube more than the operation pressure in scrubbing tower；The second exhaust exhaust stack that described first U-shaped water seal exports top with the first exhaust exhaust stack being positioned at sealing-liquid duct and water seal respectively is connected, what first, second aerofluxus exhaust stack gave off is the coal gas resolved from washings, ensure the safety of downstream washings treatment process, the outlet top of described first U-shaped water seal simultaneously with first row cross current；Lower end at the bottom of described tower is provided with the second row mouth of a river, and the washings dustiness of discharge is 7000ppmw, the top of described second U-shaped water seal and second row cross current；Bottommost at the bottom of described tower is provided with the 3rd discharge outlet, and the washings dustiness of discharge is 9800ppmw.
In the present invention, gas washer is the structure that vertical Venturi tube is integrated with hollow scrubbing tower, bottom sets tapered comprehensive without dead angle outlet, coal gas enters from Venturi portion entrance, send from lower hollow scrubbing tower top exit, hollow scrubbing tower bottom cone arranges safety water seal device, and water seal height is more than gas pressure.Coal-gas Washing Water Using centralized collection containing dust is to hollow scrubbing tower bottom cone, and dust is because of gravitational settling effect, and maximum in the bottom concentration of scrubbing tower cone, the bottom of cone arranges a discharge outlet, and leaves clean-up port on drain pipe；Drain pipe arranges fast opening/closing valve, more at washings dust-laden, unlatching when discharging smooth, and such scrubber thoroughly solves the most long-pending problem become silted up, block in bottom；Bottom gas washer, vertebral body side arranges overflow plate, it is ensured that in tower, liquid level is in certain safe altitude, washings is separated by concentration simultaneously；Arranging a discharge outlet in overflow area, the washings of overflow are discharged from discharge outlet, and this portion of washing water dust content is relatively low；Arranging U-shaped water seal on drainage pipeline, water seal height meets safety requirements, respectively sets an aerofluxus diffusion mouth before and after U-shaped water seal, and diffusion mouth causes safe altitude, makes the gas safety of release from washings discharge.Bottom gas washer, vertebral body lower side arranges a discharge outlet, and discharge is the washings more containing dust, and bottom scrubber, vertebral body angle is set to 30 °, it is ensured that dust-laden washings do not produce alluvial in vertebral body bottom；Arranging U-shaped water seal on drainage pipeline, water seal height meets safety requirements, respectively sets an aerofluxus diffusion mouth after U-shaped water seal, and diffusion mouth causes safe altitude.
The present invention can make shaft furnace coal gas from temperature 380～600 DEG C, pressure 51～65Kpa, dust content～11.4g/Nm3, after washing, temperature reduces to 40～50 DEG C, and pressure is reduced to～35KPa, and dust content reduces to 50mg/Nm3Below；And solve gas washer and be prone to long-pending silt, blocking and water seal safety problem；Additionally, drainage system arranges 3 discharge outlet by the dust content of washings, respectively enter different water treatment process, reduce the load of water processing establishment, play the effect of energy-conserving and environment-protective.
Beneficial effect: draining and water seal arrangement at the bottom of the tower of the shaft furnace gas washer of the present invention, three grades of discharge outlet set-up modes, discharge the Coal-gas Washing Water Using of different dust content respectively, efficiently solve the outlet of gas washing wetting system and the problems such as long-pending silt, blocking easily occurs in pipeline；Drainage pipeline uses effective water seal height, it is ensured that the coal gas in scrubber will not overflow from drainage pipeline, it is ensured that the safe and environment-friendly problem of gas washer；Arranging exhaust outlet on drainage pipeline in place, make oligodynamical coal gas in washings when discharging gas, draw safely from exhaust stack, eliminate the risk factor such as gas explosion, poisoning, exhaust outlet height is arranged on safe altitude.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Detailed description of the invention
As shown in Figure 1, draining and water seal arrangement at the bottom of the tower of a kind of shaft furnace gas washer of the present invention, including determine neck Venturi tube 1 and with determine the hollow scrubbing tower 2 that neck Venturi tube 1 is connected, the bottom of described hollow scrubbing tower 2 is provided with at the bottom of the tower of cone-shaped, upper end at the bottom of described tower is provided with the first row mouth of a river 4, the first row mouth of a river 4 water seal U-shaped with the first of U-shape is connected, first U-shaped water seal first exhaust exhaust stack 9 respectively and second exhaust exhaust stack 10 connect, the top of described first U-shaped water seal and first row cross current, lower end at the bottom of described tower is provided with the second row mouth of a river 5, the second row mouth of a river 5 water seal U-shaped with the second of U-shape is connected, second U-shaped water seal is provided with the 3rd aerofluxus exhaust stack 11, the top of the second U-shaped water seal and second row cross current.
In the present invention, it is provided with overflow plate 3 between the described first row mouth of a river 4 and the second row mouth of a river 5.Bottom at the bottom of described tower connects with the 3rd drain pipe 6, is sequentially provided with clean-up port 7 and fast opening/closing valve 8 on the 3rd drain pipe 6.Bottom at the bottom of described tower is provided with the 4th drain pipe, and the 4th drain pipe connects with precipitation vessel, and the 4th drain pipe is positioned at the top sinking to the bottom container, connects with the 5th drain pipe at the top of precipitation vessel.The flow valve controlling uninterrupted is installed on described 5th drain pipe.Cone angle at the bottom of described tower is 30 °.
The present invention is from shaft furnace coal gas out, temperature 380～600 DEG C, pressure 51～65Kpa, dust content～11.4g/Nm3, initially enter, high speed flows through when determining neck Venturi tube 1 aditus laryngis, after coal gas is tentatively lowered the temperature and removed the grit of a large amount of more than 1 micron, entering, coal gas is lowered the temperature further, is removed little granule grit, coal gas, after spiral board dehydrator is dehydrated, is sent from hollow scrubbing tower 2 top exit；The washings determining neck Venturi tube 1 and hollow scrubbing tower 2 fall into wash tower bottoms vertebral body；Overflow plate 3 blocks portion of washing water, the height of guarantee washings at the bottom of tower, it is stored in the water of overflow area, by the first row mouth of a river 4 continuously, in a large number, quickly discharge, arranging U-shaped water seal on the first row mouth of a river 4, water seal height meets safety requirements, respectively sets a first exhaust exhaust stack 9 and second exhaust exhaust stack 10 before and after U-shaped water seal, diffusion mouth causes safe altitude, makes the gas safety of release from washings discharge；The washings that wash tower bottoms dust-laden is higher, low discharge continuous by the second row mouth of a river 5 is discharged, and drainage pipeline arranges U-shaped water seal, and water seal height meets safety requirements, sets a 3rd aerofluxus exhaust stack 11 after U-shaped water seal.When dustiness is bigger, when the second row mouth of a river 5 impeded drainage or a scrubbing tower washed water liquid level high position, open fast opening/closing valve 8, make the washings that bottom scrubbing tower vertebral body, dust content is higher be discharged by the 3rd drain pipe 6, when scrubbing tower washed water liquid level is normal, close fast opening/closing valve 8；In abnormal cases, it is also possible to cleared up the long-pending silt at the 3rd position, 6 times mouths of a river of drain pipe by clean-up port 7, thus can ensure that draining and the water seal safety problem of gas washer.
The above is only the preferred embodiment of the present invention; it is noted that, for those skilled in the art; under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (6)
1. draining and water seal arrangement at the bottom of the tower of shaft furnace gas washer, including determining neck Venturi tube and being connected with determining neck Venturi tube
Hollow scrubbing tower, it is characterised in that: the bottom of described hollow scrubbing tower is provided with at the bottom of the tower of cone-shaped, upper at the bottom of described tower
End is provided with the first row mouth of a river, and the water seal U-shaped with the first of U-shape of the first row mouth of a river is connected, the water seal of the first U-shaped water seal
Entrance is provided with first exhaust exhaust stack, and the water seal of the first U-shaped water seal outlet top is provided with second exhaust exhaust stack, and described the
The top of one U-shaped water seal and first row cross current, the lower end at the bottom of described tower is provided with the second row mouth of a river, the second row mouth of a river with
Second U-shaped water seal of U-shape connects, and the water seal outlet of the second U-shaped water seal is provided with the 3rd aerofluxus exhaust stack, the 2nd U
The top of type water seal and second row cross current.
Draining and water seal arrangement at the bottom of the tower of shaft furnace gas washer the most according to claim 1, it is characterised in that:
Being provided with overflow plate between the described first row mouth of a river and the second row mouth of a river, overflow plate is heterotype steel plate, is arranged close to first row
Side, the mouth of a river, and the washings at the bottom of tower are separated into two regions.
Draining and water seal arrangement at the bottom of the tower of shaft furnace gas washer the most according to claim 1, it is characterised in that:
Bottom at the bottom of described tower connects with the 3rd drain pipe, is sequentially provided with clean-up port and fast opening/closing valve on the 3rd drain pipe.
Draining and water seal arrangement at the bottom of the tower of shaft furnace gas washer the most according to claim 1, it is characterised in that:
Bottom at the bottom of described tower is provided with the 4th drain pipe, and the 4th drain pipe connects with precipitation vessel, and the 4th drain pipe is positioned at and sinks to the bottom appearance
The top of device, connects with the 5th drain pipe at the top of precipitation vessel.
Draining and water seal arrangement at the bottom of the tower of shaft furnace gas washer the most according to claim 4, it is characterised in that:
The flow valve controlling uninterrupted is installed on described 5th drain pipe.
Draining and water seal arrangement at the bottom of the tower of shaft furnace gas washer the most according to claim 1, it is characterised in that:
Cone angle at the bottom of described tower is 30 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610365103.7A CN105861078B (en) | 2016-05-27 | 2016-05-27 | A kind of bottom of tower draining of shaft furnace gas washer and water seal arrangement |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610365103.7A CN105861078B (en) | 2016-05-27 | 2016-05-27 | A kind of bottom of tower draining of shaft furnace gas washer and water seal arrangement |
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| Publication Number | Publication Date |
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| CN105861078A true CN105861078A (en) | 2016-08-17 |
| CN105861078B CN105861078B (en) | 2018-08-24 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110763040A (en) * | 2019-12-02 | 2020-02-07 | 中冶焦耐(大连)工程技术有限公司 | Quench tower with water seal tank and working method thereof |
| CN113025396A (en) * | 2021-03-10 | 2021-06-25 | 中冶华天工程技术有限公司 | Liquid supply and drainage system of novel blast furnace gas desulfurization tower and operation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110763040A (en) * | 2019-12-02 | 2020-02-07 | 中冶焦耐(大连)工程技术有限公司 | Quench tower with water seal tank and working method thereof |
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| CN113025396A (en) * | 2021-03-10 | 2021-06-25 | 中冶华天工程技术有限公司 | Liquid supply and drainage system of novel blast furnace gas desulfurization tower and operation method |
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| Publication number | Publication date |
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| CN105861078B (en) | 2018-08-24 |
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