CN217686665U

CN217686665U - Belt type sintering machine flue condensing system

Info

Publication number: CN217686665U
Application number: CN202221110811.3U
Authority: CN
Inventors: 吕凌云; 孙银钱
Original assignee: Yunnan Qujing Iron And Steel Group Cheng Gang Steel Co ltd
Current assignee: Yunnan Qujing Iron And Steel Group Cheng Gang Steel Co ltd
Priority date: 2022-05-11
Filing date: 2022-05-11
Publication date: 2022-10-28
Anticipated expiration: 2032-05-11

Abstract

The utility model discloses a belt sintering machine flue condensing system, including the desulfurizing tower, flue condensing equipment and cooler, flue condensing equipment includes the casing, press from both sides cover and baffle, the baffle becomes condensation chamber and hydrops room with the inner space separation of casing, be provided with the downtake on the vertical lead in the condensation chamber, the circumference equipartition has a plurality of tedges around the downtake, the lower extreme of downtake and tedge all passes baffle and hydrops room intercommunication, the upper end of downtake is passed behind the top of casing and the tub intercommunication of discharging fume at desulfurizing tower top, be provided with on the outer wall of condensation chamber and press from both sides the cover, the upper end of tedge is bent back and is pressed from both sides the cover intercommunication, the upper portion of condensation chamber and the lower part of hydrops room are passed through the inlet intercommunication of back flow with the cooler respectively, the liquid outlet of cooler passes through the lower part intercommunication of transfer line with the condensation chamber, the lower part of cover is provided with out the tobacco pipe. The utility model discloses simple structure, flue gas condensation is effectual, can retrieve the comdenstion water, has apparent economic value and social value.

Description

Belt sintering machine flue condensing system

Technical Field

The utility model relates to a sintering flue gas handles technical field, concretely relates to belt sintering machine flue condensing system.

Background

The steel smelting is a high-energy-consumption and heavy-pollution industry, the sintering is one of the most important production process links of a steel combination enterprise, the energy consumption is high, a large amount of high-temperature harmful flue gas is generated, the sintering flue gas is an atmospheric pollutant mainly emitted by the steel enterprise and accounts for more than 50% of the total emission amount of the whole steel enterprise, and the method has great significance in desulfurization, denitrification, dust removal and purification treatment. When the flue gas is subjected to desulfurization treatment, the mainstream technology adopted in China at present is a lime-gypsum wet desulfurization technology, the flue gas desulfurized by the technology is in a saturated state or a state close to the saturated state, a large amount of water vapor generated in a desulfurizing tower can be discharged along with the flue gas, adverse effects are caused on subsequent GGH flue gas heat exchangers and denitration treatment, environmental pollution can be caused after the flue gas is discharged into the atmosphere, chimney rain or acid mist settlement phenomena are easy to generate, and therefore defogging treatment is necessary on the flue gas after desulfurization.

Before carrying out the defogging processing to the sintering flue gas after the desulfurization, in order to obtain better defogging effect, isolate the moisture that mix with in the flue gas as far as possible, often condense the flue gas before the defogging, flue gas temperature's reduction, lead to the saturation of flue gas, and produce the droplet, the accumulation of droplet, make the problem of dewing appear easily in the flue inner wall, and the flue does not possess the condensate and collects the function, in the water waste, still can cause the problem of ponding in the flue, lead to the flue to corrode, the life of flue has been shortened. Therefore, the research and development of the flue condensing system of the strand sintering machine, which has the advantages of simple structure, good flue gas condensing effect and capability of recovering condensed water, is objectively needed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a simple structure, the flue gas condensation is effectual, can retrieve the belt sintering machine flue condensing system of comdenstion water.

The utility model aims at realizing like this, including the desulfurizing tower, flue condensing equipment and cooler, flue condensing equipment includes the casing, press from both sides cover and baffle, the baffle is located the lower part in the casing, the baffle becomes condensation chamber and hydrops room with the inner space separation of casing, be provided with the downcomer on the vertical lead in the condensation chamber, the circumference equipartition has a plurality of tedders around the downcomer, the lower extreme of downcomer and tedder all passes baffle and hydrops room intercommunication, the upper end of downcomer passes behind the top of casing and the tub intercommunication of discharging fume at desulfurizing tower top, be provided with on the outer wall of condensation chamber and press from both sides the cover, the upper end of tedder is bent back and is pressed from both sides the cover intercommunication, the upper portion of condensation chamber and the lower part of hydrops room are respectively through the inlet intercommunication of back flow with the cooler, the liquid outlet of cooler passes through the lower part intercommunication of transfer line with the condensation chamber, the lower part that presss from both sides the cover is provided with a tobacco pipe.

Furthermore, a plurality of flue gas baffle plates are alternately arranged on the inner wall of the downpipe in the condensation chamber at intervals.

Furthermore, the flue gas baffling plate is obliquely arranged, the higher end of the flue gas baffling plate is connected with the inner wall of the downcomer, and the lower end of the flue gas baffling plate is arranged in a suspended mode.

Furthermore, a filter residue net is obliquely arranged on one side of the bottom in the effusion chamber, a closed water purification area is formed between the filter residue net and the shell, and the joint of the return pipe and the effusion chamber is positioned in the water purification area.

Furthermore, a clean discharge pipe is arranged between the bottom of the jacket and the upper part of the liquid accumulation chamber, and a one-way valve is arranged on the clean discharge pipe.

Furthermore, fins are arranged on the outer wall of the ascending pipe.

Furthermore, a plurality of cooling water baffle plates are alternately arranged in the condensation chamber at intervals from top to bottom.

Furthermore, a liquid level meter is arranged on the side wall of the liquid accumulation chamber.

The utility model discloses when the operation, the flue gas that the belt sintering machine produced lets in earlier the desulfurizing tower and adopts lime-gypsum wet desulfurization method to desulfurize, pass through after the desulfurization the utility model discloses carry out the flue gas condensation, use the moisture in the defroster detached flue gas after the condensation, when need carrying out condensation treatment to the flue gas, through cooler output cooling water, the cooling water passes through the lower part that the transfer line got into the condensation chamber, then upwards flow gradually, until being full of whole condensation chamber, and simultaneously, flue gas after the desulfurization gets into the downtake from the blast pipe, and flow downwards in the downtake, turn to and get into tedge after getting into the ponding chamber, flow upwards in the tedge, get into the clamp cover after reacing the upper end, discharge from the play tobacco pipe of clamp cover bottom at last, in-process, the whole in-process that the flue gas flows in downtake and tedge, all can carry out the heat transfer with the cooling water in the condensation chamber, make flue gas temperature descend, liquid drop and moisture in the flue gas will form the bigger liquid drop of volume and condense and come out, fall into under the effect of gravity and collect in the dropsy. In the utility model, the flue gas can flow in the descending pipe, the ascending pipe and the jacket in sequence, the whole stroke is longer, the heat exchange can be fully carried out with the cooling water, and the better condensation effect can be achieved; secondly, the obtained condensed water can be well collected and recycled, so that the effect of saving water resources can be achieved; additionally, the utility model discloses well each flue gas pipeline is equal vertical setting, and the liquid drop can directly drop to the hydrops after forming indoor, has avoided the problem of pipeline hydrops. The utility model discloses simple structure, flue gas condensation is effectual, can retrieve the comdenstion water, has apparent economic value and social value.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

in the figure: 1-a desulfurizing tower, 2-a cooler, 3-a shell, 4-a jacket, 5-a partition plate, 6-a condensing chamber, 7-a liquid accumulating chamber, 8-a descending pipe, 9-an ascending pipe, 10-a return pipe, 11-a liquid conveying pipe, 12-a smoke outlet pipe, 13-a smoke baffle plate, 14-a residue filtering net, 15-a cleaning pipe, 16-a fin, 17-a cooling water baffle plate and 18-a liquid level meter.

Detailed Description

The following description of the present invention is made with reference to the accompanying drawings, but the present invention is not limited thereto in any way, and any changes or improvements made based on the present invention all belong to the protection scope of the present invention.

As shown in fig. 1, the utility model discloses a desulfurizing tower 1, flue condensing equipment and cooler 2, desulfurizing tower 1 and cooler 2 are existing equipment, desulfurizing tower 1 is arranged in desorption sintering flue gas sulfur dioxide, what adopt usually is lime-gypsum wet-type desulfurization method, cooler 2 is used for reducing the temperature of water, obtain the lower cooling water of temperature, flue condensing equipment includes casing 3 and baffle 5, baffle 5 is located the lower part in casing 3, baffle 5 separates casing 3's inner space into condensation chamber 6 and hydrops room 7, be provided with downtake 8 on the vertical lead in the condensation chamber 6, circumference equipartition around downtake 8 has a plurality of teds 9, the lower extreme of downtake 8 and tedge 9 all passes baffle 5 and hydrops room 7 intercommunication, the upper end of downtake 8 passes behind the top of casing 3 with the pipe intercommunication of discharging fume at desulfurizing tower 1 top, be provided with on the outer wall of condensation chamber 6 and press from both sides cover 4, the upper end of tedge 9 is bent back and is linked together with press from both sides cover 4, the upper portion of condensation chamber 6 and the lower part of hydrops room 7 are respectively through the lower part of hydrops 10 and cooler 2 and the liquid outlet of hydrops room 11 intercommunication, the liquid outlet of cooling pipe 2 is provided with the inlet 12 of liquid pipe, the liquid pipe 11 of liquid pipe, the liquid outlet of cooling pipe is provided with the clamp cover 4 intercommunication of flue pipe 6.

The utility model discloses when the operation, flue gas that the belt sintering machine produced lets in earlier desulfurizing tower 1 adopts lime-gypsum wet desulfurization method to desulfurize, pass through after the desulfurization the utility model discloses carry out the flue gas condensation, use the moisture in the defroster detached flue gas after the condensation, when need carrying out condensation treatment to the flue gas, through 2 output cooling water of cooler, the cooling water passes through the lower part that transfer line 11 got into condensing chamber 6, then upwards flow gradually, until being full of whole condensing chamber 6, and simultaneously, flue gas after the desulfurization gets into downcomer 8 from the blast pipe, and flow downwards in downcomer 8, turn to and get into tedge 9 after getting into ponding chamber 7, flow upwards in tedge 9, get into and press from both sides cover 4 after arriving the upper end, discharge from the play tobacco pipe 12 of pressing from both sides cover 4 bottom at last, in the above-mentioned in-process, the flue gas is at the whole in-process that downcomer 8 and tedge 9 flow, all can carry out the heat transfer with the cooling water in condensing chamber 6, make flue gas temperature descend, liquid drop and moisture in the flue gas will form the bigger liquid drop and condense and come out, fall under the effect and collect ponding 7 constantly. In the utility model, the flue gas flows in the descending pipe 8, the ascending pipe 9 and the jacket 4 in sequence, the whole stroke is long, the heat exchange with the cooling water can be fully carried out, and the better condensation effect is achieved; secondly, the obtained condensed water can be well collected and recycled, so that the effect of saving water resources can be achieved; additionally, the utility model discloses well each flue gas pipeline is equal vertical setting, can directly fall in ponding chamber 6 after the liquid drop forms, has avoided the problem of pipeline hydrops.

A plurality of flue gas baffle plates 13 are alternately arranged on the inner wall of the descending pipe 8 positioned in the condensing chamber 6 at intervals, the flow path and time of flue gas in the descending pipe 8 can be prolonged through the flue gas baffle plates 13, the heat exchange efficiency between the flue gas and cooling water is improved, and the condensation efficiency of moisture in the flue gas is further improved.

The flue gas baffling board 13 slope sets up, and the higher one end of flue gas baffling board 13 is connected with the inner wall of downcomer 8, and lower one end is unsettled to be arranged, and the flue gas is at the in-process that flows downwards, and moisture and dust wherein can gather at baffling board 13, and the time is long, probably causes the jam to downcomer 8, and sets up flue gas baffling board 13 slope, and moisture and dust can follow flue gas baffling board 13 landing under the effect of gravity to prevent downcomer 8's jam.

One side slope of bottom is provided with filter residue net 14 in hydrops room 7, be formed with confined water purification district between filter residue net 14 and the casing 3, the junction of back flow 10 and hydrops room 7 is located the water purification district, moisture condenses the back from the flue gas, still can press from both sides to have the dust, impurity such as organic matter, if these dust, impurity such as organic matter gets into cooler 2, can cause the jam to cooler 2, and influence cooler 2's work efficiency, therefore, with the dust through filter residue net 14, impurity filtering such as organic matter, guarantee cooler 2 and follow-up pipeline are not blockked up.

The utility model discloses be provided with clean pipe 15 between the bottom of pressing from both sides cover 4 and the upper portion of hydrops room 7, be provided with the check valve on clean pipe 15, the utility model discloses when the operation, the flue gas can flow in pressing from both sides cover 4 top-down, still can with the cooling water heat transfer in the condensation chamber 6 at the flow in-process, still can produce certain comdenstion water, these comdenstion underwater lags behind can gather these hydrops accessible clean pipe 15 in the bottom of pressing from both sides cover 4 and discharge into hydrops room 7, and the effect of check valve is, only allows hydrops or flue gas to flow to hydrops room 7 one side from pressing from both sides cover 4 one side, and does not allow the flue gas to flow to pressing from both sides cover 4 from hydrops room 7.

The outer wall of the ascending pipe 9 is provided with fins 16, and the fins 16 can increase the heat exchange area between the flue gas and the cooling water, so that the condensation efficiency of the flue gas is improved.

A plurality of cooling water baffle plates 17 are alternately arranged in the condensation chamber 6 at intervals up and down, and the arrangement of the cooling water baffle plates 17 can increase the stroke of cooling water in the condensation chamber 6, increase the heat exchange time of the cooling water and the flue gas and improve the condensation efficiency of the flue gas.

Be provided with level gauge 18 on the lateral wall of hydrops room 7, level gauge 18 is existing equipment for the hydrops liquid level height in the hydrops room 7 of real-time display is convenient for in time discharge the hydrops.

Claims

1. The flue condensing system of the belt type sintering machine comprises a desulfurization tower (1), a flue condensing device and a cooler (2), and is characterized in that the flue condensing device comprises a shell (3) and a partition plate (5), the partition plate (5) is positioned at the lower part in the shell (3), the partition plate (5) divides the inner space of the shell (3) into a condensing chamber (6) and a liquid accumulation chamber (7), a descending pipe (8) is arranged on a vertical line in the condensing chamber (6), a plurality of ascending pipes (9) are uniformly distributed on the periphery of the descending pipe (8), the lower ends of the descending pipe (8) and the ascending pipes (9) penetrate through the partition plate (5) and are communicated with the liquid accumulation chamber (7), the upper end of the descending pipe (8) penetrates through the top of the shell (3) and is communicated with a smoke exhaust pipe at the top of the desulfurization tower (1), the outer wall of the condensing chamber (6) is provided with a jacket (4) after being bent, the upper end of the ascending pipe (9) is communicated with the jacket (4), the upper part of the condensing chamber (6) and the lower part of the liquid accumulation chamber (7) are respectively communicated with a liquid outlet (2) of the cooler (2) through a liquid inlet (11) of a liquid pipe (6), and a liquid outlet (12) of a liquid pipe cooler (6).

2. The flue condensing system of a strand sintering machine according to claim 1, characterized in that a plurality of flue gas baffles (13) are alternately arranged at intervals on the inner wall of the downcomer (8) inside the condensing chamber (6).

3. The flue condensing system of the strand sintering machine according to claim 2, wherein the flue gas baffle plate (13) is disposed obliquely, the higher end of the flue gas baffle plate (13) is connected with the inner wall of the downcomer (8), and the lower end is arranged in a suspended manner.

4. The flue condensing system of the strand sintering machine according to claim 1, wherein a strainer (14) is obliquely arranged on one side of the bottom in the liquid accumulation chamber (7), a closed water purification area is formed between the strainer (14) and the housing (3), and the connection between the return pipe (10) and the liquid accumulation chamber (7) is located in the water purification area.

5. The flue condensing system of the strand sintering machine according to claim 1, wherein a drain pipe (15) is arranged between the bottom of the jacket (4) and the upper part of the liquid accumulation chamber (7), and a check valve is arranged on the drain pipe (15).

6. The flue condensing system of a strand sintering machine according to claim 1, characterized in that fins (16) are provided on the outer wall of the rising pipe (9).

7. The flue condensing system of the strand sintering machine according to claim 1, wherein a plurality of cooling water baffles (17) are alternately arranged in the condensing chamber (6) at intervals from top to bottom.

8. The flue condensing system of a strand sintering machine according to claim 1, characterized in that a level meter (18) is arranged on the side wall of the liquid accumulation chamber (7).