CN217698596U - Hydrogen chloride falling film absorption tower - Google Patents
Hydrogen chloride falling film absorption tower Download PDFInfo
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- CN217698596U CN217698596U CN202220844660.8U CN202220844660U CN217698596U CN 217698596 U CN217698596 U CN 217698596U CN 202220844660 U CN202220844660 U CN 202220844660U CN 217698596 U CN217698596 U CN 217698596U
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- film absorption
- hydrogen chloride
- water inlet
- falling film
- spray
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Abstract
The utility model discloses a hydrogen chloride falling liquid film absorption tower, including falling liquid film absorption tower body, tower body outer wall from the top down has set gradually gas outlet, first layer water inlet, total water inlet, second spray water inlet, air inlet, delivery port, discharge gate spray, tower body inner wall from the top down has set gradually defroster, first vaporific shower nozzle, liquid distributor, backup pad, falling liquid film absorption tube, the vaporific shower nozzle of second, packing layer, the utility model discloses a falling liquid film absorption tube, packing layer, vaporific shower nozzle, defroster carry out the effective absorption to the hydrogen chloride flue gas respectively, have improved the absorption efficiency of single falling liquid film absorption tower hydrogen chloride greatly, reduce and drop into practical cost, have still reduced the emission of tail gas simultaneously, and not only the environmental protection but also high efficiency.
Description
Technical Field
The utility model relates to a cash registering machine technical field, concretely relates to hydrogen chloride falling liquid film absorption tower.
Background
The absorption tower is a device for realizing absorption operation, and is divided into three types according to the gas-liquid phase contact state, wherein the first type is a plate tower, a bubbling absorption tower and a stirring bubbling absorption tower, and gas is dispersed in a liquid phase in a bubble state; the second type is an ejector, a venturi, a spray tower in which liquid is dispersed in a gas phase in the form of droplets; the third type is a packing absorption tower and a falling film absorption tower in which liquid moves in a film shape and contacts with a gas phase, the flow modes of the gas phase and the liquid phase in the tower can be countercurrent or cocurrent, countercurrent operation is usually adopted, an absorbent is added from the top of the tower and flows from top to bottom, the absorbent contacts with gas flowing from bottom to top, the liquid absorbing the absorbent is discharged from the bottom of the tower, and the purified gas is discharged from the top of the tower. However, most of the existing hydrochloric acid production adopts falling film absorption tower equipment, although the falling film absorption tower is low in price and good in absorption effect, due to the structural particularity of the falling film absorption tower, gas to be absorbed almost passes through the tower body without obstruction, and therefore, the most common falling film absorption tower on the market is a three-stage falling film absorption tower, namely three tower bodies are connected in series for use, so that the tail gas absorption efficiency is improved, the overflow is reduced, the byproduct amount is improved, however, not only is the equipment purchase capital doubled, the equipment operation and maintenance cost is increased, but also the occupied area is increased, and the cost is not saved. Therefore, a more efficient and economical falling film absorption tower is needed to solve this problem.
SUMMERY OF THE UTILITY MODEL
The utility model provides a hydrogen chloride falling film absorption tower for solving the problems.
The utility model adopts the following technical scheme:
the utility model provides a hydrogen chloride falling liquid film absorption tower, includes falling liquid film absorption tower body, tower body outer wall from the top down sets gradually the gas outlet, first spray layer water inlet, total water inlet, second spray water inlet, air inlet, delivery port, discharge gate, tower body inner wall from the top down has set gradually defroster, first vaporific shower nozzle, liquid distributor, backup pad, falling liquid film absorption tube, second vaporific shower nozzle, packing layer, gas outlet department is provided with the hydrogen chloride detector, total water inlet department is connected with the pipeline, and pipe connection liquid distributor sets up the master valve on the pipeline, first spray layer water inlet, second spray layer water inlet department are connected with first spray line, second spray line respectively, first spray line, second spray line are located the tower body the inside and are connected with first vaporific shower nozzle, second vaporific shower nozzle respectively, and first spray line, second spray line are located the tower body outside and are provided with first valve, second valve respectively.
As an optimized technical proposal of the utility model, the falling film absorption tube is a tube array type graphite heat exchange tube.
As an optimal technical scheme of the utility model, the equidistance is provided with the fixed orifices above the backup pad, falling liquid film absorption tube fixes on the fixed orifices, and falling liquid film absorption tube top is connected to the liquid distributor, the backup pad is all around with tower body inner wall laminating fastening connection.
As the utility model discloses an optimal technical scheme, the packing layer includes filter screen frame and filler material, filler material is filled in filter screen frame, and filler material from the top down has set gradually sand bed, saw-dust layer, sponge layer.
The beneficial effects of the utility model are that: the hydrogen chloride flue gas gets into the tower body the inside from the air inlet, partly passes and passes the packing layer and is dissolved and absorb, partly is by first, the second sprays the layer and sprays the absorption, partly is absorbed through falling liquid film absorption tube inner wall water film, through these several steps, the absorption area of hydrogen chloride flue gas has been increased, the absorption efficiency of hydrogen chloride has been improved, in addition the establishment of defroster can prevent again that the hydrogen chloride aerial fog from getting into the process of going down, so relapse, the hydrogen chloride flue gas is dissolved and absorbed in manifold cycles, the qualified emission of hydrogen chloride flue gas just can be realized to single falling liquid film absorption tower, do not need many absorption towers to use simultaneously, the input cost is reduced, the process has been simplified, work efficiency is improved, not only high-efficient but also environmental protection.
Drawings
Fig. 1 is a front view of a falling film absorption tower of the present invention;
fig. 2 is a top view of the support plate of the present invention;
FIG. 3 is a structural diagram of the packing layer of the present invention;
the symbols in the drawings illustrate that:
1: tower body, 2: hydrogen chloride detector, 3: gas outlet, 4: total water inlet, 5: second spray layer water inlet, 6: air inlet, 7: a water outlet, 8: discharge port, 9: demister, 10: liquid distributor, 11: support plate, 111: fixing hole, 12: falling film absorber tube, 13: first mist head, 14: first valve, 15: first spray layer water inlet, 16: filler layer, 161: wood chip layer, 162: sand layer, 163: sponge layer, 17 second mist spray, 18: second valve, 19: a main valve.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings.
In the embodiments, it should be understood that the terms "middle", "upper", "lower", "top", "bottom", "right", "left", "above", "below", "back", "front", "middle", "outside", "inside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the embodiments, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the embodiments.
As shown in fig. 1 to 3, the outer wall of the tower body 1 sequentially includes an air outlet 3, a first spray layer water inlet 15, a total water inlet 4, a second spray water inlet 5, an air inlet 6, a water outlet 7 and a discharge port 8 from top to bottom, a demister 9, a first mist spray head 13, a liquid distributor 10, a support plate 11, a falling film absorption tube 12, a second mist spray head 17 and a packing layer 16 are sequentially disposed on the inner wall of the tower body 1 from top to bottom, the air outlet 3 is provided with a hydrogen chloride detector 2, the total water inlet 4 is connected with a pipeline, the pipeline is connected with the liquid distributor 10, a total valve 19 is disposed on the pipeline, the first spray layer water inlet 15 and the second spray layer water inlet 5 are respectively connected with a first spray pipeline and a second spray pipeline, the first spray pipeline and the second spray pipeline are located inside the tower body 1 and respectively connected with the first mist spray head 13 and the second mist spray head 17, and the first spray pipeline and the second spray pipeline are located outside the tower body 1 and respectively provided with a first valve 14 and a second valve 18.
The specific process is as follows: the main valve 19 on the pipeline of the main water inlet 4 is opened, water enters the liquid distributor 10, the water in the liquid distributor 10 uniformly flows down through the inner wall of the falling film absorption tube 12 to reach the packing layer 16, wood chips, sand and sponge in the packing layer 16 have good water absorption, so that the packing layer 16 is in a wet environment for a long time, at the moment, hydrogen chloride flue gas enters the bottom of the tower body 1 from the air inlet 6, the hydrogen chloride flue gas floats upwards and passes through the packing layer 16, because the hydrogen chloride gas is very soluble in water, a part of the hydrogen chloride flue gas can be dissolved and absorbed by the wet packing layer 16, a part of the hydrogen chloride flue gas floats between the pipelines of the falling film absorption tube 12, at the moment, the valve 18 on the second spray pipeline at the water inlet 5 of the second spray layer is opened, the floating part of the hydrogen chloride gas is dissolved by the water sprayed by the second spray nozzle 17, and finally the rest of the hydrogen chloride flue gas flows upwards through the channel of the falling film absorption tube 12 to be dissolved in the water film on the inner wall of the falling film absorption tube 12, and then flows down along the inner wall of the falling film absorption tube 12, and finally drops on the packing layer 16, and finally, and the packing layer 16 drops on the bottom of the tower; at this time, part of the hydrogen chloride flue gas passes through the falling film absorption pipe 12 and the liquid distributor 10 and reaches the lower part of the demister 9, at this time, the valve 14 on the first spray pipeline at the water inlet 15 of the first spray layer is opened, water sprayed by the first mist spray nozzle 13 secondarily sprays the hydrogen chloride gas, the hydrogen chloride gas is absorbed again, the rest part of the hydrogen chloride gas finally reaches the demister 9 at the top, the blades are arranged in the structure of the demister 9 at equal intervals, a flue gas channel is called between the two blades, when the rest part of the hydrogen chloride flue gas passes through the bent channel part at a certain speed, the hydrogen chloride flue gas is forced to rapidly and continuously change the running direction of the hydrogen chloride flue gas, mist drops in the hydrogen chloride flue gas are thrown onto the blades of the demister 9 under the action of inertia and centrifugal force, the accumulation amount of the mist drops on the blades is increased along with the passing of the hydrogen chloride flue gas, the mist drops dissolved in the hydrogen chloride gas are converged into mist drops, the mist drops move downwards under the action of gravity, so that the hydrogen chloride gas formed after meeting the water spray is removed from the falling film absorption pipe, the tail gas enters the tail gas, the tail gas is prevented from entering the tail gas after the acid mist absorption process, the tail gas passes through the circulating detection, and the hydrogen chloride absorption tower, and the hydrogen chloride absorption process, and the hydrogen chloride absorption efficiency is greatly improved, and the hydrogen chloride absorption efficiency is greatly.
Further, the falling film absorption tube 12 is a tube type graphite heat exchange tube, and the graphite heat exchange tube has the advantages of high temperature resistance, thermal shock resistance, difficulty in scaling on the surface, no pollution, good machining performance and light weight.
Further, the equidistance is provided with fixed orifices 111 above the backup pad 11, falling film absorption tube 12 passes fixed orifices 111, and falling film absorption tube 12 tops are connected to liquid distributor 10, backup pad 11 is all around with 1 inner wall laminating fastening connection of tower body, and the hydrogen chloride flue gas can freely pass falling film absorption tube 12 and liquid distributor 10.
Further, the packing layer 16 includes filter screen frame and filler material, the filler material is filled in the filter screen frame, filler material from the top down has set gradually sand bed 161, saw-dust layer 162, sponge layer 163, and the sand adopts fine sand, and sand water-holding capacity is more lasting, and the saw-dust particle diameter is great than the sand, and saw-dust and sponge have strong hydroscopicity, and this just enables the packing layer and is in moist state for a long time to be difficult to reveal, increased packing layer 16's life, preliminary filtration absorption has good effect to the hydrogen chloride flue gas.
Finally, it should be noted that: these embodiments are merely illustrative of the present invention and do not limit the scope of the present invention. In addition, other variations and modifications will be apparent to persons skilled in the art based on the foregoing description. This need not be, nor should it be exhaustive of all embodiments. And obvious changes and modifications may be made without departing from the scope of the present invention.
Claims (4)
1. The utility model provides a hydrogen chloride falling film absorption tower, includes falling film absorption tower body (1), its characterized in that: the tower body (1) outer wall from the top down sets gradually gas outlet (3), first spray layer water inlet (15), total water inlet (4), second spray layer water inlet (5), air inlet (6), delivery port (7), discharge gate (8), tower body (1) inner wall from the top down has set gradually defroster (9), first vaporific shower nozzle (13), liquid distributor (10), backup pad (11), falling liquid film absorption tube (12), second vaporific shower nozzle (17), packing layer (16), gas outlet (3) department is provided with hydrogen chloride detector (2), total water inlet (4) department is connected with the pipeline, pipe connection liquid distributor (10), set up total valve (19) on the pipeline, first spray layer water inlet (15), second spray layer water inlet (5) punishment do not are connected with first spray pipe way, second spray pipe way, first spray pipe way, second spray pipe way are located tower body (1) the inside and are connected with first vaporific shower nozzle (13), second spray pipe (17) respectively, and first spray pipe way, second spray pipe way are located tower body (1) outside and are provided with first vaporific shower nozzle (18), second valve door respectively.
2. A hydrogen chloride falling film absorption tower according to claim 1, wherein: the falling film absorption tube (12) is a tube type graphite heat exchange tube.
3. A hydrogen chloride falling film absorption tower according to claim 1, characterized in that: the equidistance is provided with fixed orifices (111) above backup pad (11), falling film absorption tube (12) are fixed on fixed orifices (111), and falling film absorption tube (12) top is connected to liquid distributor (10), backup pad (11) are all around with tower body (1) inner wall laminating fastening connection.
4. A hydrogen chloride falling film absorption tower according to claim 1, characterized in that: the packing layer (16) comprises a filter screen frame and a filling material, wherein the filling material is filled in the filter screen frame, and the filling material is sequentially provided with a sand layer (161), a sawdust layer (162) and a sponge layer (163) from top to bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220844660.8U CN217698596U (en) | 2022-04-12 | 2022-04-12 | Hydrogen chloride falling film absorption tower |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220844660.8U CN217698596U (en) | 2022-04-12 | 2022-04-12 | Hydrogen chloride falling film absorption tower |
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| Publication Number | Publication Date |
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| CN217698596U true CN217698596U (en) | 2022-11-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220844660.8U Active CN217698596U (en) | 2022-04-12 | 2022-04-12 | Hydrogen chloride falling film absorption tower |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117695832A (en) * | 2024-02-05 | 2024-03-15 | 沧州奇宝农业科技发展有限公司 | Blending reaction flue gas spray tank |
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2022
- 2022-04-12 CN CN202220844660.8U patent/CN217698596U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117695832A (en) * | 2024-02-05 | 2024-03-15 | 沧州奇宝农业科技发展有限公司 | Blending reaction flue gas spray tank |
| CN117695832B (en) * | 2024-02-05 | 2024-04-30 | 沧州奇宝农业科技发展有限公司 | Blending reaction flue gas spray tank |
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