CN210674296U - Open calcium type brine preheating equipment - Google Patents

Abstract

The utility model provides an open calcium type brine preheating device, which comprises a primary preheating device, a secondary preheating device and a settler, wherein the primary preheating device and the secondary preheating device both comprise a heat exchanger (tubular heat exchanger) and a storage chamber, the bottom of the heat exchanger is connected with an upper flow guide pipe lower segment through a flange, one end of the upper flow guide pipe lower segment is connected with a lower flow guide pipe cross section, one end of the lower flow guide pipe cross section is connected with a bed charge propeller (suspended ground of the bed charge propeller as a free end of expansion and contraction) through a flange, the other end of the lower flow guide pipe cross section is fixedly connected with a lower flow guide pipe, one side of the bottom of the lower flow guide pipe is provided with a feed pipe opening and a feed back pipe opening, the top of the lower flow guide pipe is fixedly connected with the storage chamber, the top of the storage chamber is fixedly connected with the upper flow guide, can work continuously and effectively improve the effective production time.

Description

Open calcium type brine preheating equipment

Technical Field

The utility model relates to a heat transfer technique and crystallization technique application field specifically are an open calcium type brine preheating device.

Background

In the related industries of evaporation concentration and preheating requirements before evaporation crystallization of calcium sulfate-containing solutions (or calcium sulfate-containing aqueous solutions) in the salt manufacturing industry, the petrochemical industry, the metallurgical industry, the coal chemical industry, the wastewater treatment industry and the like, during the preheating production of the calcium sulfate-containing solutions (or the calcium sulfate-containing aqueous solutions), preheating devices such as plate preheaters, traditional tube-pass preheaters, disc preheaters and the like are used, and when the devices are preheated, calcium sulfate crystals can be separated out along with the increase of temperature, the wall or the heat exchange surface is bonded, the heat transfer coefficient is reduced or the channel is blocked, the continuous operation cannot be realized, and the effective production time is seriously influenced; or a plurality of sets of devices are used alternately, so that the investment is increased, the cleaning is frequent (generally, the cleaning is needed within 6 hours), the medicament consumption is high, the equipment maintenance amount is large, and a large amount of waste water is generated.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing an open calcium type brine preheating device to solve the problem that proposes in the above-mentioned background art, the utility model relates to a rationally, can continuous operation, effective production time of effectual improvement.

In order to achieve the above purpose, the present invention is realized by the following technical solution: an open calcium type brine preheating device comprises a primary preheating device, a secondary preheating device and a settler, wherein the primary preheating device and the secondary preheating device both comprise a heat exchanger and a storage chamber, the bottom of the heat exchanger is fixedly connected with an upper guide pipe lower section, one end of the upper guide pipe lower section is connected with a lower guide pipe transverse section, one end of the lower guide pipe transverse section is connected with a bed charge propeller through a flange, the other end of the lower guide pipe transverse section is fixedly connected with a lower guide pipe, one side of the bottom of the lower guide pipe is provided with a feeding pipe opening and a feed back pipe opening, the top of the lower guide pipe is fixedly connected with the storage chamber, the top of the storage chamber is fixedly connected with an upper guide pipe transverse section, the top of the upper guide pipe transverse section is provided with a discharge opening, one end of the upper guide pipe transverse section is fixedly connected with an upper guide pipe section, the bottom of the upper, the both sides at heat exchanger top are provided with exhaust hole and high temperature comdenstion water import respectively, one side of heat exchanger bottom is provided with the comdenstion water export, the high temperature comdenstion water import on the one-level preheating device passes through the comdenstion water exit linkage on pipeline and the second grade preheating device, the last discharge gate of one-level preheating device passes through the pipeline and is connected with the feed pipe mouth on the second grade preheating device, the bottom of settler is provided with the thick liquids export, and the input of thick liquids pump passes through pipeline and thick liquids exit linkage, the output of thick liquids pump passes through the pipeline and is connected with the feed back mouth on one-level preheating device and the second.

As an optimal mode of the utility model, the blowdown mouth of pipe is installed to the bottom of honeycomb duct horizontal segment down, be connected with the washing water pipe mouth on the blowdown mouth of pipe.

As an optimized mode of the utility model, the upper part of the transverse section of the upper flow guide pipe is provided with an exhaust pipe opening.

As an optimized mode of the utility model, one side of heat exchanger top and bottom all is provided with the maintenance manhole.

The utility model has the advantages that: the utility model discloses an open calcium type brine preheating device, including heat exchanger, storage compartment, go up the honeycomb duct hypomere, honeycomb duct cross section, bed charge propeller, honeycomb duct, feed pipe mouth of pipe, feed back mouth of pipe, go up honeycomb duct cross section, discharge gate, go up the honeycomb duct upper segment, exhaust hole, high temperature comdenstion water import, overhaul manhole, blowdown mouth of pipe, wash pipe mouth of pipe, exhaust mouth of pipe, one-level preheating device, second grade preheating device, settler, comdenstion water export and thick liquids pump down.

1. This open calcium type brine pre-heating equipment has set up the bed charge propeller, under bed charge propeller power effect, can form high-speed fluid and erode, makes calcium sulfate crystal form in liquid and hangs to can effectually avoid bonding on heat exchange tube and honeycomb duct and on the wall, avoid reducing heat transfer coefficient or jam pipeline, can reach continuous operation's purpose, effectual improvement effective production time.

2. This open calcium type brine preheats equipment no longer need many sets of device alternate use to can reduce cost, and can effectual reduction cleaning frequency, practice thrift human cost and water resource, the medicament consumption is few, and the equipment maintenance volume is little.

3. Compared with the traditional preheating equipment, the open calcium type brine preheating equipment can effectively improve the preheating efficiency and reduce the preheating cost.

Drawings

Fig. 1 is a schematic structural view of a primary preheating device of the open calcium-type brine preheating device of the present invention;

fig. 2 is a schematic structural view of the open calcium-type brine preheating device of the present invention;

in the figure: 1-heat exchanger, 2-material storage chamber, 3-upper draft tube lower section, 4-lower draft tube transverse section, 5-bed charge propeller, 6-lower draft tube, 7-feeding tube opening, 8-feed back tube opening, 9-upper draft tube transverse section, 10-discharge opening, 11-upper draft tube upper section, 12-exhaust hole, 13-high temperature condensed water inlet, 14-inspection manhole, 15-sewage discharge tube opening, 16-flushing water tube opening, 17-exhaust tube opening, 18-primary preheating device, 19-secondary preheating device, 20-settler, 21-condensed water outlet, 22-slurry pump and 23-slurry outlet.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

Referring to fig. 1 to 2, the present invention provides a technical solution: an open calcium type brine preheating device comprises a primary preheating device 18, a secondary preheating device 19 and a settler 20, wherein the primary preheating device 18 and the secondary preheating device 19 both comprise a heat exchanger 1 and a storage chamber 2, the bottom of the heat exchanger 1 is connected with an upper honeycomb duct lower section 3 through a flange, one end of the upper honeycomb duct lower section 3 is connected with a lower honeycomb duct transverse section 4, one end of the lower honeycomb duct transverse section 4 is connected with a bottom material propeller 5 through a flange, the other end of the lower honeycomb duct transverse section 4 is fixedly connected with a lower honeycomb duct 6, one side of the bottom of the lower honeycomb duct 6 is provided with a feed pipe opening 7 and a feed back pipe opening 8, the top of the lower honeycomb duct 6 is fixedly connected with the storage chamber 2, the top of the storage chamber 2 is fixedly connected with an upper honeycomb duct transverse section 9, the top of the upper honeycomb duct transverse section 9 is provided with a discharge port 10, one end of the upper honeycomb duct transverse section 9, go up honeycomb duct upper segment 11's bottom and heat exchanger 1's top through flange joint, the both sides at heat exchanger 1 top are provided with exhaust hole 12 and high temperature comdenstion water import 13 respectively, one side of heat exchanger 1 bottom is provided with comdenstion water export 21, high temperature comdenstion water import 13 on the one-level preheating device 18 passes through the pipeline and is connected with comdenstion water export 21 on the second grade preheating device 19, discharge gate 10 on the one-level preheating device 18 passes through the pipeline and is connected with feed pipe mouth 7 on the second grade preheating device 19, the bottom of settler 20 is provided with thick liquids export 23, and the input of thick liquids pump 22 passes through the pipeline and is connected with thick liquids export 23, the output of thick liquids pump 22 passes through the pipeline and is connected with feed back mouth 8 on one-level preheating device 18 and.

As an optimal mode of the utility model, the blowdown mouth of pipe 15 is installed to the bottom of honeycomb duct horizontal segment 4 down, be connected with the sparge water mouth of pipe 16 on the blowdown mouth of pipe 15.

As an optimized mode of the present invention, the upper portion of the upper flow guiding pipe cross section 9 is provided with an exhaust pipe opening 17.

As a preferred mode of the present invention, the top and the bottom of the heat exchanger 1 are provided with an inspection manhole 14.

The working principle is as follows: pumping calcium sulfate-containing aqueous solution (or calcium sulfate-containing aqueous solution) and gypsum slurry at the bottom of a settler 20 from a feeding pipe opening 7 at the lower part of a lower flow guide pipe 6, mixing the slurry with the circulating slurry of the lower flow guide pipe 6 to form calcium sulfate crystal-containing slurry, carrying out heat exchange on the calcium sulfate crystal-containing slurry through a heat exchanger 1, transferring heat released by high-temperature materials (high-temperature condensed water, steam and the like) outside the heat exchanger 1 to the calcium sulfate crystal-containing slurry through the heat exchanger 1 so as to heat the calcium sulfate crystal-containing slurry to achieve the preheating purpose, carrying out heat exchange on the calcium sulfate crystal-containing slurry to heat the slurry from low temperature to 45-80 ℃, carrying out saturated crystallization on calcium sulfate in liquid due to inverse solubility property and leading growth on the calcium sulfate crystal, flushing with high-speed (1.5-2.5m/s) fluid under the power action of a backing material propeller 5, and forming suspension of the calcium sulfate crystal in, avoid being adhered on the heat exchanger 1, the draft tube and the wall of the draft tube, and during the rising process of the slurry containing the calcium sulfate crystals at high speed on the upper section 11 of the draft tube, on one side, the supersaturation degree is eliminated in rising, 11 highest places on the honeycomb duct reach, most get into storage compartment 2 and participate in next circulation, the minority flows out from discharge gate 10 and gets into the feedstock pipe mouth 7 of second grade preheating device 19 under 5 power of bed charge propeller and supplied charge effect, storage compartment 2 is located honeycomb duct horizontal segment 9 and lower honeycomb duct 6's junction, the effect is 5 material sources of assurance bed charge propeller are stable, avoid appearing bed charge propeller 5 blade department feed liquid not enough and vibrations, the thick liquids of the calcium sulfate crystal that flows out from 19 discharge gates 10 of second grade preheating device get into settler 20, 20 upper portion overflow clear liquids of settler get into next process, settler bottom gypsum thick liquids divide two parts through slurry pump 22: one part of the brine returns to the feed back pipe orifices 8 on the primary preheating device 18 and the secondary preheating device 19 to supplement the content of calcium sulfate crystals in the slurry, the slurry plays a role of seed crystals and participates in preheating circulation, the other part of the brine is discharged to a filtering process and is discharged, the open type calcium type brine preheating equipment is provided with a backing material propeller 5, and under the power action of the backing material propeller 5, high-speed fluid scouring can be formed to enable the calcium sulfate crystals to be suspended in liquid, so that the brine can be effectively prevented from being adhered to the heat exchanger 1, a flow guide pipe and a wall of the brine pipe, the heat transfer coefficient is prevented from being reduced or a pipeline is prevented from being blocked, the purpose of continuous work can be achieved, the effective production time is effectively improved, the open type calcium type brine preheating equipment does not need to be alternately used by a plurality of devices, the cost can be reduced, the cleaning frequency, the equipment maintenance volume is little, and this open calcium type brine preheats equipment can effectual improvement preheat the efficiency for traditional preheating equipment, reduces the cost of preheating.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (4)

1. The open type calcium type brine preheating equipment comprises a first-stage preheating device (18), a second-stage preheating device (19) and a settler (20), and is characterized in that the first-stage preheating device (18) and the second-stage preheating device (19) both comprise a heat exchanger (1) and a storage chamber (2), the bottom of the heat exchanger (1) is fixedly connected with an upper honeycomb duct lower section (3), one end of the upper honeycomb duct lower section (3) is connected with a lower honeycomb duct transverse section (4), one end of the lower honeycomb duct transverse section (4) is connected with a backing material propeller (5) through a flange, the other end of the lower honeycomb duct transverse section (4) is fixedly connected with a lower honeycomb duct (6), one side of the bottom of the lower honeycomb duct (6) is provided with a feeding pipe orifice (7) and a return pipe orifice (8), and the top of the lower honeycomb duct (6) is fixedly connected with the storage chamber, the top of the storage chamber (2) is fixedly connected with an upper guide pipe transverse section (9), the top of the upper guide pipe transverse section (9) is provided with a discharge port (10), one end of the upper guide pipe transverse section (9) is fixedly connected with an upper guide pipe upper section (11), the bottom of the upper guide pipe upper section (11) is connected with the top of the heat exchanger (1) through a flange, two sides of the top of the heat exchanger (1) are respectively provided with an exhaust hole (12) and a high-temperature condensed water inlet (13), one side of the bottom of the heat exchanger (1) is provided with a condensed water outlet (21), the high-temperature condensed water inlet (13) on the primary preheating device (18) is connected with the condensed water outlet (21) on the secondary preheating device (19) through a pipeline, the discharge port (10) on the primary preheating device (18) is connected with a feeding pipe opening (7) on the secondary, the bottom of the settler (20) is provided with a slurry outlet (23), the input end of a slurry pump (22) is connected with the slurry outlet (23) through a pipeline, and the output end of the slurry pump (22) is respectively connected with a feed back pipe opening (8) on the primary preheating device (18) and the secondary preheating device (19) through pipelines.

2. The open calcium-based brine preheating device of claim 1, wherein: and a sewage discharge pipe orifice (15) is installed at the bottom of the lower guide pipe transverse section (4), and a flushing water pipe orifice (16) is connected to the sewage discharge pipe orifice (15).

3. The open calcium-based brine preheating device of claim 1, wherein: and an exhaust pipe orifice (17) is arranged at the upper part of the upper guide pipe transverse section (9).

4. The open calcium-based brine preheating device of claim 1, wherein: and one sides of the top and the bottom of the heat exchanger (1) are provided with an inspection manhole (14).

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