CN112279474A - Sludge high-temperature wall-breaking flash evaporation hydrolysis and dehydration pretreatment system - Google Patents
Sludge high-temperature wall-breaking flash evaporation hydrolysis and dehydration pretreatment system Download PDFInfo
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- CN112279474A CN112279474A CN202011130283.3A CN202011130283A CN112279474A CN 112279474 A CN112279474 A CN 112279474A CN 202011130283 A CN202011130283 A CN 202011130283A CN 112279474 A CN112279474 A CN 112279474A
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- 239000010802 sludge Substances 0.000 title claims abstract description 211
- 230000007062 hydrolysis Effects 0.000 title claims abstract description 118
- 238000006460 hydrolysis reaction Methods 0.000 title claims abstract description 118
- 238000001704 evaporation Methods 0.000 title claims abstract description 41
- 230000008020 evaporation Effects 0.000 title claims abstract description 41
- 230000018044 dehydration Effects 0.000 title claims abstract description 15
- 238000006297 dehydration reaction Methods 0.000 title claims abstract description 15
- 238000006243 chemical reaction Methods 0.000 claims abstract description 61
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 238000011084 recovery Methods 0.000 claims abstract description 29
- 238000004062 sedimentation Methods 0.000 claims abstract description 26
- 238000002156 mixing Methods 0.000 claims abstract description 12
- 238000010438 heat treatment Methods 0.000 claims description 105
- 238000005507 spraying Methods 0.000 claims description 34
- 238000005496 tempering Methods 0.000 claims description 26
- 230000003750 conditioning effect Effects 0.000 claims description 17
- 239000006228 supernatant Substances 0.000 claims description 13
- 239000007921 spray Substances 0.000 claims description 8
- 238000007701 flash-distillation Methods 0.000 claims description 3
- 230000003301 hydrolyzing effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 11
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 7
- 238000005336 cracking Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 239000003814 drug Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000009928 pasteurization Methods 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 150000001413 amino acids Chemical class 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000000701 coagulant Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 230000003071 parasitic effect Effects 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 102000004169 proteins and genes Human genes 0.000 description 2
- 108090000623 proteins and genes Proteins 0.000 description 2
- 238000000197 pyrolysis Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 241000282414 Homo sapiens Species 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 244000052616 bacterial pathogen Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/0039—Settling tanks provided with contact surfaces, e.g. baffles, particles
- B01D21/0051—Plurality of tube like channels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/009—Heating or cooling mechanisms specially adapted for settling tanks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/02—Settling tanks with single outlets for the separated liquid
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/10—Treatment of sludge; Devices therefor by pyrolysis
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/13—Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The invention discloses a sludge high-temperature wall-breaking flash evaporation hydrolysis dehydration pretreatment system, which comprises: a sludge hopper, a plunger pump, a high-temperature high-pressure sludge wall breaking reaction kettle, a medium-temperature flash evaporation hydrolysis tank, a dosing mixing tank and an inclined tube heat recovery settling pond. The invention utilizes the high-temperature high-pressure sludge wall breaking reaction kettle, the medium-temperature flash evaporation hydrolysis tank, the inclined tube heat recovery sedimentation tank and the belt filter press as the sludge pretreatment process system to reduce the water content of the sludge from 80% to 60%, and has the advantages of low cost, harmlessness, high efficiency and energy conservation.
Description
Technical Field
The invention relates to the field of sludge pretreatment, and particularly provides a sludge high-temperature wall-breaking flash evaporation hydrolysis dehydration pretreatment system.
Background
The municipal sludge is excess sludge of a sewage treatment plant and has the characteristics of complex components, colloidal state, easy decay and stink generation, high content of heavy metals and toxic and harmful pollutants, high water content but extremely poor dehydration property, difficult dehydration, large quantity of pathogenic bacteria and parasitic ova and the like. If the sludge cannot be treated properly, the sludge causes great harm to the environment, the health of human beings, animals and plants and the like. The sludge organic matter is active bacteria mass, and water in cells is difficult to separate. In the sludge pretreatment technology in the industry, a mode of combining agent conditioning (adding various coagulants or coagulants) with mechanical dehydration is usually adopted, so that the defects of high investment and maintenance cost, high energy consumption, limited treatment effect and the like generally exist, the required conditioning agent amount is large, water in the sludge cannot be removed, the sludge is possibly converted into chemical sludge in the treatment process, and the trouble is caused to subsequent treatment.
Disclosure of Invention
The invention aims to provide a sludge high-temperature wall-breaking flash evaporation hydrolysis dehydration pretreatment system, which takes a high-temperature high-pressure sludge wall-breaking reaction kettle, a medium-temperature flash evaporation hydrolysis tank, an inclined tube heat recovery settling pond and a belt filter press as a sludge pretreatment process system to reduce the water content of sludge from 80% to 60%, and has the advantages of low cost, harmlessness, high efficiency and energy conservation.
The technical scheme of the invention is as follows: the utility model provides a mud high temperature broken wall flash distillation hydrolytic dehydration pretreatment systems, includes: a sludge hopper 100, a plunger pump 200, a high-temperature high-pressure sludge wall breaking reaction kettle 300, a medium-temperature flash evaporation hydrolysis tank 400, a dosing mixing tank 500 and an inclined tube heat recovery settling pond 600;
the high-temperature high-pressure sludge wall-breaking reaction kettle 300 comprises a reaction kettle sludge inlet pipeline 301, a reaction kettle sludge outlet pipeline 302, a reaction kettle shell 303, a high-temperature steam pipeline 304, a preheating section steam inlet pipeline 305, a preheating coil inlet pipeline 307, a primary preheating coil 308, a secondary preheating coil 309, a preheating section steam conditioning coil 310, a steam outlet hole I311, a preheating coil outlet pipeline 312, a high-temperature heating section steam inlet pipeline 313, a high-temperature heating section steam conditioning coil 314, a steam outlet hole II 315, a high-temperature heating coil inlet pipeline 316, a secondary high-temperature heating coil 317, a primary high-temperature heating coil 318 and a high-temperature heating coil outlet pipeline 319;
the reaction kettle shell 303 is of a U-shaped rotary structure and comprises a shell inlet section 303a, a shell rotary section 303b and a shell outlet section 303c, and the reaction kettle sludge inlet pipeline 301 and the reaction kettle sludge outlet pipeline 302 are correspondingly connected to the shell inlet section 303a and the shell outlet section 303 c; one end of the preheating section steam inlet pipeline 305, one end of the high-temperature heating section steam inlet pipeline 313 and one end of the high-temperature heating coil inlet pipeline 316 are connected with the high-temperature steam pipeline 304, and the other end of the high-temperature heating coil inlet pipeline extends into the shell inlet section 303 a; a preheating section and a high-temperature heating section are sequentially arranged from one side of a sludge inlet pipeline 301 of the reaction kettle to one side of a shell rotary section 303b in the shell inlet section 303a, a primary preheating coil 308, a secondary preheating coil 309 and a preheating section steam tempering coil 310 are arranged on the preheating section, and a high-temperature heating section steam tempering coil 314, a secondary high-temperature heating coil 317 and a primary high-temperature heating coil 318 are arranged on the high-temperature heating section; the preheating section steam inlet pipeline 305 is connected with the inlet end of a preheating section steam conditioning coil 310, the preheating section steam conditioning coil 310 is positioned on the inner side of a second-stage preheating coil 309, and steam outlet holes I311 are distributed in the preheating section steam conditioning coil 310; one end of the preheating coil inlet pipeline 307 extends into the shell inlet section 303a and is respectively connected with the inlet ends of the primary preheating coil 308 and the secondary preheating coil 309, and the secondary preheating coil 309 is positioned on the inner side of the primary preheating coil 308; one end of the preheating coil outlet pipeline 312 extends into the shell inlet section 303a and is respectively connected with outlet ends of the first-stage preheating coil 308 and the second-stage preheating coil 309; the high-temperature heating section steam inlet pipeline 313 is connected with the inlet end of a high-temperature heating section steam tempering coil 314, the high-temperature heating section steam tempering coil 314 is positioned on the inner side of a second-stage high-temperature heating coil 317, and steam outlet holes II 315 are distributed in the high-temperature heating section steam tempering coil 314; the inlet pipeline 316 of the high-temperature heating coil is respectively connected with the inlet ends of a secondary high-temperature heating coil 317 and a primary high-temperature heating coil 318, and the secondary high-temperature heating coil 317 is positioned at the inner side of the primary high-temperature heating coil 318; one end of the high-temperature heating coil outlet pipeline 319 extends into the shell inlet section 303a and is respectively connected with outlet ends of the secondary high-temperature heating coil 317 and the primary high-temperature heating coil 318;
the medium-temperature flash evaporation hydrolysis tank 400 comprises a heat tracing coil inlet pipeline 401, a heat tracing coil outlet pipeline 402, a hydrolysis tank sludge inlet pipeline 403, a hydrolysis tank spraying coil inlet pipeline 404, a hydrolysis tank sludge outlet pipeline 405, an access port 406, a spraying port 407, an atmosphere communicating pipe 408, a gas collecting pipeline 409, a safety valve 410, a heat tracing coil 411, a spraying coil 412 and a hydrolysis tank body 413;
the heat tracing coil 411 is arranged at the bottom in the hydrolysis tank body 413, one end of the heat tracing coil inlet pipeline 401 and one end of the heat tracing coil outlet pipeline 402 are respectively connected with the heat tracing coil 411, and the other end of the heat tracing coil inlet pipeline 401 and the other end of the heat tracing coil outlet pipeline 402 extend out of the hydrolysis tank body 413; the spraying coil 412 is arranged at the top in the hydrolysis tank body 413, spraying ports 407 are distributed on the spraying coil 412, one end of a hydrolysis tank spraying coil inlet pipeline 404 is connected with the spraying coil 412, and the other end of the hydrolysis tank spraying coil inlet pipeline extends out of the hydrolysis tank body 413 from the top of the hydrolysis tank body 413; the hydrolysis tank sludge inlet pipeline 403 enters the hydrolysis tank body 413 from the top of the hydrolysis tank body 413, and the hydrolysis tank sludge inlet pipeline 403 penetrates through the spraying coil 412 to the position below the spraying coil 412; the hydrolysis tank sludge outlet pipeline 405 and the access hole 406 are both arranged on the side wall of the lower part of the hydrolysis tank body 413 and are positioned above the heat tracing coil 411; the atmosphere communicating pipe 408, the gas collecting pipeline 409 and the safety valve 410 are all arranged at the top of the hydrolysis tank body 413;
the inclined tube heat recovery settling pond 600 comprises a settling pond sludge inlet pipeline 601, an inclined tube coil inlet pipeline 602, an inclined tube coil 603, an inclined tube coil outlet pipeline 604, a supernatant recovery pipeline 605, a sludge settling tank 606, a sludge suction port 607, a settling pond sludge outlet pipeline 608 and a settling pond body 609;
the sedimentation tank body 609 is of a box body structure, the bottom of the sedimentation tank body is inclined from the rear side to the front side, and a sludge sedimentation tank 606 is arranged on the front side of the bottom; the settling tank sludge inlet pipeline 601 is positioned above the rear side of the settling tank body 609, the inclined tube coil inlet pipeline 602 and the inclined tube coil outlet pipeline 604 respectively enter the settling tank body 609 from the outside of the side of the settling tank body 609, the inclined tube coil 603 is suspended inside the settling tank body 609 and is connected with the inclined tube coil inlet pipeline 602 and the inclined tube coil outlet pipeline 604, and the supernatant recovery pipeline 605 is positioned outside the front side of the settling tank body 609 and is communicated with the inside of the settling tank body 609; the sludge suction port 607 is positioned in the sludge settling tank 606, and the sludge outlet pipeline 608 of the settling tank is positioned outside the front side of the tank body 609 of the settling tank and is connected with the sludge suction port 607;
the plunger pump 200 is arranged at the lower end of the sludge hopper 100 and is connected with a reaction kettle sludge inlet pipeline 301, the reaction kettle sludge outlet pipeline 302 is connected with a hydrolysis tank sludge inlet pipeline 403, the hydrolysis tank sludge outlet pipeline 405 is connected with a dosing mixing tank 500, and the top of the dosing mixing tank 500 is connected with a sedimentation tank sludge inlet pipeline 601; the inclined tube coil outlet pipe 604 is connected to the preheating coil inlet pipe 307, and the preheating coil outlet pipe 312 is connected to the inclined tube coil inlet pipe 602; the supernatant recovery line 605 and the hydrolysis tank spray coil inlet line 404.
Further, high temperature high pressure sludge broken wall reation kettle 300 still includes equipment base 320, equipment base 320 is located reation kettle casing 303 below and is used for supporting reation kettle casing 303.
Further, the medium in the inclined tube coil 603 is water.
Further, the inclined tube coil 603 is a structure in which the coil is arranged obliquely.
The invention has the following beneficial effects:
according to the invention, a high-temperature high-pressure sludge wall-breaking reaction kettle is used for carrying out wall-breaking treatment on sludge with the water content of 80%, then the wall is further fully broken through a medium-temperature flash evaporation hydrolysis tank to form inorganic sludge, the sludge and water are separated through an inclined tube heat recovery sedimentation tank, the separated water can be recycled, and the separated sludge is dehydrated through a belt filter press to reduce the water content of the sludge to 60%. The system realizes low-cost and harmless treatment of sludge, and is efficient and energy-saving.
1. Breaking the wall at high temperature and high pressure: the sludge enters a high-temperature high-pressure wall breaking reaction kettle, does not need to be stirred, is discharged along with the sludge, is treated in time and can continuously work; inside preheating section and the high temperature heating section that is equipped with the high temperature coil pipe and forms of high temperature high pressure broken wall reation kettle, be heated evenly, the throughput is big, and the broken wall is efficient.
2. Intermediate-temperature flash hydrolysis: the high-temperature sludge enters a medium-temperature flash evaporation hydrolysis tank, hot water at the temperature of 60-80 ℃ is added to realize trapping, the temperature and the pressure are reduced, a micro negative pressure environment is formed, and the whole flash evaporation hydrolysis process has the advantages of low cost, high efficiency and good hydrolysis effect.
3. The inclined tube type sedimentation technology comprises the following steps: the method has the advantages that the cleaning is not needed, the precipitation area is increased, the efficiency is high, the heat recovery is simultaneously carried out, and the method is used for the preheating section of the high-temperature high-pressure wall-breaking reaction kettle, so that the energy is saved; and recycling a part of the water subjected to settling separation for the medium-temperature flash evaporation hydrolysis tank, and conveying a part of the water to a sewage treatment plant for purification and recycling.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural diagram of a high-temperature high-pressure sludge wall-breaking reaction kettle 300 according to the present invention;
FIG. 3 is a schematic structural diagram of a preheating section of a high-temperature high-pressure sludge wall-breaking reaction kettle 300 in the invention;
FIG. 4 is a schematic structural diagram of a high-temperature heating section of a high-temperature high-pressure sludge wall-breaking reaction kettle 300 according to the present invention;
FIG. 5 is a schematic diagram of the medium temperature flash hydrolysis tank 400 according to the present invention;
FIG. 6 is a top view of a sloped tube heat recovery settling tank 600 of the present invention;
fig. 7 is a side perspective view of the inclined tube heat recovery settling tank 600 of the present invention;
in the figure: 100. a sludge hopper; 200. a plunger pump; 300. a high-temperature high-pressure sludge wall breaking reaction kettle; 301. a sludge inlet pipeline of the reaction kettle; 302. a sludge outlet pipeline of the reaction kettle; 303. a reaction kettle shell; 303a, a housing inlet section; 303b, a shell turning section; 303c, a housing outlet section; 304. a high temperature steam line; 305. a preheating section steam inlet pipeline; 307. preheating a coil inlet pipeline; 308. a primary preheating coil pipe; 309. a secondary preheating coil pipe; 310. a preheating section steam tempering coil pipe; 311. a steam outlet hole I; 312. preheating an outlet pipeline of the coil; 313. a high temperature heating section steam inlet pipeline; 314. steam tempering coil pipe of high-temperature heating section; 315. a steam outlet hole II; 316. a high temperature heating coil inlet conduit; 317. a secondary high temperature heating coil; 318. a primary high temperature heating coil; 319. an outlet conduit of the high temperature heating coil; 320. an equipment base; 400. a medium-temperature flash evaporation hydrolysis tank; 401. a heat tracing coil inlet pipe; 402. a heat tracing coil outlet pipe; 403. a hydrolysis tank sludge inlet pipeline; 404. the inlet pipeline of the spray coil of the hydrolysis tank; 405. a hydrolysis tank sludge outlet pipeline; 406. an access hole; 407. a spray port; 408. an atmosphere communicating pipe; 409. a gas collection conduit; 410. a safety valve; 411. a heat tracing coil pipe; 412. spraying a coil pipe; 413. a hydrolysis tank body; 500. adding a medicine into a mixing tank; 600. an inclined tube heat recovery settling pond; 601. a sedimentation tank sludge inlet pipeline; 602. an inclined tube coil inlet pipe; 603. an inclined tube coil pipe; 604. an inclined tube coil outlet pipeline; 605. a supernatant recovery pipeline; 606. a sludge settling tank; 607. a sludge suction port is formed; 608. a sedimentation tank sludge outlet pipeline; 609. and 4, settling tank bodies.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
As shown in fig. 1, a pretreatment system for sludge high-temperature wall-breaking flash evaporation hydrolysis comprises: 100 sludge buckets, 200 plunger pumps, 300 high-temperature high-pressure sludge wall breaking reaction kettles, 400 intermediate-temperature flash evaporation hydrolysis tanks, 500 chemical adding mixing tanks and 600 inclined tube heat recovery settling tanks.
As shown in fig. 2, 3 and 4, the high-temperature high-pressure sludge wall-breaking reaction kettle 300 includes a reaction kettle sludge inlet pipeline 301, a reaction kettle sludge outlet pipeline 302, a reaction kettle shell 303, a high-temperature steam pipeline 304, a preheating section steam inlet pipeline 305, a preheating coil inlet pipeline 307, a first-stage preheating coil 308, a second-stage preheating coil 309, a preheating section steam conditioning coil 310, a steam outlet hole i 311, a preheating coil outlet pipeline 312, a high-temperature heating section steam inlet pipeline 313, a high-temperature heating section steam conditioning coil 314, a steam outlet hole ii 315, a high-temperature heating coil inlet pipeline 316, a second-stage high-temperature heating coil 317, a first-stage high-temperature heating coil 318 and a high-temperature heating coil outlet pipeline 319.
The reaction kettle shell 303 is of a U-shaped rotary structure and comprises a shell inlet section 303a, a shell rotary section 303b and a shell outlet section 303c, and the reaction kettle sludge inlet pipeline 301 and the reaction kettle sludge outlet pipeline 302 are correspondingly connected to the shell inlet section 303a and the shell outlet section 303 c; one end of a preheating section steam inlet pipeline 305, a high-temperature heating section steam inlet pipeline 313 and a high-temperature heating coil inlet pipeline 316 is connected with the high-temperature steam pipeline 304, and the other end of the preheating section steam inlet pipeline, the high-temperature heating section steam inlet pipeline 313 and the high-temperature heating coil inlet pipeline 316 extend into the shell inlet section 303 a; a preheating section and a high-temperature heating section are sequentially arranged from one side of the sludge inlet pipeline 301 of the reaction kettle to one side of the shell rotary section 303b in the shell inlet section 303a, a primary preheating coil 308, a secondary preheating coil 309 and a preheating section steam tempering coil 310 are arranged on the preheating section, and a high-temperature heating section steam tempering coil 314, a secondary high-temperature heating coil 317 and a primary high-temperature heating coil 318 are arranged on the high-temperature heating section; a preheating section steam inlet pipeline 305 is connected with the inlet end of a preheating section steam tempering coil 310, the preheating section steam tempering coil 310 is positioned on the inner side of a second-stage preheating coil 309, and steam outlet holes I311 are distributed in the preheating section steam tempering coil 310; one end of a preheating coil inlet pipeline 307 extends into the shell inlet section 303a and is respectively connected with the inlet ends of a primary preheating coil 308 and a secondary preheating coil 309, and the secondary preheating coil 309 is positioned on the inner side of the primary preheating coil 308; one end of the preheating coil outlet pipe 312 extends into the shell inlet section 303a and is respectively connected with the outlet ends of the first-stage preheating coil 308 and the second-stage preheating coil 309; a steam inlet pipeline 313 of the high-temperature heating section is connected with the inlet end of a steam tempering coil 314 of the high-temperature heating section, the steam tempering coil 314 of the high-temperature heating section is positioned on the inner side of a secondary high-temperature heating coil 317, and steam outlet holes II 315 are distributed on the steam tempering coil 314 of the high-temperature heating section; the inlet pipeline 316 of the high-temperature heating coil is respectively connected with the inlet ends of a secondary high-temperature heating coil 317 and a primary high-temperature heating coil 318, and the secondary high-temperature heating coil 317 is positioned at the inner side of the primary high-temperature heating coil 318; one end of the high temperature heating coil outlet conduit 319 extends into the interior of the housing inlet section 303a and is connected to the outlet ends of the secondary high temperature heating coil 317 and the primary high temperature heating coil 318, respectively. The high-temperature high-pressure sludge wall breaking reaction kettle 300 further comprises an equipment base 320, and the equipment base 320 is arranged below the reaction kettle shell 303 and used for supporting the reaction kettle shell 303.
High temperature high pressure sludge broken wall reation kettle 300 utilizes high temperature coil pipe thermally equivalent, has increased the efficiency of pyrolysis broken wall:
1. high-temperature coil pipe: the stainless steel pipe is made of stainless steel and is divided into three forms of a preheating coil, a high-temperature heating coil and a steam tempering coil, and a medium in the pipe can be high-temperature heat conduction oil, steam or hot water, is arranged in the equipment shell and can be respectively applied to a preheating section and a high-temperature heating section;
2. a preheating section: the system consists of a preheating coil pipe and a steam conditioning coil pipe, wherein the medium in the preheating coil pipe is hot water at the temperature of 70-90 ℃, and the medium in the steam conditioning coil pipe is high-temperature steam at the temperature of about 150-170 ℃, so that sludge which just enters the equipment is preheated;
3. a high-temperature heating section: the device consists of a high-temperature heating coil and a steam tempering coil, wherein the medium in the high-temperature heating coil is high-temperature steam or heat conducting oil at the temperature of 150-170 ℃, and the medium in the steam tempering coil is high-temperature steam at the temperature of 150-170 ℃, so that high temperature and high pressure are formed, and the efficient cracking and wall breaking of sludge are realized;
4. steam tempering coil pipe: steam outlet holes are formed in the steam conditioning coil, high-temperature steam is blown into sludge through the steam outlet holes, so that the water content of the sludge is increased, the resistance is reduced, the fluidity of the sludge is increased, the blockage in equipment is prevented, and the wall breaking efficiency is improved;
5. the efficiency is improved: the forms of the preheating section and the high-temperature heating section can be flexibly selected according to project conditions, the high-temperature coil form is adopted, the heating is uniform, stirring and sludge retention are not required, the sludge can be discharged along with the inlet and outlet, the instant treatment is realized, and the treatment capacity is larger; the equipment shell is additionally subjected to heat preservation and insulation treatment, so that heat loss is reduced, the surface temperature of the equipment is controlled to be 35-45 ℃, the pyrolysis wall breaking efficiency is improved, and meanwhile, the safety of operators is guaranteed.
The working principle of the high-temperature high-pressure sludge wall breaking reaction kettle 300 is as follows: mud gets into reation kettle through reation kettle mud inlet pipeline 301, preheats through preheating section earlier: hot water at 70-90 ℃ enters a primary preheating coil 308 and a secondary preheating coil 309 through a preheating coil inlet pipeline 307 to heat sludge, and high-temperature steam at 150-170 ℃ enters a preheating section steam conditioning coil 310 through a preheating section steam inlet pipeline 305 to rapidly heat the pipelines, and the steam is discharged from a steam outlet hole I311, so that the temperature and the pressure of the sludge are increased, the water content of the sludge is increased, and the flow rate of the sludge is increased; the preheated sludge enters a high-temperature heating section to carry out high-temperature high-pressure cracking and wall breaking reaction: high-temperature steam of 150-170 ℃ enters a primary high-temperature heating coil 318 and a secondary high-temperature heating coil 317 through a high-temperature heating coil inlet pipeline 316, the preheated sludge is subjected to high-temperature and high-pressure treatment, meanwhile, the high-temperature steam in the high-temperature heating section steam conditioning coil 314 is split into the sludge through a steam outlet hole II 315, the wall-breaking and cracking efficiency is accelerated, the sludge flows among the coils, and is uniformly heated and pressed, so that the wall-breaking efficiency is ensured; the sludge after the wall breaking reaction directly flows out of the sludge outlet pipeline 302 of the reaction kettle, the whole process does not need to stay, the sludge treatment efficiency and capacity are ensured, and the sludge treatment is high in quality and efficiency; the heat preservation measure is added outside the reaction kettle shell 303, so that on one hand, heat loss is reduced, and on the other hand, the safety of maintenance personnel is guaranteed.
As shown in fig. 5, the medium-temperature flash evaporation hydrolysis tank 400 comprises a heat tracing coil inlet pipeline 401, a heat tracing coil outlet pipeline 402, a hydrolysis tank sludge inlet pipeline 403, a hydrolysis tank spray coil inlet pipeline 404, a hydrolysis tank sludge outlet pipeline 405, an access port 406, a spray port 407, an atmosphere communicating pipe 408, a gas collecting pipeline 409, a safety valve 410, a heat tracing coil 411, a spray coil 412 and a hydrolysis tank body 413.
The heat tracing coil 411 is arranged at the bottom in the hydrolysis tank body 413, one end of a heat tracing coil inlet pipeline 401 and one end of a heat tracing coil outlet pipeline 402 are respectively connected with the heat tracing coil 411, and the other end of the heat tracing coil inlet pipeline 401 and the other end of the heat tracing coil outlet pipeline 402 extend out of the hydrolysis tank body 413; the spraying coil 412 is arranged at the top in the hydrolysis tank body 413, spraying ports 407 are arranged on the spraying coil 412, one end of a hydrolysis tank spraying coil inlet pipeline 404 is connected with the spraying coil 412, and the other end of the hydrolysis tank spraying coil inlet pipeline extends out of the hydrolysis tank body 413 from the top of the hydrolysis tank body 413; a hydrolysis tank sludge inlet pipeline 403 enters the interior of the hydrolysis tank body 413 from the top of the hydrolysis tank body 413, and the hydrolysis tank sludge inlet pipeline 403 penetrates through the spraying coil 412 to the position below the spraying coil 412; the hydrolysis tank sludge outlet pipeline 405 and the access hole 406 are both arranged on the side wall of the lower part of the hydrolysis tank body 413 and are positioned above the heat tracing coil 411; the atmosphere communicating pipe 408, the gas collecting pipeline 409 and the safety valve 410 are all arranged at the top of the hydrolysis tank body 413.
The medium-temperature flash evaporation hydrolysis tank 400 can be carried out in a micro-negative pressure environment, and has the advantages of strong flash evaporation capacity, full hydrolysis, low cost and high efficiency.
1. Micro negative pressure environment: the medium-temperature flash evaporation hydrolysis tank 400 adds hot water at 60-80 ℃ into high-temperature sludge at 160-180 ℃ in a spraying manner to realize trapping, reduce temperature and pressure, form a micro-negative pressure environment and improve the flash evaporation capacity of the sludge;
2. hydrolysis: adding hot water at 60-80 ℃ to dilute the sludge, thereby removing static electricity;
3. reinforced hydrolysis: the diluted sludge stays in the tank for 16-18 h, is fully hydrolyzed in the staying process, simultaneously forms a pasteurization effect, completely breaks the wall, and is combined with an anaerobic hydrolysis environment formed by micro negative pressure to decompose macromolecular proteins in the sludge into micromolecular amino acids;
4. steam tracing: a heat tracing coil is arranged at the bottom of the tank body, and the medium in the coil is high-temperature steam or heat conducting oil; the temperature of the sludge in the tank is kept at 60-80 ℃, and meanwhile, the sludge is automatically stirred by the downward and upward thermal power, so that the hydrolysis is enhanced.
The operating principle of the medium-temperature flash evaporation hydrolysis tank 400 is as follows: the sludge subjected to high-temperature and high-pressure wall breaking treatment at 160-180 ℃ enters the hydrolysis tank body 413 through the hydrolysis tank sludge inlet pipeline 403, meanwhile, hot water at 60-80 ℃ enters the spraying coil 412, and is sprayed downwards along with the sludge through the spraying port 407, so that the 160 ℃ sludge entering the hydrolysis tank body 413 is rapidly cooled and depressurized, flash evaporation wall breaking is realized, and the sprayed hot water catches flash evaporation gas, so that a micro-negative pressure state is maintained in the tank, and the flash evaporation wall breaking effect is further improved; after the sludge is mixed with hot water, diluting the sludge, removing static electricity, and staying in the tank for 18 hours to strengthen hydrolysis; high-temperature steam at 210 ℃ enters a heat tracing coil 411 through a heat tracing coil inlet pipeline 401, the steam quantity is controlled through a temperature control system, the temperature in the tank is maintained to be 60-80 ℃, and formed condensed water is recovered through a heat tracing coil outlet pipeline 402; the heat generated by the high-temperature coil pipe forms thermal power to realize self-stirring of the sludge; during the retention period, the formed pasteurization technology breaks the wall of the sludge thoroughly; meanwhile, anaerobic hydrolysis is realized, and the formed nutrient solution, namely macromolecular protein is decomposed into micromolecular amino acid which can be continuously separated and recycled; air enters the hydrolysis tank body 413 through the atmosphere communicating pipe 408, the pressure in the hydrolysis tank body 413 is adjusted, and sludge hydrolyzed by medium-temperature flash evaporation is conveniently discharged through the hydrolysis tank sludge outlet pipeline 405; gases such as methane generated in the flash evaporation hydrolysis process are recovered through a gas collecting pipeline 409; when the gas is excessive, the adjustment is performed through a safety valve 410; the hydrolysis tank body 413 is internally provided with a fault which can be overhauled through the access hole 406; the whole flash evaporation hydrolysis process has low cost, high efficiency and good hydrolysis effect, and the dehydration effect of the treated sludge can be reduced to 60 percent of water content.
As shown in fig. 6 and 7, the inclined tube heat recovery settling pond 600 includes a settling pond sludge inlet pipeline 601, an inclined tube coil inlet pipeline 602, an inclined tube coil 603, an inclined tube coil outlet pipeline 604, a supernatant recovery pipeline 605, a sludge settling tank 606, a sludge suction port 607, a settling pond sludge outlet pipeline 608, and a settling pond body 609.
The sedimentation tank body 609 is of a box body structure, the bottom of the sedimentation tank body is inclined from the rear side to the front side, and a sludge sedimentation tank 606 is arranged on the front side of the bottom; a settling pond sludge inlet pipeline 601 is positioned above the rear side of a settling pond body 609, an inclined tube coil inlet pipeline 602 and an inclined tube coil outlet pipeline 604 respectively enter the settling pond body 609 from the outside of the side of the settling pond body 609, an inclined tube coil 603 is suspended inside the settling pond body 609 and is connected with the inclined tube coil inlet pipeline 602 and the inclined tube coil outlet pipeline 604, and a supernatant recovery pipeline 605 is positioned outside the front side of the settling pond body 609 and is communicated with the inside of the settling pond body 609; the sludge suction port 607 is positioned in the sludge settling tank 606, and the settling tank sludge outlet pipeline 608 is positioned outside the front side of the settling tank body 609 and is connected with the sludge suction port 607. The inclined tube coil 303 is a structure in which the coil is arranged obliquely.
The inclined tube heat recovery settling tank 600 has the following characteristics:
1. easy maintenance: the inclined pipe coil pipe is adopted, a gap is reserved between the pipes, the resistance is small, and the sludge circulation is facilitated, so that the blockage can not be caused, the microorganisms can not be parasitized, and the cleaning is not needed.
2. The efficiency is high: the inclined tube coil form increases the sedimentation area, and simultaneously the water flow is changed from turbulent flow to laminar flow, thereby increasing the sedimentation efficiency.
3. And (3) heat recovery: the medium in the inclined tube coil is water, and the temperature of the sludge subjected to high-temperature wall breaking treatment is 60-80 ℃, so that the heat of the sludge in the settling tank can be recycled by the water in the inclined tube.
The working principle of the inclined tube heat recovery settling tank 600 is as follows: the sludge of 60-80 ℃ after the medium-temperature flash evaporation hydrolysis enters a sedimentation tank body 609 through a sedimentation tank sludge inlet pipeline 601, the sludge flows into the tank and contacts an inclined pipe coil 603 and then sinks to the bottom of the tank, a gap is reserved between the pipes, the resistance is small, the sludge circulation is facilitated, and therefore the blockage is not caused, the microorganisms are not parasitic, and the cleaning is not needed. The inclined tube coil form increases the sedimentation area, and simultaneously the water flow is changed from turbulent flow to laminar flow, thereby increasing the sedimentation efficiency. The medium in the pipe chute coil 603 is water, which enters from the pipe chute coil inlet pipe 602 and is sent out by the pipe chute coil outlet pipe 604 to realize circulation. The inclined tube coil 603 is immersed in the sludge at the temperature of 60-80 ℃, so that the water in the inclined tube coil 603 exchanges heat with the sludge and is recycled, and the energy is saved. Sludge and water separation is realized after the sludge stays for 10 hours. The settled sludge enters the sludge settling tank 606 due to the slope at the bottom of the settling tank body 609 and enters the sludge outlet pipeline 608 through the sludge suction port 607. The supernatant liquid after the sedimentation separation is sent to a sewage treatment plant for treatment and reuse through a supernatant liquid recovery pipeline 605.
The overall connection relationship among the devices of the present invention is as follows: the plunger pump 200 is arranged at the lower end of the sludge hopper 100 and is connected with a reaction kettle sludge inlet pipeline 301, a reaction kettle sludge outlet pipeline 302 is connected with a hydrolysis tank sludge inlet pipeline 403, a hydrolysis tank sludge outlet pipeline 405 is connected with a dosing mixing tank 500, and the top of the dosing mixing tank 500 is connected with a sedimentation tank sludge inlet pipeline 601; the tube coil outlet line 604 is connected to the pre-heating coil inlet line 307, the pre-heating coil outlet line 312 is connected to the tube coil inlet line 602; a supernatant recovery line 605 and a hydrolysis tank spray coil inlet line 404.
The working principle of the invention is as follows: mud gets into sludge bucket 100, is carried by plunger pump 200 and gets into high temperature high pressure mud broken wall reation kettle 300, preheats through preheating section earlier, promotes mud temperature and pressure on the one hand, and on the other hand makes the mud moisture content rise to accelerate the mud velocity of flow. And (3) the preheated sludge enters a high-temperature heating section to carry out high-temperature high-pressure cracking and wall breaking reaction. Sludge flows among the coil pipes in the reaction kettle, is uniformly heated and pressed, and ensures the wall breaking efficiency. The sludge after the wall breaking reaction directly flows out from the sludge outlet pipeline 302 of the reaction kettle, the whole process does not need to stay, the sludge treatment efficiency and capacity are ensured, and the sludge treatment device is high in quality and efficiency. At the moment, the temperature of the sludge reaches 160-180 ℃, then the sludge enters the medium-temperature flash evaporation hydrolysis tank 400, simultaneously hot water at the temperature of 60-80 ℃ enters the medium-temperature flash evaporation hydrolysis tank 400, and the sludge is sprayed downwards, so that the 160 ℃ sludge entering the tank is rapidly cooled and depressurized, and the flash evaporation wall breaking is realized. And the sprayed hot water catches the flash evaporation gas, so that a micro negative pressure state is maintained in the tank, and the flash evaporation wall breaking effect is further improved. The tank bottom heat tracing coil pipe 411 maintains the temperature of 60-80 ℃ in the tank, and the heat generated by the high temperature coil pipe forms thermal power to realize the self-stirring of the sludge. During the residence time, pasteurization is performed to break the wall of the sludge thoroughly. The mud after medium temperature flash distillation hydrolysis is again through adding medicine blending tank 500 a small amount of medicine and then entering pipe chute heat recovery sedimentation tank 600 in, mud flows into and subsides the separation in the pond, and the medium is water in pipe chute coil 603, and the heat transfer is carried out with the mud of 60 ℃ -80 ℃ after the high temperature broken wall is handled, therefore, the water in the pipe chute can be with the mud heat in the sedimentation tank retrieve and recycle, enters into high temperature high pressure sludge broken wall reation kettle 300 and preheats mud. One part of the supernatant is sprayed into the medium-temperature flash evaporation hydrolysis tank 400 for use, and the rest is recycled after treatment. The settled and separated sludge is sent to a belt filter press through a sludge outlet pipeline 608 of the settling pond for mechanical dehydration, and the water content of the sludge is reduced to 60%.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (4)
1. The utility model provides a mud high temperature broken wall flash distillation hydrolytic dehydration pretreatment system which characterized in that includes: a sludge hopper (100), a plunger pump (200), a high-temperature high-pressure sludge wall breaking reaction kettle (300), a medium-temperature flash evaporation hydrolysis tank (400), a dosing mixing tank (500) and an inclined tube heat recovery settling tank (600);
the high-temperature high-pressure sludge wall breaking reaction kettle (300) comprises a reaction kettle sludge inlet pipeline (301), a reaction kettle sludge outlet pipeline (302), a reaction kettle shell (303), a high-temperature steam pipeline (304), a preheating section steam inlet pipeline (305), a preheating coil inlet pipeline (307), a primary preheating coil (308), a secondary preheating coil (309), a preheating section steam tempering coil (310), a steam outlet hole I (311), a preheating coil outlet pipeline (312), a high-temperature heating section steam inlet pipeline (313), a high-temperature heating section steam tempering coil (314), a steam outlet hole II (315), a high-temperature heating coil inlet pipeline (316), a secondary high-temperature heating coil (317), a primary high-temperature heating coil (318) and a high-temperature heating coil outlet pipeline (319);
the reaction kettle shell (303) is of a U-shaped rotary structure and comprises a shell inlet section (303a), a shell rotary section (303b) and a shell outlet section (303c), and the reaction kettle sludge inlet pipeline (301) and the reaction kettle sludge outlet pipeline (302) are correspondingly connected to the shell inlet section (303a) and the shell outlet section (303 c); one end of the preheating section steam inlet pipeline (305), one end of the high-temperature heating section steam inlet pipeline (313) and one end of the high-temperature heating coil inlet pipeline (316) are connected with the high-temperature steam pipeline (304), and the other end of the high-temperature heating coil inlet pipeline extends into the shell inlet section (303 a); a preheating section and a high-temperature heating section are sequentially arranged from one side of a sludge inlet pipeline (301) of the reaction kettle to one side of a shell rotary section (303b) in the shell inlet section (303a), a primary preheating coil (308), a secondary preheating coil (309) and a preheating section steam tempering coil (310) are arranged on the preheating section, and a high-temperature heating section steam tempering coil (314), a secondary high-temperature heating coil (317) and a primary high-temperature heating coil (318) are arranged on the high-temperature heating section; the preheating section steam inlet pipeline (305) is connected with the inlet end of a preheating section steam conditioning coil (310), the preheating section steam conditioning coil (310) is positioned on the inner side of a secondary preheating coil (309), and steam outlet holes I (311) are distributed in the preheating section steam conditioning coil (310); one end of the preheating coil inlet pipeline (307) extends into the shell inlet section (303a) and is respectively connected with the inlet ends of the primary preheating coil (308) and the secondary preheating coil (309), and the secondary preheating coil (309) is positioned on the inner side of the primary preheating coil (308); one end of the preheating coil outlet pipeline (312) extends into the shell inlet section (303a) and is respectively connected with the outlet ends of the first-stage preheating coil (308) and the second-stage preheating coil (309); the high-temperature heating section steam inlet pipeline (313) is connected with the inlet end of a high-temperature heating section steam tempering coil (314), the high-temperature heating section steam tempering coil (314) is positioned on the inner side of a second-stage high-temperature heating coil (317), and steam outlet holes II (315) are distributed in the high-temperature heating section steam tempering coil (314); the inlet pipeline (316) of the high-temperature heating coil is respectively connected with the inlet ends of a secondary high-temperature heating coil (317) and a primary high-temperature heating coil (318), and the secondary high-temperature heating coil (317) is positioned at the inner side of the primary high-temperature heating coil (318); one end of the high-temperature heating coil outlet pipeline (319) extends into the shell inlet section (303a) and is respectively connected with the outlet ends of the second-stage high-temperature heating coil (317) and the first-stage high-temperature heating coil (318);
the medium-temperature flash evaporation hydrolysis tank (400) comprises a heat tracing coil inlet pipeline (401), a heat tracing coil outlet pipeline (402), a hydrolysis tank sludge inlet pipeline (403), a hydrolysis tank spraying coil inlet pipeline (404), a hydrolysis tank sludge outlet pipeline (405), an access hole (406), a spraying hole (407), an atmosphere communicating pipe (408), a gas collecting pipeline (409), a safety valve (410), a heat tracing coil (411), a spraying coil (412) and a hydrolysis tank body (413);
the heat tracing coil pipe (411) is arranged at the inner bottom of the hydrolysis tank body (413), one end of an inlet pipeline (401) and one end of an outlet pipeline (402) of the heat tracing coil pipe are respectively connected with the heat tracing coil pipe (411), and the other end of the inlet pipeline and the outlet pipeline of the heat tracing coil pipe extend out of the hydrolysis tank body (413); the spraying coil (412) is arranged at the inner top of the hydrolysis tank body (413), spraying ports (407) are distributed in the spraying coil (412), one end of a hydrolysis tank spraying coil inlet pipeline (404) is connected with the spraying coil (412), and the other end of the hydrolysis tank spraying coil inlet pipeline extends out of the top of the hydrolysis tank body (413) to the outside of the hydrolysis tank body (413); the hydrolysis tank sludge inlet pipeline (403) enters the hydrolysis tank body (413) from the top of the hydrolysis tank body (413), and the hydrolysis tank sludge inlet pipeline (403) penetrates through the spraying coil (412) to the position below the spraying coil (412); the hydrolysis tank sludge outlet pipeline (405) and the access hole (406) are both arranged on the side wall of the lower part of the hydrolysis tank body (413) and are positioned above the heat tracing coil pipe (411); the atmosphere communicating pipe (408), the gas collecting pipeline (409) and the safety valve (410) are all arranged at the top of the hydrolysis tank body (413);
the inclined tube heat recovery settling pond (600) comprises a settling pond sludge inlet pipeline (601), an inclined tube coil inlet pipeline (602), an inclined tube coil (603), an inclined tube coil outlet pipeline (604), a supernatant recovery pipeline (605), a sludge settling tank (606), a sludge suction port (607), a settling pond sludge outlet pipeline (608) and a settling pond body (609);
the sedimentation tank body (609) is of a box body structure, the bottom of the sedimentation tank body inclines from the rear side to the front side, and a sludge sedimentation tank (606) is arranged on the front side of the bottom; the settling tank sludge inlet pipeline (601) is positioned above the rear side of the settling tank body (609), the inclined tube coil inlet pipeline (602) and the inclined tube coil outlet pipeline (604) respectively enter the settling tank body (609) from the outside of the side of the settling tank body (609), the inclined tube coil (603) is suspended inside the settling tank body (609) and is connected with the inclined tube coil inlet pipeline (602) and the inclined tube coil outlet pipeline (604), and the supernatant recovery pipeline (605) is positioned outside the front side of the settling tank body (609) and is communicated with the inside of the settling tank body (609); the sludge suction port (607) is positioned in the sludge settling tank (606), and the sludge outlet pipeline (608) of the settling tank is positioned outside the front side of the tank body (609) of the settling tank and is connected with the sludge suction port (607);
the plunger pump (200) is arranged at the lower end of the sludge hopper (100) and is connected with a sludge inlet pipeline (301) of the reaction kettle, a sludge outlet pipeline (302) of the reaction kettle is connected with a sludge inlet pipeline (403) of the hydrolysis tank, a sludge outlet pipeline (405) of the hydrolysis tank is connected with a dosing mixing tank (500), and the top of the dosing mixing tank (500) is connected with a sludge inlet pipeline (601) of the sedimentation tank; the inclined tube coil outlet pipeline (604) is connected with the preheating coil inlet pipeline (307), and the preheating coil outlet pipeline (312) is connected with the inclined tube coil inlet pipeline (602); the supernatant recovery pipeline (605) and the hydrolysis tank spray coil inlet pipeline (404).
2. The pretreatment system for high-temperature wall-breaking flash evaporation hydrolysis and dehydration of sludge as claimed in claim 1, wherein the high-temperature high-pressure sludge wall-breaking reaction kettle (300) further comprises an equipment base (320), and the equipment base (320) is arranged below the reaction kettle shell (303) and used for supporting the reaction kettle shell (303).
3. The pretreatment system for sludge high-temperature wall-breaking flash evaporation hydrolysis and dehydration according to claim 1, wherein a medium in the inclined tube coil (603) is water.
4. The pretreatment system for sludge high-temperature wall-breaking flash evaporation hydrolysis and dehydration according to claim 1, wherein the inclined tube coil (603) is a structure in which the coil is arranged in an inclined manner.
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