CN110980845A - Combined device and process for treating salt-containing organic waste liquid - Google Patents
Combined device and process for treating salt-containing organic waste liquid Download PDFInfo
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- CN110980845A CN110980845A CN201911302435.0A CN201911302435A CN110980845A CN 110980845 A CN110980845 A CN 110980845A CN 201911302435 A CN201911302435 A CN 201911302435A CN 110980845 A CN110980845 A CN 110980845A
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- 150000003839 salts Chemical class 0.000 title claims abstract description 115
- 239000010815 organic waste Substances 0.000 title claims abstract description 86
- 239000007788 liquid Substances 0.000 title claims abstract description 83
- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000008569 process Effects 0.000 title claims abstract description 11
- 238000002844 melting Methods 0.000 claims abstract description 69
- 230000008018 melting Effects 0.000 claims abstract description 69
- 238000002425 crystallisation Methods 0.000 claims abstract description 26
- 230000008025 crystallization Effects 0.000 claims abstract description 26
- 238000005338 heat storage Methods 0.000 claims description 28
- 239000002699 waste material Substances 0.000 claims description 28
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 24
- 239000003546 flue gas Substances 0.000 claims description 24
- 238000001704 evaporation Methods 0.000 claims description 23
- 230000008020 evaporation Effects 0.000 claims description 20
- 239000007787 solid Substances 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 15
- 239000007789 gas Substances 0.000 claims description 12
- 238000011084 recovery Methods 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 8
- 230000007704 transition Effects 0.000 claims description 8
- 238000000746 purification Methods 0.000 claims description 7
- 229910017053 inorganic salt Inorganic materials 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 5
- 238000005097 cold rolling Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 239000002910 solid waste Substances 0.000 claims description 5
- 239000002918 waste heat Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 4
- 230000014759 maintenance of location Effects 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 239000003345 natural gas Substances 0.000 claims description 2
- 230000009897 systematic effect Effects 0.000 claims description 2
- 239000000446 fuel Substances 0.000 abstract description 5
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000010170 biological method Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000000053 physical method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000009279 wet oxidation reaction Methods 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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/048—Purification of waste water by evaporation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D49/00—Separating dispersed particles from gases, air or vapours by other methods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J6/00—Heat treatments such as Calcining; Fusing ; Pyrolysis
- B01J6/005—Fusing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/04—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste liquors, e.g. sulfite liquors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The invention discloses a combined device for treating salt-containing organic waste liquid, which comprises an MVR evaporative crystallization device and a high-temperature melting furnace, wherein the high-temperature melting furnace is provided with a molten salt discharge port and a burner, and the MVR evaporative crystallization device is connected with the high-temperature melting furnace through a feeding and conveying system; the invention also discloses a combined process for treating the salt-containing organic waste liquid; the combined device firstly evaporates and crystallizes the salt-containing organic waste liquid, then burns the salt-containing organic waste liquid, reduces the consumption of auxiliary fuel, has high organic waste removal rate, recycles energy and improves the treatment efficiency.
Description
Technical Field
The invention relates to the technical field of hazardous waste environment protection, in particular to a combined device and a process for treating salt-containing organic waste liquid.
Background
In recent years, the rapid development of chemical industry, pharmacy, papermaking and other industries generates a large amount of salt-containing waste liquid, the discharge of the salt-containing waste liquid brings serious environmental pollution, and especially, the industrial salt-containing organic waste liquid not only contains high-concentration salt, but also contains a large amount of toxic and difficultly-degradable organic matters, so that the organic waste liquid has great harm to the environment. The salt-containing organic waste liquid which is not fully treated poses serious threat to the environment, and meanwhile, the salt-containing organic waste liquid is also a concentrated resource from which inorganic salt can be recovered.
Common treatment methods for the salt-containing organic waste liquid include a physical method, a biological method, an advanced oxidation method, a wet oxidation method, an incineration method and the like. When the components in the salt-containing organic waste liquid are very complex and difficult to biodegrade, the pollution can not be controlled by a physical method or a biological method. The advanced oxidation method is not economical for treating the salt-containing organic waste liquid with high concentration, because the consumption of the oxidant is increased along with the increase of the concentration of the pollutants. The incineration method is an effective treatment method of organic waste liquid containing salt at high concentration, organic matters are decomposed into nontoxic and harmless micromolecular substances at high temperature, and meanwhile, heat generated by incineration can be used for heat recovery or power generation. Therefore, the incineration method is a treatment technology which can really realize reduction, harmlessness and recycling of the salt-containing organic waste liquid. However, since the organic waste liquid containing salt has a large water content and requires a high heat for direct incineration, direct treatment of the waste liquid by the incineration method requires a high combustion temperature, a large amount of auxiliary fuel is required, and the salt solution has a high corrosion to equipment at a high temperature.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a combined device for treating organic waste liquid containing salt, which combines an evaporative crystallization device using Mechanical Vapor Recompression (MVR) technology with a high-temperature melting furnace to form a combined device for treating organic waste liquid containing salt, and the combined device makes full use of waste vapor, recovers latent heat, improves thermal efficiency, and reduces consumption of auxiliary fuel by forming organic waste residue containing salt through evaporative crystallization of organic waste liquid containing salt and then incinerating the organic waste residue containing salt; the combined device burns the organic waste residue containing salt, and has high organic waste removal rate and weak corrosion to equipment.
The second purpose of the invention is to provide the combined process for treating the salt-containing organic waste liquid, so as to remove organic impurities in the salt-containing organic waste liquid.
The first technical scheme adopted by the invention is as follows: the utility model provides a combination unit that contains salt organic waste liquid and handle, includes MVR evaporation crystallization device and high temperature melting furnace, the high temperature melting furnace is equipped with fused salt discharge port and combustor, MVR evaporation crystallization device with the high temperature melting furnace passes through the defeated material systematic connection of feed.
Preferably, the feeding and conveying system comprises a solid salt residue material pit and a bucket elevator.
Preferably, the MVR evaporative crystallization device is also provided with a water treatment system.
Preferably, the MVR evaporative crystallization device comprises a waste liquid preheater, a secondary heat exchanger, an evaporation chamber, a compressor and a circulating pump.
Preferably, the furnace also comprises a heat storage device, and the heat storage device is connected with the high-temperature melting furnace.
Preferably, the heat storage device is connected with a blower and a flue gas purification system.
The second technical scheme adopted by the invention is as follows: the combined process for treating the salt-containing organic waste liquid comprises the following steps:
1) the method comprises the following steps that (1) salt-containing organic waste liquid enters a waste liquid preheater for preheating, enters an evaporation chamber to generate secondary steam, the secondary steam compressed by a compressor enters a secondary heat exchanger to exchange heat with the waste liquid, the waste liquid is circulated under the action of a circulating pump to perform secondary heat exchange, and the salt-containing organic waste liquid is evaporated and crystallized into salt-containing organic waste residues;
2) the salt-containing organic waste residue enters a solid salt residue material pit, and the solid waste residue is transferred into a high-temperature melting furnace through a travelling crane and a bucket elevator matched with the solid salt residue material pit;
3) combustible gas is introduced into the high-temperature melting furnace, the combustible gas is combusted in the combustor to provide heat, so that the organic waste residue is decomposed and combusted in the high-temperature melting furnace, the inorganic salt substance is converted into a molten state, and the molten salt is discharged from a molten salt discharge port and enters a transition chute (8);
4) solid salt in the transition chute (8) is crushed into powder by a double-roller cold rolling mill (9) and a cooling grinder (10) and then recycled;
5) flue gas generated by the high-temperature melting furnace enters a heat storage device for waste heat recovery, and is treated by a flue gas purification device and then discharged;
6) the air blower sends air into the heat storage device, the air exchanges heat in the heat storage device, and the heated air is fed into the high-temperature melting furnace.
Preferably, the temperature in the high temperature melting furnace is >1100 ℃.
Preferably, the temperature of the flue gas in the high-temperature melting furnace is more than or equal to 1100 ℃, and the residence time of the flue gas is more than or equal to 2 s.
Preferably, the combustible gas comprises natural gas.
The beneficial effects of the above technical scheme are that:
(1) and the MVR evaporation crystallization device, the high-temperature melting furnace and the heat storage device are combined to form a combined device for treating the salt-containing organic waste liquid, so that the incineration treatment of the salt-containing organic waste liquid is realized.
(2) The combined device makes full use of waste steam, recovers latent heat, improves heat efficiency, enables the salt-containing organic waste liquid to be evaporated and crystallized into salt-containing organic waste residue and then incinerated, and reduces the consumption of auxiliary fuel.
(3) The combined device has high organic waste removal rate, the waste residue burning removal rate is 99.9 percent by mass, and the combustion efficiency is 99 percent by mass; the thermal ignition loss rate of the incineration melting product is less than or equal to 3 percent by mass.
(4) The high-temperature melting furnace in the combined device directly burns the salt-containing organic waste residues, reduces the corrosivity of salt to the device, and has no mechanical moving part in the furnace and long service life of the device.
(5) The combined device recovers heat in the high-temperature flue gas, recycles energy and improves treatment efficiency.
Drawings
FIG. 1 is a schematic diagram of a combined apparatus for treating organic waste liquid containing salt.
FIG. 2 is a combined process flow diagram for treating a salt-containing organic waste liquid.
Among them are: 1-a waste liquid preheater, 2-a secondary heat exchanger, 3-an evaporation chamber, 4-a compressor, 5-a circulating pump, 6-a high-temperature melting furnace, 7-a heat storage device, 8-a transition chute, 9-a double-roller cold rolling mill, 10-a cooling grinder, 11-a bucket elevator, 12-a solid salt slag material pit, 13-a water treatment system, 14-a storage bin and 15-a blower.
Detailed Description
The present invention is further illustrated by the following specific examples, it should be noted that, for those skilled in the art, variations and modifications can be made without departing from the principle of the present invention, and these should also be construed as falling within the scope of the present invention.
Example 1
As shown in fig. 1, the combined device for treating organic waste liquid containing salt provided by the invention comprises an MVR evaporative crystallization device and a high-temperature melting furnace 6, wherein the high-temperature melting furnace 6 is provided with a molten salt discharge port and a burner, and the MVR evaporative crystallization device and the high-temperature melting furnace 6 are connected through a feed conveying system.
The feeding and conveying system comprises a solid salt residue material pit 12 and a bucket elevator 11.
MVR evaporation crystallization device includes waste liquid preheater 1, secondary heat exchanger 2, evaporating chamber 3, compressor 4 and circulating pump 5.
The salt-containing organic waste liquid enters a waste liquid preheater 1 for preheating, enters an evaporation chamber 3 to generate secondary steam, the enthalpy value of the secondary steam compressed by a compressor 4 is increased, the secondary steam enters a secondary heat exchanger 2 for heat exchange with the waste liquid, the waste liquid is circulated for secondary heat exchange under the action of a circulating pump 5, and the salt-containing organic waste liquid is evaporated and crystallized into salt-containing organic waste residues; the organic waste residue containing salt enters a solid salt residue pit 12, the solid waste residue is transferred into a high-temperature melting furnace 6 through a bucket elevator 11, combustible gas is introduced into the high-temperature melting furnace 6, the combustible gas is combusted in a combustor to enable the temperature in the high-temperature melting furnace 6 to be more than 1100 ℃, the organic waste residue is decomposed and combusted in the high-temperature melting furnace, inorganic salt substances are converted into a molten state, salt in the molten state is discharged through a molten salt discharge port, the temperature of flue gas in the high-temperature melting furnace is more than or equal to 1100 ℃, and the retention time of the flue gas is more.
Combining the MVR evaporation crystallization device and the high-temperature melting furnace to form a combined device, so as to realize incineration treatment of the salt-containing organic waste liquid; the MVR evaporation crystallization device in the combined device makes full use of waste steam, recovers latent heat, improves the heat efficiency, makes salt-containing organic waste liquid evaporated and crystallized into salt-containing organic waste residue and then incinerates the salt-containing organic waste residue, and reduces the consumption of auxiliary fuel; the high-temperature melting furnace ensures that the salt-containing organic waste residue has enough melting space and smoke retention time, the removal rate of the organic waste is high, the burning removal rate reaches 99.9 percent by mass, and the burning efficiency reaches 99 percent by mass; the high-temperature melting furnace has good durability, no mechanical moving parts in the furnace and long service life.
Example 2
As shown in fig. 1, the combined device for treating organic waste liquid containing salt provided by the invention comprises an MVR evaporative crystallization device and a high-temperature melting furnace 6, wherein the high-temperature melting furnace 6 is provided with a molten salt discharge port and a burner, and the MVR evaporative crystallization device and the high-temperature melting furnace 6 are connected through a feed conveying system.
The feeding and conveying system comprises a solid salt residue material pit 12 and a bucket elevator 11.
MVR evaporation crystallization device includes waste liquid preheater 1, secondary heat exchanger 2, evaporating chamber 3, compressor 4 and circulating pump 5.
The combined device for treating the salt-containing organic waste liquid further comprises a heat storage device 7, and the heat storage device 7 is connected with the high-temperature melting furnace 6. The heat storage device 7 is connected with a blower 15 and a flue gas purification system.
As shown in fig. 2, the salt-containing organic waste liquid enters a waste liquid preheater 1 for preheating, enters an evaporation chamber 3 for generating secondary steam, the enthalpy value of the secondary steam compressed by a compressor 4 is increased, the secondary steam enters a secondary heat exchanger 2 for heat exchange with the waste liquid, the waste liquid is circulated for secondary heat exchange under the action of a circulating pump 5, and the salt-containing organic waste liquid is evaporated and concentrated into salt-containing organic waste residues; the salt-containing organic waste residue enters a solid salt residue material pit 12, and the solid waste residue is transferred into a high-temperature melting furnace 6 through a travelling crane matched with the solid salt residue material pit and a bucket elevator 11; introducing combustible gas into the high-temperature melting furnace 6, wherein the combustible gas is combusted in a combustor to ensure that the temperature in the high-temperature melting furnace 6 is more than 1100 ℃, organic waste residues are decomposed and combusted in the high-temperature melting furnace 6, inorganic salt substances are converted into a molten state, molten salt is discharged through a molten salt discharge port, the temperature of flue gas in the high-temperature melting furnace 6 is more than or equal to 1100 ℃, the residence time of the flue gas is more than or equal to 2s, and the flue gas enters a heat storage device 7 for waste heat recovery and is then treated by a flue gas purification device and then discharged; the blower 15 sends air to the heat storage device 7, raises the temperature of the air, and sends the air to the high-temperature melting furnace 6, raises the temperature of the air entering the high-temperature melting furnace 6, and recycles the heat.
Combining the MVR evaporation crystallization device, the high-temperature melting furnace and the heat storage device to form a combined device, so as to realize incineration treatment of the organic waste liquid containing salt; the high-temperature flue gas enters the heat storage device to recover waste heat, the temperature of the flue gas is reduced, the water spraying amount is reduced, the air feeder sends air into the heat storage device to improve the temperature of the air entering the high-temperature melting furnace, the heat is recycled, and the treatment efficiency is improved. The mass percentage of the thermal ignition loss of the incineration melting product is less than or equal to 3 percent, and the secondary pollution prevention measure is adopted to treat the harmful substances generated during the combustion.
Example 3
As shown in fig. 1, the combined device for treating organic waste liquid containing salt provided by the invention comprises an MVR evaporative crystallization device and a high-temperature melting furnace 6, wherein the high-temperature melting furnace 6 is provided with a molten salt discharge port and a burner, and the MVR evaporative crystallization device and the high-temperature melting furnace 6 are connected through a feed conveying system.
The feeding and conveying system comprises a solid salt residue material pit 12 and a bucket elevator 11.
MVR evaporation crystallization device includes waste liquid preheater 1, secondary heat exchanger 2, evaporating chamber 3, compressor 4 and circulating pump 5.
The combined device for treating the salt-containing organic waste liquid further comprises a heat storage device 7, and the heat storage device 7 is connected with the high-temperature melting furnace 6. The heat storage device 7 is connected with a blower 15 and a flue gas purification system.
The combined device for treating the salt-containing organic waste liquid further comprises a recovery device, wherein the recovery device is provided with a transition chute 8, a double-roller cold rolling mill 9, a cooling grinding mill 10 and a storage bin 14.
As shown in fig. 2, the salt-containing organic waste liquid enters a waste liquid preheater 1 for preheating, enters an evaporation chamber 3 for generating secondary steam, the enthalpy value of the secondary steam compressed by a compressor 4 is increased, the secondary steam enters a secondary heat exchanger 2 for heat exchange with the waste liquid, the waste liquid is circulated for secondary heat exchange under the action of a circulating pump 5, and the salt-containing organic waste liquid is evaporated and concentrated into salt-containing organic waste residues; the salt-containing organic waste residue enters a solid salt residue material pit 12, and the solid waste residue is transferred into a high-temperature melting furnace 6 through a travelling crane matched with the solid salt residue material pit and a bucket elevator 11; introducing combustible gas into the high-temperature melting furnace 6, wherein the combustible gas is combusted in a combustor to ensure that the temperature in the high-temperature melting furnace 6 is more than 1100 ℃, organic waste residues are decomposed and combusted in the high-temperature melting furnace 6, inorganic salt substances are converted into a molten state, molten salt enters a transition chute 8 through a molten salt discharge port, solid salt in the transition chute 8 is crushed into powder through a double-roller cold rolling mill 9 and a cooling grinder 10 and then is recycled, the temperature of flue gas in the high-temperature melting furnace 6 is more than or equal to 1100 ℃, the residence time of the flue gas is more than or equal to 2s, and the flue gas enters a heat storage device 7 for waste heat recovery and then is treated by a; the blower 15 sends air to the heat storage device 7, raises the temperature of the air, and sends the air to the high-temperature melting furnace 6, raises the temperature of the air entering the high-temperature melting furnace 6, and recycles the heat.
The MVR evaporation crystallization device, the high-temperature melting furnace and the heat storage device are combined to form a combined device, so that the incineration treatment of the organic waste liquid containing salt and the recovery of solid salt are realized, and the thermal ignition loss rate of the incineration melting product is less than or equal to 3% by mass.
Claims (10)
1. The utility model provides a combination unit who contains salt organic waste liquid and handle, includes MVR evaporation crystallization device and high temperature melting furnace (6), high temperature melting furnace (6) are equipped with fused salt discharge port and combustor, characterized in that, MVR evaporation crystallization device with high temperature melting furnace (6) are through the defeated material systematic connection of feed.
2. A combined apparatus for treating organic waste liquid containing salt according to claim 1, wherein the feed conveying system comprises a solid salt residue pit (12) and a bucket elevator (11).
3. A combined device for treating salt-containing organic waste liquid according to claim 1, wherein the MVR evaporative crystallization device is further provided with a water treatment system (13).
4. The integrated device for treating salt-containing organic waste liquid according to claim 1, wherein the MVR evaporative crystallization device comprises a waste liquid preheater (1), a secondary heat exchanger (2), an evaporation chamber (3), a compressor (4) and a circulating pump (5).
5. An integrated salt-containing organic waste liquid treatment plant according to any one of claims 1 to 4, characterized by further comprising a heat storage device (7), wherein the heat storage device (7) is connected with the high-temperature melting furnace (6).
6. Combined device for treating salt-containing organic waste liquid according to claim 5, characterized in that a blower (15) and a flue gas purification system are connected to the heat storage device (7).
7. The combined process for treating the salt-containing organic waste liquid is characterized by comprising the following steps of:
1) the salt-containing organic waste liquid enters a waste liquid preheater (1) for preheating, enters an evaporation chamber (3) for generating secondary steam, the secondary steam compressed by a compressor (4) enters a secondary heat exchanger (2) for exchanging heat with the waste liquid, the waste liquid is circulated for secondary heat exchange under the action of a circulating pump (5), and the salt-containing organic waste liquid is evaporated and crystallized into salt-containing organic waste residues;
2) the salt-containing organic waste residue enters a solid salt residue material pit (12), and the solid waste residue is transferred into a high-temperature melting furnace (6) through a travelling crane and a bucket elevator (11) matched with the solid salt residue material pit;
3) combustible gas is introduced into the high-temperature melting furnace (6), the combustible gas is combusted in the combustor to provide heat, so that the organic waste residues are decomposed and combusted in the high-temperature melting furnace (6), inorganic salt substances are converted into a molten state, and salt in the molten state is discharged through a molten salt discharge port and enters a transition chute (8);
4) solid salt in the transition chute (8) is crushed into powder by a double-roller cold rolling mill (9) and a cooling grinder (10) and then recycled;
5) flue gas generated by the high-temperature melting furnace (6) enters a heat storage device (7) for waste heat recovery, and is then treated by a flue gas purification device and then discharged;
6) the air blower sends air into the heat storage device (7), the air exchanges heat in the heat storage device (7), and the heated air is fed into the high-temperature melting furnace (6).
8. Integrated process for the treatment of salt-containing organic waste liquids according to claim 7, characterized in that the temperature inside the high temperature melting furnace (6) is >1100 ℃.
9. The integrated process for treating the organic waste liquid containing salt according to claim 7, wherein the temperature of the flue gas in the high-temperature melting furnace (6) is more than or equal to 1100 ℃, and the retention time of the flue gas is more than or equal to 2 s.
10. The integrated process for treating salt-containing organic waste liquid according to claim 7, wherein the combustible gas comprises natural gas.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114838368A (en) * | 2022-04-28 | 2022-08-02 | 淮南中建材腾锋环保科技有限公司 | Device for efficiently removing solid particles in organic waste liquid |
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| CN102168857A (en) * | 2011-04-15 | 2011-08-31 | 中橡集团炭黑工业研究设计院 | High-concentration saliferous organic waste liquid incinerator and incineration technique |
| CN105329959A (en) * | 2015-10-19 | 2016-02-17 | 河北乐恒化工设备制造有限公司 | Organic waste water integrated processing system and method |
| CN108178410A (en) * | 2018-01-08 | 2018-06-19 | 山东特保罗环保节能科技有限公司 | A kind of organic waste water treating device with high salt |
| CN109404923A (en) * | 2018-11-23 | 2019-03-01 | 浙江物华天宝能源环保有限公司 | One kind being suitable for saliferous solid waste high-temperature fusion purification device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114838368A (en) * | 2022-04-28 | 2022-08-02 | 淮南中建材腾锋环保科技有限公司 | Device for efficiently removing solid particles in organic waste liquid |
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Application publication date: 20200410 |