CN215001617U - Contain organic waste liquid resource environmental protection processing system of high nitrogen phosphorus-containing adiponitrile of salt - Google Patents
Contain organic waste liquid resource environmental protection processing system of high nitrogen phosphorus-containing adiponitrile of salt Download PDFInfo
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- CN215001617U CN215001617U CN202121163674.5U CN202121163674U CN215001617U CN 215001617 U CN215001617 U CN 215001617U CN 202121163674 U CN202121163674 U CN 202121163674U CN 215001617 U CN215001617 U CN 215001617U
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Abstract
The utility model provides a contain organic waste liquid resourceization environmental protection processing system of phosphorus-containing adiponitrile of salt high nitrogen, include: the device comprises a U-shaped incineration boiler, a cooling chamber, a high-temperature-resistant flexible metal film bag type gas-solid separator, a quench tower, a filler absorption tower, an alkaline washing tower, a flue gas heater, an SCR (selective catalytic reduction) denitration device, an air preheater, an economizer, a bag-type dust collector, an induced draft fan and a chimney which are sequentially arranged, wherein the U-shaped incineration boiler and the cooling chamber are communicated with a steam drum. The utility model discloses contain the organic waste liquid resource environmental protection processing system of salt high nitrogen phosphorus-containing adiponitrile can realize the resourceization, carries out recycle with heavy metal and inorganic salt in the waste liquid. The utility model discloses possible heavy metal and inorganic salt's coarse separation, the heavy metal is retrieved to incineration boiler bottom, and solid-state salt is retrieved to cooling chamber and high temperature resistant flexible metal film bag gas-solid separator bottom, and the circulation tank is retrieved the crystallization phosphate. The utility model discloses the by-product saturated steam supplies the plant use, can produce the income, realizes energy-conservation.
Description
Technical Field
The utility model relates to a waste liquid resourceful environmental protection processing technology especially relates to a contain organic waste liquid resourceful environmental protection processing system of phosphorus-containing adiponitrile of salt high nitrogen.
Background
Adiponitrile as an important chemical raw material is a colorless and transparent oily liquid, is mainly used for hydrogenation to generate hexamethylene diamine, and the hexamethylene diamine and adipic acid undergo polycondensation to prepare a semitransparent or opaque milky synthetic resin (namely nylon 66) which has good wear resistance, heat resistance, corrosion resistance and mechanical strength, and is the most important industrial application of the adiponitrile so far. Adiponitrile can also be used in rocket fuels, in the electroplating industry, as a detergent additive and as an insecticide. In the past, adiponitrile in China mainly depends on import, the demand of adiponitrile is gradually increased along with the rapid development of chemical industry in China in recent years, and a plurality of adiponitrile production devices are successively built in various places.
The prior process routes for producing adiponitrile mainly comprise an acrylonitrile electrolytic dimerization method, an adipic acid catalytic ammoniation method, a butadiene method and the like. However, in the production process of the three process routes, organic waste liquid is generated to different degrees, mainly intermediate products, catalysts and additives generated by side reactions, mainly including butenenitrile, pentenenitrile, trimethylphenylphosphite, methylglutaronitrile, m-cresol, heavy metal catalysts, inorganic salts, other impurities and the like. The waste liquid has more organic matter content and most of the waste liquid is toxic, and if the waste liquid is directly discharged, the waste liquid can be continuously accumulated and stored in natural environments such as water, soil and the like, and then enters human bodies to harm the health of the human bodies. Due to biodegradation, the high-concentration organic waste liquid discharged into the water body can cause the receiving water body to be anoxic and even anaerobic, most aquatic organisms die, stink is generated, and the water quality and the environment are deteriorated. Heavy metals in the waste liquid enter the environment, are not easy to be metabolized in the environment, are easy to be biologically enriched, not only pollute the environment, but also seriously threaten the survival of human beings and aquatic organisms. Excessive intake of heavy metals in humans can lead to various diseases, such as cancer and malformation.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to the above-mentioned problem, provide a contain organic waste liquid resource environmental protection processing system of phosphorus-containing adiponitrile of salt high nitrogen, this system can realize the resourceization, carries out recycle with the heavy metal in the waste liquid and salt.
In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a contain organic waste liquid resource environmental protection processing system of high nitrogen phosphorus-containing adiponitrile of salt, includes: the device comprises a U-shaped incineration boiler, a cooling chamber, a high-temperature-resistant flexible metal film bag type gas-solid separator, a quench tower, a filler absorption tower, an alkaline washing tower, a flue gas heater, an SCR (selective catalytic reduction) denitration device, an air preheater, an economizer, a bag-type dust collector, an induced draft fan and a chimney which are sequentially arranged, wherein the U-shaped incineration boiler and the cooling chamber are communicated with a steam drum.
Furthermore, the U-shaped incineration boiler and a cooling chamber with an L-shaped hanging screen heating surface arranged inside are in an inverted U shape, and the U-shaped incineration boiler is connected with the top of the cooling chamber with the L-shaped hanging screen heating surface arranged inside through a connecting flue;
furthermore, one side of the U-shaped incineration boiler is a gasification chamber, and the other side of the U-shaped incineration boiler is a high-temperature incineration chamber, wherein the gasification chamber and the high-temperature incineration chamber are separated by a membrane water-cooled wall partition wall; the bottom end of the gasification chamber is connected with the bottom end of the high-temperature incineration chamber through a flue gas diversion chamber, the bottom of the flue gas diversion chamber is provided with a first ash falling outlet, and the first ash falling outlet is connected with a double-shaft cooler and a water-cooled scraper conveyor at one time through a pipeline; a combined burner is arranged at the top of the gasification chamber; one side of U type incineration boiler carries out the schizolysis gasification to the organic high nitrogen of adiponitrile phosphorus containing salt waste liquid, and the opposite side carries out the low nitrogen burning that the high temperature was burnt to the schizolysis gasification gas, and this mode has avoided direct combustion and has produced a large amount of nitrogen oxides, for flue gas back level environmental protection denitration treatment has reduced equipment investment and working costs by a wide margin, makes entire system have more economic nature. The combined burner is respectively communicated with a primary fan combustion-supporting air pipeline, a natural gas pipeline and a waste liquid buffer tank. Specifically, the combustion-supporting air pipeline is communicated with the combined combustor through a primary air fan; and the waste liquid buffer tank is communicated with a waste liquid spray gun of the combined combustor through a waste liquid booster pump.
Further, the middle part of the hearth of the U-shaped incineration boiler is communicated with a secondary fan.
Furthermore, the U-shaped incineration boiler is of a membrane wall structure, is lined with refractory castable, can prevent heavy metal from wearing the membrane wall, can reduce the heat absorption capacity of the membrane wall, is favorable for maintaining the temperature in the incineration boiler, and can effectively avoid P generated by combustion2O5Phosphoric acid is formed on the metal wall surface to corrode the metal heating surface.
Further, U type incineration boiler bottom ash bucket and first cylinder cooler intercommunication, first cylinder cooler and the first scraper conveyor intercommunication of water-cooled send the heavy metal in the waste liquid to the packing workshop and pack and store.
Furthermore, the cooling chamber is of a film type wall structure, and a film type wall hanging screen heating surface is arranged in the cooling chamber.
Furthermore, two ends of a connecting flue of the incineration boiler and the cooling chamber are both provided with a dilution pipe as a slag condensing pipe bundle, and particulate matters in the flue gas are efficiently collected.
Furthermore, the heating surface of the membrane type wall hanging screen arranged in the cooling chamber consists of a plurality of groups of membrane type wall tube screens, and a closed circulation loop is formed by the membrane type wall tube screens and the boiler steam drum through pipelines.
Furthermore, an inlet of the cooling chamber is provided with an SNCR spray gun, and the ammonia water buffer tank is communicated with the SNCR spray gun through an SNCR ammonia water spray pump.
Furthermore, a steam-water separation device is arranged in the steam pocket, a saturated steam outlet of the steam pocket is communicated with a steam-distributing cylinder, and an outlet of the steam-distributing cylinder is respectively communicated with a thermal deaerator and a steam pipe network.
Further, the thermal deaerator is communicated with a refrigerant inlet of the economizer through a boiler water feeding pump, and a refrigerant outlet of the economizer is communicated with the steam pocket.
Further, the flue gas inlet of the high-temperature-resistant flexible metal film bag type gas-solid separator is communicated with the flue gas outlet of the cooling chamber; the flue gas outlet of the high-temperature resistant flexible metal film bag type gas-solid separator is communicated with the flue gas inlet of the quench tower; and the ash falling port of the high-temperature-resistant flexible metal film bag type gas-solid separator is communicated with the water-cooled second scraper conveyor.
Further, the recycling and environment-friendly treatment system for the salt-containing high-nitrogen phosphorus-containing adiponitrile organic waste liquid also comprises a circulating pool, wherein a circulating cooling water coil is arranged in the circulating pool and is communicated with a plant circulating cooling water pipeline; the shell pass of the circulating pool is communicated with a quenching tower through a quenching tower spray pump; and the shell pass of the circulating tank is communicated with the filler absorption tower through an absorption tower spray pump.
Furthermore, the filler is arranged in the filler absorption tower, and the spraying layer is arranged on the filler layer.
Further, a storage tank is arranged at the lower part of the alkaline tower, alkaline liquor is prepared in the storage tank, and the storage tank is communicated with the alkaline tower through an alkaline tower spray pump.
Furthermore, two layers of folded plate demisters are arranged at the top of the alkaline washing tower, so that large-particle liquid drops carried in the flue gas can be collected, and the operating conditions of subsequent devices are improved.
Further, SCR denitrification facility entry sets up the aqueous ammonia spray gun, and the aqueous ammonia buffer tank sends into static mixer through SCR aqueous ammonia spray pump, static mixer export and aqueous ammonia spray gun intercommunication.
The utility model discloses contain the organic waste liquid resource environmental protection processing system of phosphorus-containing adiponitrile of salt high nitrogen, compare with prior art and have following advantage:
1) the utility model discloses can realize the resourceization, carry out recycle with heavy metal and salt in the waste liquid.
2) The utility model discloses possible heavy metal and the crude separation of salt, heavy metal is retrieved to incineration boiler bottom, and solid-state salt is retrieved to the cooling chamber bottom, and the circulation tank is retrieved the crystallization phosphate.
3) The utility model discloses thereby not only adopt the pyrolysis gasification mode to make organic nitrogen turn into the nitrogen gas pattern in the waste liquid and reach the denitration purpose, the combustible gas that produces organic waste liquid pyrolysis gasification reduces high temperature combustion through supplementary air and control combustion temperature in 1100 and thin 1150 ℃ pattern and produces NOx to reach the denitration, reduce the consumption of aqueous ammonia, reduce the working costs.
4) The utility model discloses the by-product saturated steam can produce the income.
Drawings
FIG. 1 is a schematic structural diagram of a recycling environmental protection treatment system for a salt-containing high-nitrogen phosphorus-containing adiponitrile organic waste liquid;
FIG. 2 is a flow chart of a recycling environmental protection treatment system for a salt-containing high-nitrogen phosphorus-containing adiponitrile organic waste liquid.
Sequence number and name:
1. an incineration boiler; 2. a cooling chamber; 3. a high-temperature resistant flexible metal film bag type gas-solid separator; 4. a quench tower; 5. a packed absorption column; 6. an alkaline washing tower; 7. a flue gas heater; 8. an SCR denitration device; 9. an air preheater; 10. a coal economizer; 11. a bag-type dust collector; 12. an induced draft fan; 13. a chimney; 14. a steam drum; 15. a cylinder is divided; 16. a thermal deaerator; 17. a waste liquid buffer tank; 18. an ammonia buffer tank; 19. a first scraper conveyor; 20. a second scraper conveyor; 21. a first drum cooler; 22. a second drum cooler; 23. a primary air fan; 24. a secondary air fan; 25. a flue gas heater fan; 26. a waste liquid booster pump; 27. a boiler feed pump; 28. a quench tower spray pump; 29. an absorption tower spray pump; 30. a spray pump of the alkaline washing tower; 31. a first SCR ammonia water spray pump; 32. SNCR aqueous ammonia spraying pump.
Detailed Description
The invention is further illustrated below with reference to the following examples:
example 1
The embodiment discloses an organic waste liquid resource environmental protection processing system of phosphorus-containing adiponitrile that contains salt high nitrogen, as shown in fig. 1-2, organic waste liquid resource environmental protection processing system of phosphorus-containing adiponitrile that contains salt high nitrogen includes: the device comprises a U-shaped incineration boiler 1, a cooling chamber 2, a high-temperature-resistant flexible metal film bag type gas-solid separator 3, a quench tower 4, a filler absorption tower 5, an alkaline washing tower 6, a flue gas heater 7, an SCR (selective catalytic reduction) denitration device 8, an air preheater 9, an economizer 10, a bag-type dust remover 11, an induced draft fan 12 and a chimney 13 which are sequentially arranged, wherein the U-shaped incineration boiler 1 and the cooling chamber 2 are communicated with a steam drum 14.
One side of U type incineration boiler 1 carries out the schizolysis gasification to the organic high nitrogen of adiponitrile phosphorus containing salt waste liquid, and the low nitrogen combustion mode that the opposite side carries out high temperature to the schizolysis gasification gas and burns has avoided direct combustion and has produced a large amount of nitrogen oxides, for flue gas back level environmental protection denitration treatment has reduced equipment investment and working costs by a wide margin, makes entire system have more economic nature. The U-shaped incineration boiler 1 is of a membrane wall structure, and is lined with refractory castable, so that the membrane wall can be prevented from being abraded by heavy metal, the heat absorption capacity of the membrane wall can be reduced, and the temperature in the incineration boiler can be maintained. The top of the U-shaped incineration boiler 1 is provided with a combined burner; the combined burner is respectively communicated with a combustion-supporting air pipeline, a natural gas pipeline and a waste liquid buffer tank 17. Specifically, the combustion-supporting air pipeline is communicated with the combined burner through a primary air fan 23; the waste liquid buffer tank 17 is communicated with a waste liquid spray gun of the combined burner through a waste liquid booster pump 26. The middle part of the hearth of the U-shaped incineration boiler 1 is communicated with a secondary fan 24. The bottom ash bucket of the U-shaped incineration boiler 1 is communicated with a water-cooled first scraper conveyor 19, and heavy metals in waste liquid are sent to a packing workshop to be packed and stored.
The cooling chamber 2 is of a membrane wall structure. An inlet of the cooling chamber 2 is provided with an SNCR spray gun, and the ammonia water buffer tank 18 is communicated with the SNCR spray gun through an SNCR ammonia water spray pump 32.
A steam-water separation device is arranged in the steam drum 14, a saturated steam outlet of the steam drum 14 is communicated with a steam distributing cylinder 15, and an outlet of the steam distributing cylinder 15 is respectively communicated with a thermal deaerator 16 and a steam pipe network. The thermal deaerator 16 is communicated with a refrigerant inlet of the economizer 10 through a boiler water feeding pump 27, and a refrigerant outlet of the economizer 10 is communicated with the steam drum 14.
The flue gas inlet of the high-temperature resistant flexible metal film bag type gas-solid separator is communicated with the flue gas outlet of the cooling chamber; the flue gas outlet of the high-temperature resistant flexible metal film bag type gas-solid separator is communicated with the flue gas inlet of the quench tower; the ash falling port of the high-temperature resistant flexible metal film bag type gas-solid separator is communicated with a water-cooled second scraper conveyor 20.
The recycling and environment-friendly treatment system for the salt-containing high-nitrogen phosphorus-containing adiponitrile organic waste liquid also comprises a circulating pool, wherein a circulating cooling water coil is arranged in the circulating pool and is communicated with a plant circulating cooling water pipeline; the shell pass of the circulating pool is communicated with a quenching tower 4 through a quenching tower spray pump 28; the shell side of the circulating tank is communicated with the filler absorption tower 5 through an absorption tower spray pump 29.
The filler absorption tower 5 is internally provided with a filler, and the filler layer is provided with a spraying layer.
The lower part of the alkaline tower 6 is provided with a storage tank, alkaline liquor is prepared in the storage tank, and the storage tank is communicated with the alkaline tower 6 through an alkaline tower spray pump 30. Two layers of folded plate demisters are arranged at the top of the alkaline tower 6, so that large-particle liquid drops carried in flue gas can be collected, and the running conditions of subsequent devices are improved.
An inlet of the SCR denitration device 8 is provided with an ammonia water spray gun, the ammonia water buffer tank 18 is fed into the static mixer through a first SCR ammonia water spray pump 31, and an outlet of the static mixer is communicated with the ammonia water spray gun.
The utility model discloses contain the technological process of salt high nitrogen phosphorus-containing adiponitrile organic waste liquid resourceization environmental protection processing system:
organic waste liquid is sent to waste liquid buffer tank 17 at first and is kept in, and stable flow and pressure are then sent to the combination combustor waste liquid spray gun through waste liquid booster pump 26 pressurization, spout into U type incineration boiler 1 through pressure atomization or medium atomization, and the natural gas is sent to the combination combustor through the pipeline simultaneously, and combustion-supporting wind is sent to the combination combustor by primary air fan 23. Most of organic components in the adiponitrile waste liquid contain nitrogen elements, if a conventional combustion mode is adopted, the nitrogen elements in the waste liquid are converted into nitrogen oxides by 15% -30%, a multistage denitration device needs to be arranged subsequently, the equipment investment is increased, a large amount of ammonia water is consumed, and the operating cost is increased. This system adopts low nitrogen combustion mode, and hierarchical air feed, primary air fan only supply partial air, are the oxygen deficiency burning in the furnace, owing to lack of oxygen, only very little nitrogen element is oxidized into nitrogen oxide. The organic matter is deficient in oxygen and cannot be completely combusted to produce carbon monoxide, hydrogen, methane, and the like. The secondary air is supplemented at a proper position of the hearth and is provided by the secondary fan 24, and the supplemented air reacts with the incompletely combusted carbon monoxide, hydrogen and methane to burn off the organic matters. Most of organic matters in the waste liquid are converted into nitrogen gas during oxygen-deficient combustion, and fuel type nitrogen oxides cannot be generated although oxygen is sufficient during secondary air supplement. The incineration boiler is of a membrane wall structure, and is lined with refractory castable, so that the membrane wall can be prevented from being abraded by heavy metal, the heat absorption capacity of the membrane wall can be reduced, and the temperature in the incineration boiler can be maintained. Heavy metals in the waste liquid fall from an ash hopper at the bottom of the U-shaped incineration boiler 1, enter a first roller cooler 21 for cooling, enter a water-cooled first scraper conveyor 19 for conveying to a packing workshop for packing and storing.
The temperature of the flue gas at the outlet of the U-shaped incineration boiler 1 is not lower than 1100 ℃ by controlling the combustion amount of natural gas, and then the flue gas enters the cooling chamber 2. The cooling chamber 2 is of a membrane wall structure, high-temperature flue gas exchanges heat with furnace water in a membrane wall pipe in the cooling chamber 2 to generate a steam-water mixture, the steam-water mixture is sent to a steam drum 14 through a lead-out pipe, a steam-water separation device is arranged in the steam drum, the separated saturated steam is sent to a steam-separating cylinder 15 through a pipeline and is divided into two streams, one stream is sent to a thermal deaerator 16, and the other stream is sent to a steam pipe network. The flue gas is cooled to 500-600 ℃ in the cooling chamber 2, salts carried in the flue gas fall from an ash hopper at the bottom of the cooling chamber 2 and enter a second roller cooler 22, and the cooled salts enter a water-cooled second scraper conveyor 20 and are conveyed to a packing workshop for packing and storage. An SNCR spray gun is arranged at the inlet of the cooling chamber 2, ammonia water is sent to the ammonia water buffer tank 18 through a pipeline and is sent to the SNCR spray gun through an SNCR ammonia water spray pump 32, and the ammonia water is sprayed into flue gas to reduce nitrogen oxides into nitrogen. The desalted water is sent to a thermal deaerator 16 through a pipeline, is sent to the economizer 10 through a boiler water feed pump 27 after being deaerated, is sent to a steam pocket 14 after being preheated in the economizer 10, is distributed to heating surfaces of the U-shaped incineration boiler 1 and the cooling chamber 2 through a downcomer and exchanges heat with high-temperature flue gas to generate a steam-water mixture.
The flue gas enters the high-temperature-resistant flexible metal film bag type gas-solid separator 3 from the outlet of the cooling chamber 2 through the flue, salts carried in the flue gas are supplemented again by the high-temperature-resistant flexible metal film bag type gas-solid separator 3 to fall into the water-cooled second scraper conveyor 20, and the flue gas is sent out of the boundary area to be packed.
Phosphorus element in the waste liquid generates phosphorus pentoxide in the incineration process, the melting point is 340 ℃, the boiling point is 360 ℃, and the phosphorus element is still in a gaseous state at the outlet position of the cooling chamber 2. The flue gas enters a quench tower 4 from an outlet of a high-temperature resistant flexible metal film bag type gas-solid separator 3 through a flue, circulating liquid is extracted from a circulating pool through a quench tower spray pump 28 and atomized and then sprayed into the quench tower 4, the circulating liquid is evaporated and absorbs heat in the high-temperature flue gas, the temperature of the flue gas is reduced to be below 200 ℃ within the time of less than 1s, and the generation of dioxin substances is restrained. The flow or the quantity of the spray pump 28 of the quenching tower is adjusted, and the temperature of the flue gas at the outlet of the quenching tower 4 is controlled to be lower than 80 ℃. At the moment, phosphorus pentoxide in the flue gas is dissolved in hot water to generate orthophosphoric acid, and the orthophosphoric acid flows back into the circulating pool. Flue gas from the quench tower 4 enters a filler absorption tower 5, filler is arranged in the tower, a spray layer is arranged on the filler layer, and circulating liquid is extracted from a circulating pool by an absorption tower spray pump 29 and sprayed into the filler absorption tower 5 after being atomized. The filler increases the contact area of the flue gas and the circulating liquid, and phosphorus pentoxide escaping from the quenching tower 4 along with the flue gas can be supplemented to generate orthophosphoric acid which flows back to the circulating pool. The reaction formula for the reaction of phosphorus pentoxide with water to form orthophosphoric acid is as follows:
P2O5+3H2o (hot) → 2H3PO4+ Heat quantity
Adding alkali liquor into a circulating pool, neutralizing phosphoric acid into sodium phosphate, precipitating crystals after the concentration of the sodium phosphate is saturated, fishing out and recycling the sodium phosphate crystals, wherein circulating liquid can be circulated all the time, and the system does not generate deacidification waste liquid in principle. The neutralization reaction formula is as follows:
H3PO4+3NaOH＝Na3PO4+3H2O
and a circulating cooling water coil is arranged in the circulating pool, and plant circulating cooling water is adopted to cool the circulating liquid in the circulating pool, so that the temperature of the circulating liquid is lower than 60 ℃.
The flue gas enters an alkaline washing tower 6 after coming out of the filler absorption tower, a storage tank is arranged at the lower part of the alkaline washing tower 6, alkaline liquor is prepared in the storage tank, the alkaline liquor in the storage tank is extracted by an alkaline washing tower spray pump 30 for spraying, escaped phosphorus pentoxide and other acidic gases are supplemented, and the flue gas is discharged up to the standard. And (3) discharging the circulating liquid into a neutralization tank after the liquid level in a storage tank at the lower part of the alkaline tower 6 rises or the PH of the circulating liquid drops to a set value, and preparing the alkaline liquor again. Two layers of folded plate demisters are arranged at the top of the alkaline tower 6, large particle liquid drops carried in the flue gas are collected, and the running conditions of subsequent devices are improved.
After flue gas is through low nitrogen burning and SNCR denitration two-stage denitration, in order to guarantee that nitrogen oxide discharges up to standard, set up SCR denitrification facility 8. The flue gas enters a flue gas heater 7 after coming out of the alkaline tower 6, the temperature of the flue gas is raised to about 220 ℃ by burning natural gas, and then the flue gas enters an SCR denitration device 8. Air required by combustion is provided by the smoke heater fan 25, and is heated by the air preheater 9 to participate in combustion, so that the consumption of natural gas of the smoke heater 7 can be saved. The 8 entrances of SCR denitrification facility set up the aqueous ammonia spray gun, and required aqueous ammonia is sprayed pump 31 and is extracted from aqueous ammonia buffer tank 18 by the SCR aqueous ammonia, adds water through static mixer and dilutes to and spray into the flue gas behind the required concentration, reacts with the nitrogen oxide in the flue gas under the effect of catalyst, reduces nitrogen oxide into nitrogen gas.
The flue gas passes through air heater 9 and economizer 10 in proper order after coming out from SCR denitrification facility 8, further reduces the temperature and retrieves the heat, then goes into sack cleaner 11, mends the particulate matter that carries in the flue gas and collects, sends chimney 13 through draught fan 12 at last and discharges in the atmosphere. At the moment, heavy metal, salt, acid gas and nitrogen oxide in the flue gas can all meet the national standard.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. The utility model provides a contain organic waste liquid resource environmental protection processing system of high nitrogen phosphorus-containing adiponitrile of salt which characterized in that includes: u type incineration boiler (1), cooling chamber (2), high temperature resistant flexible metal film bag-type gas-solid separator (3), quench tower (4), filler absorption tower (5), alkaline tower (6), flue gas heater (7), SCR denitrification facility (8), air heater (9), economizer (10), sack cleaner (11), draught fan (12) and chimney (13) that set up in order, U type incineration boiler (1) and cooling chamber (2) and steam pocket (14) intercommunication.
2. The recycling and environment-friendly treatment system for the organic waste liquid containing salt, high nitrogen and phosphorus adiponitrile according to claim 1, wherein the U-shaped incineration boiler (1) and the cooling chamber (2) with the built-in L-shaped hanging screen heating surface are in an inverted U shape, and the U-shaped incineration boiler (1) and the top of the cooling chamber (2) with the built-in L-shaped hanging screen heating surface are connected through a connecting flue.
3. The recycling and environment-friendly treatment system for the organic waste liquid containing salt, high-nitrogen and phosphorus-containing adiponitrile according to claim 1 or 2, wherein one side of the U-shaped incineration boiler (1) is a gasification chamber, and the other side of the U-shaped incineration boiler is a high-temperature incineration chamber, and the gasification chamber and the high-temperature incineration chamber are separated by a membrane water wall partition wall; a combined burner is arranged at the top of the gasification chamber and is respectively communicated with a primary fan (23) combustion-supporting air pipeline, a natural gas pipeline and a waste liquid buffer tank (17); the middle part of the hearth of the U-shaped incineration boiler (1) is communicated with the secondary fan (24).
4. The recycling and environment-friendly treatment system for the organic waste liquid containing high-nitrogen and phosphorus-containing adiponitrile according to claim 1, wherein an SNCR spray gun is arranged at an inlet of the cooling chamber (2), and the ammonia water buffer tank (18) is communicated with the SNCR spray gun through an SNCR ammonia water spray pump (32).
5. The recycling and environment-friendly treatment system for the organic waste liquid containing salt, high-nitrogen and phosphorus-containing adiponitrile according to claim 1, characterized in that a steam-water separation device is arranged in the steam drum (14), a saturated steam outlet of the steam drum (14) is communicated with the steam distributor (15), and an outlet of the steam distributor (15) is respectively communicated with the thermal deaerator (16) and the steam pipe network.
6. The recycling and environment-friendly treatment system for the organic waste liquid containing salt, high-nitrogen and phosphorus-containing adiponitrile according to claim 5, wherein the thermal deaerator (16) is communicated with a refrigerant inlet of the economizer (10) through a boiler water feed pump (27), and a refrigerant outlet of the economizer (10) is communicated with the steam drum (14).
7. The recycling and environment-friendly treatment system for the organic waste liquid containing high-nitrogen and phosphorus-containing adiponitrile according to claim 1, which comprises a high-temperature-resistant flexible metal film bag type gas-solid separator (3), wherein a flue gas inlet of the high-temperature-resistant flexible metal film bag type gas-solid separator (3) is communicated with a flue gas outlet of the cooling chamber (2); the flue gas outlet of the high-temperature resistant flexible metal film bag type gas-solid separator (3) is communicated with the flue gas inlet of the quenching tower (4); and an ash falling port of the high-temperature-resistant flexible metal film bag type gas-solid separator (3) is communicated with a water-cooled second scraper conveyor (20).
8. The recycling and environment-friendly treatment system for the organic waste liquid containing high-nitrogen phosphorus-containing adiponitrile according to claim 1, which comprises a circulating pool, wherein a circulating cooling water coil is arranged in the circulating pool, and the circulating cooling water coil is communicated with a plant circulating cooling water pipeline; the shell pass of the circulating pool is communicated with a quenching tower (4) through a quenching tower spray pump (28); the shell side of the circulating tank is communicated with the filler absorption tower (5) through an absorption tower spray pump (29).
9. The recycling and environment-friendly treatment system for the organic waste liquid containing the high-nitrogen phosphorus-containing adiponitrile according to claim 1, wherein a storage tank is arranged at the lower part of the alkaline tower (6), alkaline liquor is prepared in the storage tank, and the storage tank is communicated with the alkaline tower (6) through an alkaline tower spray pump (30).
10. The recycling and environment-friendly treatment system for the organic waste liquid containing high-nitrogen phosphorus-containing adiponitrile according to claim 1, wherein an ammonia water spray gun is arranged at an inlet of the SCR denitration device (8), the ammonia water buffer tank (18) is fed into a static mixer through an SCR ammonia water spray pump (31), and an outlet of the static mixer is communicated with the ammonia water spray gun.
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| CN202121163674.5U CN215001617U (en) | 2021-05-28 | 2021-05-28 | Contain organic waste liquid resource environmental protection processing system of high nitrogen phosphorus-containing adiponitrile of salt |
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| CN202121163674.5U CN215001617U (en) | 2021-05-28 | 2021-05-28 | Contain organic waste liquid resource environmental protection processing system of high nitrogen phosphorus-containing adiponitrile of salt |
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| CN215001617U true CN215001617U (en) | 2021-12-03 |
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| CN202121163674.5U Active CN215001617U (en) | 2021-05-28 | 2021-05-28 | Contain organic waste liquid resource environmental protection processing system of high nitrogen phosphorus-containing adiponitrile of salt |
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2021
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