CN106242649B - Device and method for treating and recovering impurities from chemical fertilizer sewage - Google Patents
Device and method for treating and recovering impurities from chemical fertilizer sewage Download PDFInfo
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- CN106242649B CN106242649B CN201610806844.4A CN201610806844A CN106242649B CN 106242649 B CN106242649 B CN 106242649B CN 201610806844 A CN201610806844 A CN 201610806844A CN 106242649 B CN106242649 B CN 106242649B
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- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
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Abstract
The invention belongs to a device for treating and recovering impurities in chemical fertilizer sewage and a recovery method thereof; the system comprises a raw water system, wherein the raw water system is connected with a reclaimed water recycling device through a desalted water device, a fertilizer production system, a desalted water device drain outlet and a reclaimed water recycling device drain outlet are respectively connected with a spiral solid-liquid separator, a liquid outlet of the spiral solid-liquid separator is connected with a water inlet of the reclaimed water recycling device, and a water outlet of the reclaimed water recycling device is connected with a water inlet of the fertilizer production system; the solid outlet of the spiral solid-liquid separator is sequentially connected with a lifting machine, a tube pass of a dryer, a scraper conveyor, a belt scale and a mill feed inlet through a drying device, the mill is connected with an analyzer, and the analyzer is connected with a finished product bin through a cyclone dust collector; the device has the advantages of simple structure, reasonable design, low operation cost, recycling of solid waste generated in the water treatment process on the premise of ensuring no pollution of the environment, realization of circular economy and environmental protection.
Description
Technical Field
The invention belongs to the technical field of chemical fertilizer sewage treatment, and particularly relates to a device and a method for treating and recovering impurities in chemical fertilizer sewage.
Background
In the water treatment industry and other water use industries, a water treatment process is designed, aiming at some solid wastes generated in the water treatment process, the part of the solid wastes do not contain heavy metal substances, although the influence on environmental pollution is not particularly serious, the part of the wastes are directly stacked in the past, raised dust is generated to cause certain influence on the environment, the direct stacking is no longer possible along with the increase of the national environmental regulation, the treatment of the part of the solid wastes becomes a difficult problem which troubles various enterprises, particularly, the water consumption of fertilizer enterprises is large, if the solid wastes cannot be timely recycled, a large amount of water resources are wasted, the solid wastes in the waste water cannot be timely recycled, and the production cost of the enterprises is invisibly increased while the influence on the environment is caused.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a device for recovering impurities in fertilizer sewage treatment and a recovery method thereof, wherein the device has the advantages of simple structure, reasonable design and low operation cost, recovers solid wastes generated in the water treatment process on the premise of ensuring that the environment is not polluted, and realizes circular economy and environmental protection.
The purpose of the invention is realized as follows: the system comprises a raw water system, wherein the raw water system is connected with a reclaimed water recycling device through a desalted water device, a fertilizer production system, and the reclaimed water recycling device; a solid outlet of the spiral solid-liquid separator is sequentially connected with a lifting machine, a tube pass of a dryer, a scraper conveyor, a belt scale and a feed inlet of a mill through a drying device, the mill is connected with an analyzer arranged at the top of the mill, the analyzer is connected with an inlet of a cyclone dust collector through a pipeline, an outlet of the cyclone dust collector is connected with a finished product bin, and a material recovery port of the cyclone dust collector is connected with an inlet at the bottom of the mill through a fan; the steam system links to each other with the import of desiccator shell side and the import of air heat exchanger shell side respectively through first tee bend, the export of desiccator shell side and the export of air heat exchanger shell side link to each other with the condensate system respectively, the import of air heat exchanger tube side links to each other with the atmosphere, the export of air heat exchanger tube side links to each other with the tube side of desiccator, the tube side end of desiccator is equipped with dry dust removal mouth, dry dust removal mouth passes through the dust remover and the draught fan links to each other with the atmosphere, the dust removal recovery mouth that sets up on the dust remover links to each other with the import of scraping the trigger.
Preferably, the finished product bin is connected with the packing machine through a second tee joint, and a third end of the second tee joint is connected with the compound fertilizer production device through a bin pump.
Preferably, a first self-regulating valve is arranged between the first tee joint and the inlet of the shell pass of the dryer, and a second self-regulating valve is arranged between the first tee joint and the inlet of the shell pass of the air heat exchanger.
Preferably, the induced draft fan is provided with an atmosphere pipeline connected with the atmosphere, and the atmosphere pipeline is provided with a third self-regulating valve.
Preferably, a fourth self-regulating valve is arranged between the second tee joint and the packaging machine, and a fifth self-regulating valve is arranged between the third end of the second tee joint and the bin pump.
Preferably, the drying device is a natural drying yard or a dryer.
A recovery method of a device for treating and recovering impurities in chemical fertilizer sewage comprises the following steps:
the method comprises the following steps: the primary water in the raw water system enters a fertilizer production system through a desalted water device for use, the waste water used in the fertilizer production system enters a reclaimed water recycling device through a water inlet of the reclaimed water recycling device for purification treatment, the impurities after the purification treatment enter a spiral solid-liquid separator through a sewage outlet of the reclaimed water recycling device, the impurities in the desalted water device enter the spiral solid-liquid separator through a sewage outlet of the desalted water device, and the qualified water after the purification treatment enters the fertilizer production system through a water outlet of the reclaimed water recycling device and a water inlet of the fertilizer production system for reuse;
step two: after the impurities subjected to purification treatment and the impurities in the desalted water device in the step one enter the spiral solid-liquid separator, the spiral solid-liquid separator is used for carrying out solid-liquid separation, the liquid subjected to solid-liquid separation enters the reclaimed water recycling device through a liquid outlet of the spiral solid-liquid separator and a water inlet of the reclaimed water recycling device, and purification treatment is carried out again; the solid material after solid-liquid separation enters a drying device through a solid outlet of a spiral solid-liquid separator, and the drying device is a natural drying yard or a dryer; the moisture content of the solid material after passing through the drying device is less than 15 percent;
step three: the solid material with the moisture content of less than 15 percent in the second step enters a tube pass of a dryer through a lifter to be dried; the temperature of the solid material at the inlet of the tube side of the dryer is normal temperature, and the moisture content is less than 15%; the temperature of the solid material at the tube pass outlet of the dryer is 70 ℃, and the water content is 5%;
step four: solid materials at the outlet of the tube pass of the dryer in the third step sequentially pass through a scraper and a belt weigher to enter a mill for grinding, the ground materials enter an analyzer at the top of the mill, the analyzer is used for selecting powder, the granularity of a finished product is controlled within the range of 50-300 meshes by changing the frequency of the analyzer, the materials with qualified granularity enter a cyclone dust collector from the outlet of the analyzer, and the materials with unqualified granularity return to the mill through the analyzer for continuous grinding; the amount of solid materials in the mill can be adjusted by a belt scale;
step five: separating the materials with qualified granularity entering the cyclone dust collector in the fourth step by the cyclone dust collector, and then feeding the separated solid materials into a finished product bin; the separated gas enters the mill from the inlet at the bottom of the mill to form circulating air;
step six: the solid materials entering the finished product bin in the step five can be sold as auxiliary materials or finished products for producing the compound fertilizer according to actual conditions, when the solid materials need to be used as the auxiliary materials for producing the compound fertilizer, the fifth self-regulating valve is opened, and the bin pump is started, so that the solid materials enter the compound fertilizer production device; when the solid materials are required to be sold for the outside as finished products, the fourth self-adjusting valve is opened, and the solid materials enter a packaging machine to be packaged and sold for the outside; when the fertilizer needs to be used as an auxiliary material for producing the compound fertilizer and a finished product for sale, the opening degree of the fifth self-regulating valve and the opening degree of the fourth self-regulating valve can be regulated; the solid material entering the finished product bin is 50-300 meshes of white dry soil;
step seven: steam with the pressure of 0.5MPa and the temperature of 158 ℃ in the steam system is respectively in the shell pass of the dryer and the shell pass of the air heat exchanger through a first tee joint, and the steam entering the shell pass of the dryer is used as a heat source of the dryer to exchange heat with solid materials in the tube pass of the dryer and then enters a condensate system; the steam entering the shell pass of the air heat exchanger exchanges heat with the air in the tube pass of the air heat exchanger, the air in the tube pass of the air heat exchanger is heated to 130 ℃, the hot air at 130 ℃ enters the tube pass of the dryer to take away the dusty air generated after the solid material in the tube pass of the dryer generates water vapor, the hot air and the dusty air enter the dust remover to carry out solid-gas separation, the solid material after the solid-gas separation enters the first scraper blade machine through the dust removal recovery port, and the waste gas after the solid-gas separation is discharged into the atmosphere through the induced draft fan; the dust content of the waste gas discharged into the atmosphere is not higher than 20mg/Nm3(ii) a The temperature of the waste gas is 80 ℃;
step eight: when the moisture content of the solid material at the outlet of the tube pass of the dryer is 3 percent, the opening degree of the first self-regulating valve is adjusted to be small, and when the moisture content of the solid material at the outlet of the tube pass of the dryer is 5 percent, the opening degree of the first self-regulating valve is adjusted to be large;
step nine: and seventhly, when the temperature of the waste gas is lower than 80 ℃, the opening degree of the second self-regulating valve is adjusted to be large, and when the temperature of the waste gas is higher than 80 ℃, the opening degree of the second self-regulating valve is adjusted to be small.
The invention has the advantages of simple structure, reasonable design, low operation cost, recycling of solid wastes generated in the water treatment process on the premise of ensuring no pollution of the environment, realization of circular economy and environmental protection.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings, in which like reference numerals refer to like parts throughout. For the sake of simplicity, only the parts relevant to the invention are schematically shown in the drawings, and they do not represent the actual structure as a product.
As shown in figure 1, the invention comprises a raw water system 1, wherein the raw water system 1 is connected with a reclaimed water recycling device 4 through a desalted water device 2 and a fertilizer production system 3, a sewage outlet of the desalted water device 2 and a sewage outlet of the reclaimed water recycling device 4 are respectively connected with a spiral solid-liquid separator 5, a liquid outlet of the spiral solid-liquid separator 5 is connected with a water inlet of the reclaimed water recycling device 4 through a pipeline, and a water outlet of the reclaimed water recycling device 4 is connected with a water inlet of the fertilizer production system 3; a solid outlet of the spiral solid-liquid separator 5 is sequentially connected with a lifting machine 7, a tube pass of a drying machine 8, a scraper conveyor 9, a belt scale 10 and a feed inlet of a mill 11 through a drying device 6, the mill 11 is connected with an analyzer 12 arranged at the top of the mill 11, the analyzer 12 is connected with an inlet of a cyclone dust collector 13 through a pipeline, an outlet of the cyclone dust collector 13 is connected with a finished product bin 14, and a material recovery port of the cyclone dust collector 13 is connected with a bottom inlet 29 of the mill 11 through a fan 15; the steam system 16 is respectively connected with an inlet of a shell pass of the dryer 8 and an inlet of a shell pass of the air heat exchanger 18 through a first tee joint 17, an outlet of the shell pass of the dryer 8 and an outlet of the shell pass of the air heat exchanger 18 are respectively connected with a condensate system 19, an inlet of a tube pass of the air heat exchanger 18 is connected with the atmosphere, an outlet of the tube pass of the air heat exchanger 18 is connected with the tube pass of the dryer 8, a dry dust removal port is arranged at the tail end of the tube pass of the dryer 8 and is connected with the atmosphere through a dust remover 20 and an induced draft fan 21, and a dust removal recovery port arranged on the dust remover 20 is connected with an inlet of the scraper conveyor 9.
Preferably, the finished product bin 14 is connected with a packing machine 23 through a second tee 22, and a third end of the second tee 22 is connected with a compound fertilizer production device 25 through a bin pump 24.
Preferably, a first self-regulating valve 26 is arranged between the first tee 17 and the inlet of the shell pass of the dryer 8, and a second self-regulating valve 27 is arranged between the first tee 17 and the inlet of the shell pass of the air heat exchanger 18.
Preferably, an atmosphere pipeline connected with the atmosphere is arranged on the induced draft fan 21, and a third self-regulating valve 28 is installed on the atmosphere pipeline.
Preferably, a fourth self-regulating valve 30 is arranged between the second tee 22 and the packing machine 23, and a fifth self-regulating valve 31 is arranged between the third end of the second tee 22 and the bin pump 24.
Preferably, the drying device 6 is a natural drying yard or a dryer.
A recovery method of a device for treating and recovering impurities in chemical fertilizer sewage comprises the following steps:
the method comprises the following steps: primary water in the raw water system 1 enters the fertilizer production system 3 through the desalted water device 2 for use, waste water used in the fertilizer production system 3 enters the reclaimed water recycling device 4 through a water inlet of the reclaimed water recycling device 4 for purification treatment, impurities after purification treatment enter the spiral solid-liquid separator 5 through a sewage discharge outlet of the reclaimed water recycling device 4, impurities in the desalted water device 2 enter the spiral solid-liquid separator 5 through a sewage discharge outlet of the desalted water device 2, and qualified water after purification treatment enters the fertilizer production system 3 through a water outlet of the reclaimed water recycling device 4 and a water inlet of the fertilizer production system 3 for reuse;
step two: after the impurities subjected to purification treatment in the step one and the impurities in the desalted water device 2 enter the spiral solid-liquid separator 5, solid-liquid separation is carried out through the spiral solid-liquid separator 5, the liquid subjected to solid-liquid separation enters the reclaimed water recycling device 4 through a liquid outlet of the spiral solid-liquid separator 5 and a water inlet of the reclaimed water recycling device 4, and purification treatment is carried out again; the solid material after solid-liquid separation enters a drying device 6 through a solid outlet of a spiral solid-liquid separator 5, and the drying device 6 is a natural drying yard or a dryer; the moisture content of the solid material after passing through the drying device is less than 15 percent;
step three: the solid material with the moisture content of less than 15 percent in the second step enters a tube pass of a dryer 8 through a lifter 7 to be dried; the temperature of the solid material at the inlet of the 8 tube pass of the dryer is normal temperature, and the moisture content is less than 15%; the temperature of the solid material at the outlet of the 8 tube pass of the dryer is 70 ℃, and the water content is 5%;
step four: solid materials at the tube pass outlet of the dryer 8 in the third step sequentially pass through the scraper 9 and the belt scale 10 to enter the mill 11 for grinding, the ground materials enter the analyzer 12 at the top of the mill 11, the analyzer 12 selects powder, the granularity of a finished product is controlled within the range of 50-300 meshes by changing the frequency of the analyzer, the materials with qualified granularity enter the cyclone dust collector 13 from the outlet of the analyzer 12, and the materials with unqualified granularity return to the mill 11 through the analyzer 12 to be ground continuously; the amount of solid material in the mill 11 can be adjusted by the belt scale 10;
step five: in the fourth step, the material with qualified granularity entering the cyclone dust collector 13 is separated by the cyclone dust collector 13, and the separated solid material enters the finished product bin 14; the separated gas enters the mill 11 from a bottom inlet 29 of the mill 11 to form circulating air;
step six: the solid materials entering the finished product bin 14 in the step five can be sold as auxiliary materials or finished products for producing compound fertilizers according to actual conditions, when the solid materials need to be used as the auxiliary materials for producing the compound fertilizers, the fifth self-regulating valve 31 is opened, and the bin pump 24 is started, so that the solid materials enter the compound fertilizer production device 25; when the solid materials are required to be sold for the outside as finished products, the fourth self-regulating valve 30 is opened, and the solid materials enter the packaging machine 23 to be packaged and sold for the outside; when the fertilizer needs to be used as an auxiliary material for producing compound fertilizer and a finished product for sale, the opening degree of the fifth self-regulating valve 31 and the opening degree of the fourth self-regulating valve 30 can be adjusted; the solid material entering the finished product bin 14 is 50-300 meshes of white dry soil;
step seven: steam with the pressure of 0.5MPa and the temperature of 158 ℃ in the steam system 16 is respectively in the shell pass of the dryer 8 and the shell pass of the air heat exchanger 18 through a first tee joint 17, and the steam entering the shell pass of the dryer 8 is used as a heat source of the dryer to exchange heat with solid materials in the tube pass of the dryer 8 and then enters a condensate system 19; the steam entering the shell pass of the air heat exchanger 18 exchanges heat with the air in the tube pass of the air heat exchanger 18, the air in the tube pass of the air heat exchanger 18 is heated to 130 ℃, the hot air at 130 ℃ enters the tube pass of the dryer 8 and carries away the solid materials in the tube pass of the dryer 8 to generate dust-containing air after water vapor is generated, the hot air and the dust-containing air enter the dust remover 20 for solid-gas separation, and the solid-gas separation is carried outThe solid material enters the first scraper conveyor 10 through a dedusting recovery port, and the waste gas after solid-gas separation is discharged into the atmosphere through a draught fan 21; the dust content of the waste gas discharged into the atmosphere is not higher than 20mg/Nm3(ii) a The temperature of the waste gas is 80 ℃;
step eight: when the moisture content of the solid material at the outlet of the tube side of the dryer 8 is 3%, the opening degree of the first self-regulating valve 26 is adjusted to be small, and when the moisture content of the solid material at the outlet of the tube side of the dryer 8 is 5%, the opening degree of the first self-regulating valve 26 is adjusted to be large;
step nine: and seventhly, when the temperature of the waste gas is lower than 80 ℃, the opening degree of the second self-regulating valve 27 is adjusted to be larger, and when the temperature of the waste gas is higher than 80 ℃, the opening degree of the second self-regulating valve 27 is adjusted to be smaller.
The invention can recycle water to the maximum extent, and effectively recycle the solid waste in the water, so that the solid waste is changed into a chemical fertilizer raw material which can be utilized and has value, thereby not only saving the treatment cost of the solid waste, but also saving the purchase cost of part of raw materials in the chemical fertilizer production process, and realizing the recycling economic benefit of waste utilization.
The present invention will now be further illustrated with reference to examples in order to explain the present invention in more detail. The specific embodiment is as follows:
example one
A chemical fertilizer sewage treatment and impurity recovery device comprises a raw water system 1, wherein the raw water system 1 is connected with a reclaimed water recovery and reuse device 4 through a desalted water device 2 and a chemical fertilizer production system 3, a drain outlet of the desalted water device 2 and a drain outlet of the reclaimed water recovery and reuse device 4 are respectively connected with a spiral solid-liquid separator 5, a liquid outlet of the spiral solid-liquid separator 5 is connected with a water inlet of the reclaimed water recovery and reuse device 4 through a pipeline, and a water outlet of the reclaimed water recovery and reuse device 4 is connected with a water inlet of the chemical fertilizer production system 3; a solid outlet of the spiral solid-liquid separator 5 is sequentially connected with a lifting machine 7, a tube pass of a drying machine 8, a scraper conveyor 9, a belt scale 10 and a feed inlet of a mill 11 through a drying device 6, the mill 11 is connected with an analyzer 12 arranged at the top of the mill 11, the analyzer 12 is connected with an inlet of a cyclone dust collector 13 through a pipeline, an outlet of the cyclone dust collector 13 is connected with a finished product bin 14, and a material recovery port of the cyclone dust collector 13 is connected with a bottom inlet 29 of the mill 11 through a fan 15; the steam system 16 is respectively connected with an inlet of a shell pass of the dryer 8 and an inlet of a shell pass of the air heat exchanger 18 through a first tee joint 17, an outlet of the shell pass of the dryer 8 and an outlet of the shell pass of the air heat exchanger 18 are respectively connected with a condensate system 19, an inlet of a tube pass of the air heat exchanger 18 is connected with the atmosphere, an outlet of the tube pass of the air heat exchanger 18 is connected with the tube pass of the dryer 8, a dry dust removal port is arranged at the tail end of the tube pass of the dryer 8 and is connected with the atmosphere through a dust remover 20 and an induced draft fan 21, and a dust removal recovery port arranged on the dust remover 20 is connected with an inlet of the scraper conveyor 9. The finished product bin 14 is connected with a packing machine 23 through a second tee 22, and a third end of the second tee 22 is connected with a compound fertilizer production device 25 through a bin pump 24. A first self-regulating valve 26 is arranged between the first tee joint 17 and the inlet of the shell pass of the dryer 8, and a second self-regulating valve 27 is arranged between the first tee joint 17 and the inlet of the shell pass of the air heat exchanger 18. And an atmospheric pipeline connected with the atmosphere is arranged on the induced draft fan 21, and a third self-regulating valve 28 is arranged on the atmospheric pipeline. A fourth self-regulating valve 30 is arranged between the second tee joint 22 and the packing machine 23, and a fifth self-regulating valve 31 is arranged between the third end of the second tee joint 22 and the bin pump 24. The drying device 6 is a natural drying yard or a dryer.
A recovery method of a device for treating and recovering impurities in chemical fertilizer sewage comprises the following steps:
the method comprises the following steps: primary water in the raw water system 1 enters the fertilizer production system 3 through the desalted water device 2 for use, waste water used in the fertilizer production system 3 enters the reclaimed water recycling device 4 through a water inlet of the reclaimed water recycling device 4 for purification treatment, impurities after purification treatment enter the spiral solid-liquid separator 5 through a sewage discharge outlet of the reclaimed water recycling device 4, impurities in the desalted water device 2 enter the spiral solid-liquid separator 5 through a sewage discharge outlet of the desalted water device 2, and qualified water after purification treatment enters the fertilizer production system 3 through a water outlet of the reclaimed water recycling device 4 and a water inlet of the fertilizer production system 3 for reuse;
step two: after the impurities subjected to purification treatment in the step one and the impurities in the desalted water device 2 enter the spiral solid-liquid separator 5, solid-liquid separation is carried out through the spiral solid-liquid separator 5, the liquid subjected to solid-liquid separation enters the reclaimed water recycling device 4 through a liquid outlet of the spiral solid-liquid separator 5 and a water inlet of the reclaimed water recycling device 4, and purification treatment is carried out again; the solid material after solid-liquid separation enters a drying device 6 through a solid outlet of a spiral solid-liquid separator 5, and the drying device 6 is a natural drying yard or a dryer; the moisture content of the solid material after passing through the drying device is less than 15 percent;
step three: the solid material with the moisture content of less than 15 percent in the second step enters a tube pass of a dryer 8 through a lifter 7 to be dried; the temperature of the solid material at the inlet of the 8 tube pass of the dryer is normal temperature, and the moisture content is less than 15%; the temperature of the solid material at the outlet of the 8 tube pass of the dryer is 70 ℃, and the water content is 5%;
step four: solid materials at the tube pass outlet of the dryer 8 in the third step sequentially pass through the scraper 9 and the belt scale 10 to enter the mill 11 for grinding, the ground materials enter the analyzer 12 at the top of the mill 11, the analyzer 12 selects powder, the granularity of a finished product is controlled within a 50-mesh range by changing the frequency of the analyzer, the materials with qualified granularity enter the cyclone dust collector 13 from the outlet of the analyzer 12, and the materials with unqualified granularity return to the mill 11 through the analyzer 12 to be continuously ground; the amount of solid material in the mill 11 can be adjusted by the belt scale 10;
step five: in the fourth step, the material with qualified granularity entering the cyclone dust collector 13 is separated by the cyclone dust collector 13, and the separated solid material enters the finished product bin 14; the separated gas enters the mill 11 from a bottom inlet 29 of the mill 11 to form circulating air;
step six: the solid materials entering the finished product bin 14 in the step five can be sold as auxiliary materials or finished products for producing compound fertilizers according to actual conditions, when the solid materials need to be used as the auxiliary materials for producing the compound fertilizers, the fifth self-regulating valve 31 is opened, and the bin pump 24 is started, so that the solid materials enter the compound fertilizer production device 25; when the solid materials are required to be sold for the outside as finished products, the fourth self-regulating valve 30 is opened, and the solid materials enter the packaging machine 23 to be packaged and sold for the outside; when the fertilizer needs to be used as an auxiliary material for producing compound fertilizer and a finished product for sale, the opening degree of the fifth self-regulating valve 31 and the opening degree of the fourth self-regulating valve 30 can be adjusted; the solid material entering the finished product bin 14 is white dry soil of 50 meshes;
step seven: steam with the pressure of 0.5MPa and the temperature of 158 ℃ in the steam system 16 is respectively in the shell pass of the dryer 8 and the shell pass of the air heat exchanger 18 through a first tee joint 17, and the steam entering the shell pass of the dryer 8 is used as a heat source of the dryer to exchange heat with solid materials in the tube pass of the dryer 8 and then enters a condensate system 19; the steam entering the shell pass of the air heat exchanger 18 exchanges heat with the air in the tube pass of the air heat exchanger 18, the air in the tube pass of the air heat exchanger 18 is heated to 130 ℃, the hot air at 130 ℃ enters the tube pass of the dryer 8 to carry the solid material in the tube pass of the dryer 8 away to generate dust-containing air after water vapor is generated, the hot air and the dust-containing air enter the dust remover 20 for solid-gas separation, the solid material after the solid-gas separation enters the first scraper machine 10 through a dust removal recovery port, and the waste gas after the solid-gas separation is discharged into the atmosphere through the induced draft fan 21; the dust content of the waste gas discharged into the atmosphere is not higher than 20mg/Nm3(ii) a The temperature of the waste gas is 80 ℃;
step eight: when the moisture content of the solid material at the outlet of the tube side of the dryer 8 is 3%, the opening degree of the first self-regulating valve 26 is adjusted to be small, and when the moisture content of the solid material at the outlet of the tube side of the dryer 8 is 5%, the opening degree of the first self-regulating valve 26 is adjusted to be large;
step nine: and seventhly, when the temperature of the waste gas is lower than 80 ℃, the opening degree of the second self-regulating valve 27 is adjusted to be larger, and when the temperature of the waste gas is higher than 80 ℃, the opening degree of the second self-regulating valve 27 is adjusted to be smaller.
Example two
A chemical fertilizer sewage treatment and impurity recovery device comprises a raw water system 1, wherein the raw water system 1 is connected with a reclaimed water recovery and reuse device 4 through a desalted water device 2 and a chemical fertilizer production system 3, a drain outlet of the desalted water device 2 and a drain outlet of the reclaimed water recovery and reuse device 4 are respectively connected with a spiral solid-liquid separator 5, a liquid outlet of the spiral solid-liquid separator 5 is connected with a water inlet of the reclaimed water recovery and reuse device 4 through a pipeline, and a water outlet of the reclaimed water recovery and reuse device 4 is connected with a water inlet of the chemical fertilizer production system 3; a solid outlet of the spiral solid-liquid separator 5 is sequentially connected with a lifting machine 7, a tube pass of a drying machine 8, a scraper conveyor 9, a belt scale 10 and a feed inlet of a mill 11 through a drying device 6, the mill 11 is connected with an analyzer 12 arranged at the top of the mill 11, the analyzer 12 is connected with an inlet of a cyclone dust collector 13 through a pipeline, an outlet of the cyclone dust collector 13 is connected with a finished product bin 14, and a material recovery port of the cyclone dust collector 13 is connected with a bottom inlet 29 of the mill 11 through a fan 15; the steam system 16 is respectively connected with an inlet of a shell pass of the dryer 8 and an inlet of a shell pass of the air heat exchanger 18 through a first tee joint 17, an outlet of the shell pass of the dryer 8 and an outlet of the shell pass of the air heat exchanger 18 are respectively connected with a condensate system 19, an inlet of a tube pass of the air heat exchanger 18 is connected with the atmosphere, an outlet of the tube pass of the air heat exchanger 18 is connected with the tube pass of the dryer 8, a dry dust removal port is arranged at the tail end of the tube pass of the dryer 8 and is connected with the atmosphere through a dust remover 20 and an induced draft fan 21, and a dust removal recovery port arranged on the dust remover 20 is connected with an inlet of the scraper conveyor 9. The finished product bin 14 is connected with a packing machine 23 through a second tee 22, and a third end of the second tee 22 is connected with a compound fertilizer production device 25 through a bin pump 24. A first self-regulating valve 26 is arranged between the first tee joint 17 and the inlet of the shell pass of the dryer 8, and a second self-regulating valve 27 is arranged between the first tee joint 17 and the inlet of the shell pass of the air heat exchanger 18. And an atmospheric pipeline connected with the atmosphere is arranged on the induced draft fan 21, and a third self-regulating valve 28 is arranged on the atmospheric pipeline. A fourth self-regulating valve 30 is arranged between the second tee joint 22 and the packing machine 23, and a fifth self-regulating valve 31 is arranged between the third end of the second tee joint 22 and the bin pump 24. The drying device 6 is a natural drying yard or a dryer.
A recovery method of a device for treating and recovering impurities in chemical fertilizer sewage comprises the following steps:
the method comprises the following steps: primary water in the raw water system 1 enters the fertilizer production system 3 through the desalted water device 2 for use, waste water used in the fertilizer production system 3 enters the reclaimed water recycling device 4 through a water inlet of the reclaimed water recycling device 4 for purification treatment, impurities after purification treatment enter the spiral solid-liquid separator 5 through a sewage discharge outlet of the reclaimed water recycling device 4, impurities in the desalted water device 2 enter the spiral solid-liquid separator 5 through a sewage discharge outlet of the desalted water device 2, and qualified water after purification treatment enters the fertilizer production system 3 through a water outlet of the reclaimed water recycling device 4 and a water inlet of the fertilizer production system 3 for reuse;
step two: after the impurities subjected to purification treatment in the step one and the impurities in the desalted water device 2 enter the spiral solid-liquid separator 5, solid-liquid separation is carried out through the spiral solid-liquid separator 5, the liquid subjected to solid-liquid separation enters the reclaimed water recycling device 4 through a liquid outlet of the spiral solid-liquid separator 5 and a water inlet of the reclaimed water recycling device 4, and purification treatment is carried out again; the solid material after solid-liquid separation enters a drying device 6 through a solid outlet of a spiral solid-liquid separator 5, and the drying device 6 is a natural drying yard or a dryer; the moisture content of the solid material after passing through the drying device is less than 15 percent;
step three: the solid material with the moisture content of less than 15 percent in the second step enters a tube pass of a dryer 8 through a lifter 7 to be dried; the temperature of the solid material at the inlet of the 8 tube pass of the dryer is normal temperature, and the moisture content is less than 15%; the temperature of the solid material at the outlet of the 8 tube pass of the dryer is 70 ℃, and the water content is 5%;
step four: solid materials at the tube pass outlet of the dryer 8 in the third step sequentially pass through the scraper 9 and the belt scale 10 to enter the mill 11 for grinding, the ground materials enter the analyzer 12 at the top of the mill 11, the analyzer 12 selects powder, the granularity of a finished product is controlled within the range of 300 meshes by changing the frequency of the analyzer, the materials with qualified granularity enter the cyclone dust collector 13 from the outlet of the analyzer 12, and the materials with unqualified granularity return to the mill 11 through the analyzer 12 to be continuously ground; the amount of solid material in the mill 11 can be adjusted by the belt scale 10;
step five: in the fourth step, the material with qualified granularity entering the cyclone dust collector 13 is separated by the cyclone dust collector 13, and the separated solid material enters the finished product bin 14; the separated gas enters the mill 11 from a bottom inlet 29 of the mill 11 to form circulating air;
step six: the solid materials entering the finished product bin 14 in the step five can be sold as auxiliary materials or finished products for producing compound fertilizers according to actual conditions, when the solid materials need to be used as the auxiliary materials for producing the compound fertilizers, the fifth self-regulating valve 31 is opened, and the bin pump 24 is started, so that the solid materials enter the compound fertilizer production device 25; when the solid materials are required to be sold for the outside as finished products, the fourth self-regulating valve 30 is opened, and the solid materials enter the packaging machine 23 to be packaged and sold for the outside; when the fertilizer needs to be used as an auxiliary material for producing compound fertilizer and a finished product for sale, the opening degree of the fifth self-regulating valve 31 and the opening degree of the fourth self-regulating valve 30 can be adjusted; the solid material entering the finished product bin 14 is white dry soil of 300 meshes;
step seven: steam with the pressure of 0.5MPa and the temperature of 158 ℃ in the steam system 16 is respectively in the shell pass of the dryer 8 and the shell pass of the air heat exchanger 18 through a first tee joint 17, and the steam entering the shell pass of the dryer 8 is used as a heat source of the dryer to exchange heat with solid materials in the tube pass of the dryer 8 and then enters a condensate system 19; the steam entering the shell pass of the air heat exchanger 18 exchanges heat with the air in the tube pass of the air heat exchanger 18, the air in the tube pass of the air heat exchanger 18 is heated to 130 ℃, the hot air at 130 ℃ enters the tube pass of the dryer 8 to carry the solid material in the tube pass of the dryer 8 away to generate dust-containing air after water vapor is generated, the hot air and the dust-containing air enter the dust remover 20 for solid-gas separation, the solid material after the solid-gas separation enters the first scraper machine 10 through a dust removal recovery port, and the waste gas after the solid-gas separation is discharged into the atmosphere through the induced draft fan 21; the dust content of the waste gas discharged into the atmosphere is not higher than 20mg/Nm3(ii) a The temperature of the waste gas is 80 ℃;
step eight: when the moisture content of the solid material at the outlet of the tube side of the dryer 8 is 3%, the opening degree of the first self-regulating valve 26 is adjusted to be small, and when the moisture content of the solid material at the outlet of the tube side of the dryer 8 is 5%, the opening degree of the first self-regulating valve 26 is adjusted to be large;
step nine: and seventhly, when the temperature of the waste gas is lower than 80 ℃, the opening degree of the second self-regulating valve 27 is adjusted to be larger, and when the temperature of the waste gas is higher than 80 ℃, the opening degree of the second self-regulating valve 27 is adjusted to be smaller.
EXAMPLE III
A chemical fertilizer sewage treatment and impurity recovery device comprises a raw water system 1, wherein the raw water system 1 is connected with a reclaimed water recovery and reuse device 4 through a desalted water device 2 and a chemical fertilizer production system 3, a drain outlet of the desalted water device 2 and a drain outlet of the reclaimed water recovery and reuse device 4 are respectively connected with a spiral solid-liquid separator 5, a liquid outlet of the spiral solid-liquid separator 5 is connected with a water inlet of the reclaimed water recovery and reuse device 4 through a pipeline, and a water outlet of the reclaimed water recovery and reuse device 4 is connected with a water inlet of the chemical fertilizer production system 3; a solid outlet of the spiral solid-liquid separator 5 is sequentially connected with a lifting machine 7, a tube pass of a drying machine 8, a scraper conveyor 9, a belt scale 10 and a feed inlet of a mill 11 through a drying device 6, the mill 11 is connected with an analyzer 12 arranged at the top of the mill 11, the analyzer 12 is connected with an inlet of a cyclone dust collector 13 through a pipeline, an outlet of the cyclone dust collector 13 is connected with a finished product bin 14, and a material recovery port of the cyclone dust collector 13 is connected with a bottom inlet 29 of the mill 11 through a fan 15; the steam system 16 is respectively connected with an inlet of a shell pass of the dryer 8 and an inlet of a shell pass of the air heat exchanger 18 through a first tee joint 17, an outlet of the shell pass of the dryer 8 and an outlet of the shell pass of the air heat exchanger 18 are respectively connected with a condensate system 19, an inlet of a tube pass of the air heat exchanger 18 is connected with the atmosphere, an outlet of the tube pass of the air heat exchanger 18 is connected with the tube pass of the dryer 8, a dry dust removal port is arranged at the tail end of the tube pass of the dryer 8 and is connected with the atmosphere through a dust remover 20 and an induced draft fan 21, and a dust removal recovery port arranged on the dust remover 20 is connected with an inlet of the scraper conveyor 9. The finished product bin 14 is connected with a packing machine 23 through a second tee 22, and a third end of the second tee 22 is connected with a compound fertilizer production device 25 through a bin pump 24. A first self-regulating valve 26 is arranged between the first tee joint 17 and the inlet of the shell pass of the dryer 8, and a second self-regulating valve 27 is arranged between the first tee joint 17 and the inlet of the shell pass of the air heat exchanger 18. And an atmospheric pipeline connected with the atmosphere is arranged on the induced draft fan 21, and a third self-regulating valve 28 is arranged on the atmospheric pipeline. A fourth self-regulating valve 30 is arranged between the second tee joint 22 and the packing machine 23, and a fifth self-regulating valve 31 is arranged between the third end of the second tee joint 22 and the bin pump 24. The drying device 6 is a natural drying yard or a dryer.
A recovery method of a device for treating and recovering impurities in chemical fertilizer sewage comprises the following steps:
the method comprises the following steps: primary water in the raw water system 1 enters the fertilizer production system 3 through the desalted water device 2 for use, waste water used in the fertilizer production system 3 enters the reclaimed water recycling device 4 through a water inlet of the reclaimed water recycling device 4 for purification treatment, impurities after purification treatment enter the spiral solid-liquid separator 5 through a sewage discharge outlet of the reclaimed water recycling device 4, impurities in the desalted water device 2 enter the spiral solid-liquid separator 5 through a sewage discharge outlet of the desalted water device 2, and qualified water after purification treatment enters the fertilizer production system 3 through a water outlet of the reclaimed water recycling device 4 and a water inlet of the fertilizer production system 3 for reuse;
step two: after the impurities subjected to purification treatment in the step one and the impurities in the desalted water device 2 enter the spiral solid-liquid separator 5, solid-liquid separation is carried out through the spiral solid-liquid separator 5, the liquid subjected to solid-liquid separation enters the reclaimed water recycling device 4 through a liquid outlet of the spiral solid-liquid separator 5 and a water inlet of the reclaimed water recycling device 4, and purification treatment is carried out again; the solid material after solid-liquid separation enters a drying device 6 through a solid outlet of a spiral solid-liquid separator 5, and the drying device 6 is a natural drying yard or a dryer; the moisture content of the solid material after passing through the drying device is less than 15 percent;
step three: the solid material with the moisture content of less than 15 percent in the second step enters a tube pass of a dryer 8 through a lifter 7 to be dried; the temperature of the solid material at the inlet of the 8 tube pass of the dryer is normal temperature, and the moisture content is less than 15%; the temperature of the solid material at the outlet of the 8 tube pass of the dryer is 70 ℃, and the water content is 5%;
step four: solid materials at the tube pass outlet of the dryer 8 in the third step sequentially pass through the scraper 9 and the belt scale 10 to enter the mill 11 for grinding, the ground materials enter the analyzer 12 at the top of the mill 11, the analyzer 12 selects powder, the granularity of a finished product is controlled within the range of 50-300 meshes by changing the frequency of the analyzer, the materials with qualified granularity enter the cyclone dust collector 13 from the outlet of the analyzer 12, and the materials with unqualified granularity return to the mill 11 through the analyzer 12 to be ground continuously; the amount of solid material in the mill 11 can be adjusted by the belt scale 10;
step five: in the fourth step, the material with qualified granularity entering the cyclone dust collector 13 is separated by the cyclone dust collector 13, and the separated solid material enters the finished product bin 14; the separated gas enters the mill 11 from a bottom inlet 29 of the mill 11 to form circulating air;
step six: the solid materials entering the finished product bin 14 in the step five can be sold as auxiliary materials or finished products for producing compound fertilizers according to actual conditions, when the solid materials need to be used as the auxiliary materials for producing the compound fertilizers, the fifth self-regulating valve 31 is opened, and the bin pump 24 is started, so that the solid materials enter the compound fertilizer production device 25; when the solid materials are required to be sold for the outside as finished products, the fourth self-regulating valve 30 is opened, and the solid materials enter the packaging machine 23 to be packaged and sold for the outside; when the fertilizer needs to be used as an auxiliary material for producing compound fertilizer and a finished product for sale, the opening degree of the fifth self-regulating valve 31 and the opening degree of the fourth self-regulating valve 30 can be adjusted; the solid material entering the finished product bin 14 is white dry soil of 300 meshes;
step seven: steam with the pressure of 0.5MPa and the temperature of 158 ℃ in the steam system 16 is respectively in the shell pass of the dryer 8 and the shell pass of the air heat exchanger 18 through a first tee joint 17, and the steam entering the shell pass of the dryer 8 is used as a heat source of the dryer to exchange heat with solid materials in the tube pass of the dryer 8 and then enters a condensate system 19; the steam entering the shell pass of the air heat exchanger 18 exchanges heat with the air in the tube pass of the air heat exchanger 18, the air in the tube pass of the air heat exchanger 18 is heated to 130 ℃, the hot air at 130 ℃ enters the tube pass of the dryer 8 to carry the solid material in the tube pass of the dryer 8 away to generate dust-containing air after water vapor is generated, the hot air and the dust-containing air enter the dust remover 20 for solid-gas separation, the solid material after the solid-gas separation enters the first scraper machine 10 through a dust removal recovery port, and the waste gas after the solid-gas separation is discharged into the atmosphere through the induced draft fan 21; the dust content of the waste gas discharged into the atmosphere is not highAt 20mg/Nm3(ii) a The temperature of the waste gas is 80 ℃;
step eight: when the moisture content of the solid material at the outlet of the tube side of the dryer 8 is 3%, the opening degree of the first self-regulating valve 26 is adjusted to be small, and when the moisture content of the solid material at the outlet of the tube side of the dryer 8 is 5%, the opening degree of the first self-regulating valve 26 is adjusted to be large;
step nine: and seventhly, when the temperature of the waste gas is lower than 80 ℃, the opening degree of the second self-regulating valve 27 is adjusted to be larger, and when the temperature of the waste gas is higher than 80 ℃, the opening degree of the second self-regulating valve 27 is adjusted to be smaller.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," and the like are to be construed broadly and may be, for example, fixedly connected, integrally connected, or detachably connected; or communication between the interior of the two elements; they may be directly connected or indirectly connected through an intermediate, and those skilled in the art can understand the specific meaning of the above terms in the present invention according to specific situations. The above detailed description is only specific to possible embodiments of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments, modifications, and alterations without departing from the technical spirit of the present invention should be included in the scope of the present invention.
Claims (7)
1. The utility model provides a chemical fertilizer sewage treatment retrieves impurity device, includes raw water system (1), its characterized in that: the raw water system (1) is connected with the reclaimed water recycling device (4) through the desalted water device (2) and the fertilizer production system (3), a sewage outlet of the desalted water device (2) and a sewage outlet of the reclaimed water recycling device (4) are respectively connected with the spiral solid-liquid separator (5), a liquid outlet of the spiral solid-liquid separator (5) is connected with a water inlet of the reclaimed water recycling device (4) through a pipeline, and a water outlet of the reclaimed water recycling device (4) is connected with a water inlet of the fertilizer production system (3); a solid outlet of the spiral solid-liquid separator (5) is sequentially connected with a lifting machine (7), a tube pass of a drying machine (8), a scraper machine (9), a belt scale (10) and a feed inlet of a mill (11) through a drying device (6), the mill (11) is connected with an analyzer (12) arranged at the top of the mill, the analyzer (12) is connected with an inlet of a cyclone dust collector (13) through a pipeline, an outlet of the cyclone dust collector (13) is connected with a finished product bin (14), and a material recovery port of the cyclone dust collector (13) is connected with a bottom inlet (29) of the mill (11) through a fan (15); steam system (16) link to each other with the import of desiccator (8) shell side and the import of air heat exchanger (18) shell side respectively through first tee bend (17), the export of desiccator (8) shell side and the export of air heat exchanger (18) shell side link to each other with condensate system (19) respectively, the import of air heat exchanger (18) tube side links to each other with the atmosphere, the export of air heat exchanger (18) tube side links to each other with the tube side of desiccator (8), the tube side end of desiccator (8) is equipped with dry dust removal mouth, dry dust removal mouth passes through dust remover (20) and draught fan (21) and links to each other with the atmosphere, the dust removal recovery mouth that sets up on dust remover (20) links to each other with the import of first scraper (9).
2. The chemical fertilizer sewage treatment impurity recovery device of claim 1, characterized in that: and the finished product bin (14) is connected with a packing machine (23) through a second tee joint (22), and the third end of the second tee joint (22) is connected with a compound fertilizer production device (25) through a bin pump (24).
3. The chemical fertilizer sewage treatment impurity recovery device of claim 1, characterized in that: a first self-regulating valve (26) is arranged between the first tee joint (17) and the inlet of the shell pass of the dryer (8), and a second self-regulating valve (27) is arranged between the first tee joint (17) and the inlet of the shell pass of the air heat exchanger (18).
4. The chemical fertilizer sewage treatment impurity recovery device of claim 1, characterized in that: and an atmospheric pipeline connected with the atmosphere is arranged on the induced draft fan (21), and a third self-regulating valve (28) is arranged on the atmospheric pipeline.
5. The chemical fertilizer sewage treatment impurity recovery device of claim 2, characterized in that: a fourth self-regulating valve (30) is arranged between the second tee joint (22) and the packing machine (23), and a fifth self-regulating valve (31) is arranged between the third end of the second tee joint (22) and the bin pump (24).
6. The chemical fertilizer sewage treatment impurity recovery device of claim 1, characterized in that: the drying device (6) is a natural drying yard or a dryer.
7. The recycling method of the device for recycling impurities in fertilizer sewage treatment as claimed in claim 1, which is characterized in that: the recovery method comprises the following steps:
the method comprises the following steps: primary water in the raw water system (1) enters the fertilizer production system (3) through the desalted water device (2) for use, waste water used in the fertilizer production system (3) enters the reclaimed water recycling device (4) through a water inlet of the reclaimed water recycling device (4) for purification treatment, impurities after purification treatment enter the spiral solid-liquid separator (5) through a sewage outlet of the reclaimed water recycling device (4), impurities in the desalted water device (2) enter the spiral solid-liquid separator (5) through a sewage outlet of the desalted water device (2), and qualified water after purification treatment enters the fertilizer production system (3) through a water outlet of the reclaimed water recycling device (4) and a water inlet of the fertilizer production system (3) for reuse;
step two: after the impurities subjected to purification treatment in the step one and the impurities in the desalted water device (2) enter the spiral solid-liquid separator (5), solid-liquid separation is carried out through the spiral solid-liquid separator (5), the liquid subjected to solid-liquid separation enters the reclaimed water recycling device (4) through a liquid outlet of the spiral solid-liquid separator (5) and a water inlet of the reclaimed water recycling device (4), and purification treatment is carried out again; solid materials after solid-liquid separation enter a drying device (6) through a solid outlet of a spiral solid-liquid separator (5), and the drying device (6) is a natural drying yard or a dryer; the moisture content of the solid material after passing through the drying device is less than 15 percent;
step three: the solid material with the moisture content of less than 15 percent in the second step enters a tube pass of a dryer (8) through a lifter (7) to be dried; the temperature of the solid material at the inlet of the tube side of the dryer (8) is normal temperature, and the moisture content is less than 15%; the temperature of the solid material at the tube pass outlet of the dryer (8) is 70 ℃, and the water content is 5%;
step four: solid materials at the tube pass outlet of the dryer (8) in the third step sequentially pass through the scraper conveyor (9) and the belt scale (10) and enter the mill (11) for grinding, the ground materials enter the analyzer (12) at the top of the mill (11), the analyzer (12) selects powder, the granularity of finished products is controlled within the range of 50-300 meshes by changing the frequency of the analyzer, the materials with qualified granularity enter the cyclone dust collector (13) from the outlet of the analyzer (12), and the materials with unqualified granularity return to the mill (11) through the analyzer (12) for continuous grinding; the amount of solid materials in the mill (11) can be adjusted by a belt weigher (10);
step five: in the fourth step, the material with qualified granularity entering the cyclone dust collector (13) is separated by the cyclone dust collector (13), and the separated solid material enters a finished product bin (14); the separated gas enters the mill (11) from a bottom inlet (29) of the mill (11) to form circulating air;
step six: the solid materials entering the finished product bin (14) in the step five can be sold as auxiliary materials or finished products for producing compound fertilizers according to actual conditions, when the solid materials need to be used as the auxiliary materials for producing the compound fertilizers, the fifth self-regulating valve (31) is opened, the bin pump (24) is started, and the solid materials enter the compound fertilizer production device (25); when the solid materials are required to be sold for the outside as finished products, the fourth self-adjusting valve (30) is opened, and the solid materials enter the packaging machine (23) to be packaged and sold for the outside; when the fertilizer needs to be used as an auxiliary material for producing compound fertilizer and a finished product for sale, the opening degree of the fifth self-regulating valve (31) and the opening degree of the fourth self-regulating valve (30) can be regulated; the solid material entering the finished product bin (14) is 50-300 meshes of white dry soil;
step seven: steam with the pressure of 0.5MPa and the temperature of 158 ℃ in the steam system (16) is respectively subjected to heat exchange with the shell pass of the dryer (8) and the shell pass of the air heat exchanger (18) through a first tee joint (17), and the steam entering the shell pass of the dryer (8) is used as a heat source of the dryer to exchange heat with solid materials in the tube pass of the dryer (8) and then enters a condensate system (19); the steam entering the shell side of the air heat exchanger (18) and the tube side of the air heat exchanger (18)The air in the air heat exchanger (18) is heated to 130 ℃, the hot air at 130 ℃ enters the tube side of the dryer (8) to carry away the solid material in the tube side of the dryer (8) to generate dust-containing air after water vapor is generated, the hot air and the dust-containing air enter the dust remover (20) for solid-gas separation, the solid material after the solid-gas separation enters the first scraper (10) through a dust removal recovery port, and the waste gas after the solid-gas separation is discharged into the atmosphere through the induced draft fan (21); the dust content of the waste gas discharged into the atmosphere is not higher than 20mg/Nm3(ii) a The temperature of the waste gas is 80 ℃;
step eight: when the moisture content of the solid material at the tube side outlet of the dryer (8) is 3 percent in the third step, the opening degree of the first self-regulating valve (26) is adjusted to be small, and when the moisture content of the solid material at the tube side outlet of the dryer (8) is 5 percent, the opening degree of the first self-regulating valve (26) is adjusted to be large;
step nine: and seventhly, when the temperature of the waste gas is lower than 80 ℃, the opening degree of the second self-regulating valve (27) is adjusted to be large, and when the temperature of the waste gas is higher than 80 ℃, the opening degree of the second self-regulating valve (27) is adjusted to be small.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101700953A (en) * | 2009-11-20 | 2010-05-05 | 齐冰 | Environmental hygiene processing system of monomer dispersing type urban sewage source |
| CN102151683A (en) * | 2010-12-02 | 2011-08-17 | 北京工商大学 | Damp and heat fermentation comprehensive harmless and resource processing system for kitchen waste |
| CN103232133A (en) * | 2012-06-15 | 2013-08-07 | 北京新创宏力科技发展有限公司 | Composite biochemical, coupled physicochemical, and heavy-metal-removing sewage treatment process and technology |
| CN104445730A (en) * | 2014-11-21 | 2015-03-25 | 贵阳中化开磷化肥有限公司 | Comprehensive utilization method of wastewater containing phosphorus and fluorine |
| CN104692578A (en) * | 2015-02-13 | 2015-06-10 | 何文元 | Waste liquid treatment process for producing palm oil |
| CN105768180A (en) * | 2016-03-25 | 2016-07-20 | 广东省金叶科技开发有限公司 | Comprehensive utilization method of waste liquor produced during production of paper-making process reconstituted tobacco |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2200756A1 (en) * | 1972-01-07 | 1973-07-12 | Koppers Wistra Ofenbau Gmbh | PROCEDURE FOR THE COMBINATION OF MUELL AND SEWAGE SLUDGE AND DEVICE FOR CARRYING OUT THE PROCEDURE |
| US5744037A (en) * | 1995-11-28 | 1998-04-28 | Ebara Corporation | Method of treating foul water |
| CN101307332B (en) * | 2008-06-23 | 2011-06-29 | 昆明东燃科技开发有限公司 | Innocent comprehensive approach method for human feces by biotechnology |
-
2016
- 2016-08-29 CN CN201610806844.4A patent/CN106242649B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101700953A (en) * | 2009-11-20 | 2010-05-05 | 齐冰 | Environmental hygiene processing system of monomer dispersing type urban sewage source |
| CN102151683A (en) * | 2010-12-02 | 2011-08-17 | 北京工商大学 | Damp and heat fermentation comprehensive harmless and resource processing system for kitchen waste |
| CN103232133A (en) * | 2012-06-15 | 2013-08-07 | 北京新创宏力科技发展有限公司 | Composite biochemical, coupled physicochemical, and heavy-metal-removing sewage treatment process and technology |
| CN104445730A (en) * | 2014-11-21 | 2015-03-25 | 贵阳中化开磷化肥有限公司 | Comprehensive utilization method of wastewater containing phosphorus and fluorine |
| CN104692578A (en) * | 2015-02-13 | 2015-06-10 | 何文元 | Waste liquid treatment process for producing palm oil |
| CN105768180A (en) * | 2016-03-25 | 2016-07-20 | 广东省金叶科技开发有限公司 | Comprehensive utilization method of waste liquor produced during production of paper-making process reconstituted tobacco |
Non-Patent Citations (1)
| Title |
|---|
| 化肥装置取用水现状与节水减排潜力分析;李自强;《大氮肥》;20101025;第33卷(第5期);第310-314页 * |
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