CN112299513A - Ammonia distillation and dephenolization coupling device and process for wastewater for semi-coke production - Google Patents

Abstract

The invention relates to the technical field of semi-coke wastewater treatment, in particular to a wastewater ammonia distillation dephenolization coupling device for semi-coke production, which comprises a heating mechanism, wherein a spray tower is erected above the heating mechanism, a heat exchange mechanism is arranged on the side wall of the spray tower, a preheating mechanism is arranged on one side of the spray tower, which is far away from the heat exchange mechanism, and the preheating mechanism is connected with the heating mechanism; the heating mechanism is provided with a gas transmission mechanism; can burn the steam that contains phenol through the heating mechanism that sets up, and then make the phenol after the burning decompose into water and carbon dioxide, form vapor and carry out the heat transfer from heat transfer mechanism's inside, heating mechanism can also be to entering into the inside phenol-containing liquid heating of heating chamber, and then let after the liquid vaporization of phenol-containing burn its inside of inputing into the combustion chamber through gas transmission mechanism, through the mechanism of preheating that sets up, can preheat the inside water of aqueduct, and can practice thrift a large amount of water.

Description

Ammonia distillation and dephenolization coupling device and process for wastewater for semi-coke production

Technical Field

The invention relates to the technical field of semi-coke wastewater treatment, in particular to a wastewater ammonia distillation dephenolization coupling device for semi-coke production and a process thereof.

Background

The semi-coke wastewater is wastewater generated in the recovery process of coal coking products, has complex and variable components and belongs to industrial wastewater difficult to treat. The semi-coke wastewater of a certain plant is treated, and the adaptation condition of microorganisms and the treatment effect on the wastewater are examined. The ammonia evaporation-dephenolization treatment process can tolerate harmful substances with higher concentration in the wastewater, has ideal treatment effect on various pollutants in the semi-coke wastewater, and has low operation cost.

The prior art adopts an advanced dry distillation and co-firing process, ammonia distillation and phenol distillation are realized at high temperature, the boiling point of ammonia is smaller than that of volatile phenol, ammonia distillation and phenol distillation are carried out in two steps, the process is complex, phenol-containing sewage is heated at high temperature, phenol in the sewage is evaporated and overflows along with steam, and then alkali liquor is introduced to absorb the phenol to form sodium phenolate, so that the aim of dephenolization is fulfilled.

Disclosure of Invention

The invention provides a coupling device for ammonia evaporation and dephenolization of wastewater for semi-coke production and a process thereof, aiming at solving the problems that ammonia evaporation and phenol evaporation are required to be carried out in two steps, the process is complex, phenol-containing sewage is heated at high temperature, phenol in the sewage overflows with steam after being evaporated, and then alkali liquor is introduced to absorb the phenol to form sodium phenolate, so that the purpose of dephenolization is achieved.

The technical scheme adopted by the invention for solving the technical problems is as follows: a coupling device for ammonia distillation and dephenolization of wastewater for semi-coke production comprises a heating mechanism, wherein a spray tower is erected above the heating mechanism, a heat exchange mechanism is installed on the side wall of the spray tower, a preheating mechanism is arranged on one side, far away from the heat exchange mechanism, of the spray tower, and the preheating mechanism is connected with the heating mechanism; the heating mechanism is provided with a gas transmission mechanism; a spray pipe is arranged in the spray tower, a water inlet of the spray pipe is connected with the preheating mechanism, and a condensation pipe is fixed on the side wall of the spray tower; can burn the steam that contains phenol through the heating mechanism that sets up, and then make the phenol after the burning decompose into water and carbon dioxide, form vapor and carry out the heat transfer from heat transfer mechanism's inside, heating mechanism can also be to entering into the inside phenol-containing liquid heating of heating chamber, and then let after the liquid vaporization of phenol-containing burn its inside of inputing into the combustion chamber through gas transmission mechanism, through the mechanism of preheating that sets up, can preheat the inside water of aqueduct, and can practice thrift a large amount of water.

Preferably, the heating mechanism comprises a combustion furnace, a combustion chamber is arranged above the combustion furnace, a heating chamber positioned above the combustion furnace is arranged on one side of the combustion chamber, and a vaporizing chamber for storing gas is arranged above the heating chamber; a guide pipe is arranged above the vaporizing chamber, and a preheating mechanism is connected to the side wall of the guide pipe. Through the burning of the burning furnace that sets up for when burning furnace can heat the heating chamber, can also burn the inside phenol-containing gas of combustion chamber, through the vaporizer that sets up, can let the phenol-containing liquid heating to the vaporization in the heating chamber, and then enter into the inside of combustion chamber.

Preferably, an inclined partition plate is provided inside the combustion chamber. The combustion chamber is separated by the partition plate, after gas enters the combustion chamber from the vaporization chamber, the gas can be combusted in the combustion chamber, and the partition plate has the function of facilitating the entry of carbon dioxide and water after combustion into the heat exchange mechanism.

Preferably, the preheating mechanism comprises a drain pipe connected with the flow guide pipe, the end part of the drain pipe, far away from the flow guide pipe, is connected to the inside of the preheating box, the preheating box is fixedly connected to the spray tower, the side wall of the preheating box is connected with a water pipe, the drain pipe is communicated with the water pipe, a water pump is mounted on the side wall of the water pipe, and the water pump is connected to the flow guide pipe. Preheat the mechanism through setting up and come to enter into the inside part of preheating cabinet to the sewage inlet tube and preheat, the inside of preheating cabinet can be continuous from discharging in the raceway to the inside of preheating cabinet to the inside water of preheating cabinet for the inside water of preheating cabinet is heated, and sewage when in the sewage inlet tube enters into and can be preheated after the preheating cabinet is inside, and then makes the inside sewage that enters into the shower pipe have certain temperature.

Preferably, the preheating mechanism further comprises a sewage inlet pipe, a sewage interface is communicated with the bottom of the sewage inlet pipe, and the sewage interface is communicated with the spray pipe. Through the sewage inlet tube that sets up, the inside of shower is imported from the sewage inlet tube to the waste water that will contain ammonia and phenol, and then the shower sprays sewage with atomizing form downwards, and the ammonia in the sewage of being convenient for is taken the inside condensation of condenser pipe by low pressure steam and forms the aqueous ammonia and then deviates from the ammonia in the sewage.

Preferably, the gas transmission mechanism comprises a gas guide pipe fixed between the outer wall of the vaporizing chamber and the outer wall of the combustion chamber, and the gas guide pipe is provided with a fan. The steam in the vaporizing chamber can be input into the combustion chamber through the steam guide pipe by the arranged fan for combustion.

Preferably, the heat exchange mechanism comprises a heat exchange box fixed on the side wall of the spray tower, the side wall of the heat exchange box is connected with an inlet pipe used for inputting low-pressure steam, and an air inlet pipe is arranged at the bottom of the heat exchange box. The function of water conservation can be played through the heat transfer mechanism who sets up, and the gas that forms from the combustion chamber burning can condense in the inside of heat transfer case, and then retrieves the comdenstion water, has avoided the problem of extravagant big water gaging.

Preferably, the bottom of the air inlet pipe is provided with a water collecting tank, and the bottom of the water collecting tank is provided with a movable plug for discharging condensed water. The inside of heat transfer case can be inputed to the inside gas of combustion chamber through the intake pipe that sets up, and then heats the outer wall of aqueduct, and then reaches the inside sewage that removes ammonia for the first time of aqueduct, because aqueduct and spray column have formed the intercommunication for inside and the inside liquid level looks parallel and level of aqueduct of spray column, and the height that highly will be less than the intercommunication mouth of heat transfer case and spray column department of liquid level.

Preferably, the heat exchange mechanism further comprises a water guide pipe arranged inside the heat exchange box, the water guide pipe is of an L-shaped structure, the cross section of the water guide pipe is square, and one end of the water guide pipe is communicated with the bottom of the spray tower; through the aqueduct that sets up, can preheat the leading-in inside to the heat transfer case of water inside the spray column, and then increased the temperature of spray column bottom, improved the efficiency to the further deamination of the sewage of spray column bottom.

Preferably, the inside of aqueduct is provided with the push pedal, sealing connection has the second bellows in the push pedal, the inner wall sealing connection of second bellows and aqueduct, the fixed surface of push pedal has the push rod that runs through the inside of second bellows, the push rod is connected with first bellows on the surface, the junction of first bellows and push rod is sealed, the inside wall sealing connection of first bellows and heat transfer case, the push rod with swing joint between the heat transfer case, the one end that the push pedal was kept away from to the push rod is connected with the motor that is used for driving push rod reciprocating motion. The push rod is arranged to move under the driving of the motor, the push plate which can be carried by the push rod moves, when the push plate moves in the water guide pipe, the push plate can be stretched or contracted through the second corrugated pipe to change the volume of water in the water guide pipe, so that the control on the amount of water in the water guide pipe can be realized, the steam conveyed from the inlet pipe and the heat of the steam conveyed by the combustion chamber can be controlled, when the temperature of gas in the air inlet pipe needs to be increased, the second corrugated pipe is stretched in the water guide pipe, so that the volume in the water guide pipe is reduced, the amount of the steam conveyed from the inlet pipe and the steam conveyed by the combustion chamber are reduced, the temperature of the gas entering the heat exchange box is increased, the steam temperature is controlled, the steam conveyed by the combustion chamber supplements inlet steam, water resources are saved, and the recovery and utilization of the steam of the phenol are realized, when needs turn down the inside gas temperature of admission pipe, make the second bellows compress in the inside of aqueduct, can make the inside volume grow of aqueduct, and then make the steam that the combustion chamber carried enter into the inside gas temperature reduction of heat transfer case, can reach the temperature requirement that accords with the ammonia still, be provided with the thermometer that is used for measuring the temperature in the inside of heat transfer case, the accessible computer plays the position of adjusting the push pedal to the rotation of control motor, and then adjusts the temperature of ammonia still.

A coupling process for ammonia distillation and dephenolization of wastewater for semi coke production comprises the following steps:

firstly, steam is input from an inlet pipe, and the temperature of the steam is as follows: 110-;

step two: the bottom of spray tower can be dropped to sewage after the shower sprays, and sewage can be in the inside gathering of spray tower, and at this moment, the inside temperature of spray tower is: 30-50 ℃, the spray tower is communicated with the water guide pipe, the liquid level inside the spray tower is flush with the liquid level inside the water guide pipe, at the moment, hot water at the bottom of the spray tower is input into the water delivery pipe inside the heat exchange box through a water pump, the water delivery pipe inputs water into the preheating box to preheat sewage inside the sewage water inlet pipe, the water inside the water delivery pipe guides the water into the heating chamber from the guide pipe through the water discharge pipe, further, the water inside the heating chamber is heated to 240 ℃ along with the steam, the water inside the heating chamber is vaporized to realize phenol evaporation, the vaporized water vapor and the volatile phenol are gathered inside the vaporization chamber, the fan inputs the mixture of the vaporized vapor and the volatile phenol into the combustion chamber from the steam guide pipe, the temperature inside the combustion chamber reaches 1300 ℃ along with the steam, further, the vaporized phenol can be completely combusted, the combusted phenol forms gaseous water and carbon dioxide, steam is input into the heat exchange box from the inside of the air inlet pipe, at the moment, the water guide pipe is heated, further water at the bottom of the spray tower is heated and evaporated to further evaporate ammonia, and the evaporated ammonia, the steam conveyed by the combustion chamber and the steam input by the inlet pipe are mixed and enter the spray tower;

step three: the temperature of the outer wall of the water guide pipe is lower than that of the inside of the heat exchange box, at the moment, the outer wall of the water guide pipe can be aggregated to form condensed water, so that the condensed water can enter the inside of the water collection tank, when the water volume in the water collection tank reaches half of the volume of the water collection tank, the movable plug is opened, the water volume flowing out of the movable plug is equal to the condensed water volume, and then high-temperature gas cannot overflow from the movable plug during drainage;

step four: the motor drives the push pedal removal, the push pedal removal that the push rod can take, when the push pedal removes in the inside of aqueduct, when needs make the inside volume of aqueduct diminish, make the aqueduct promote the temperature of the steam of steam and the import pipe input of carrying from the combustion chamber, the push pedal drives the second bellows and removes, at this moment, the second bellows removes towards the direction of spray column, when needs make the inside volume grow of aqueduct, make the aqueduct reduce the temperature of the steam of carrying from the combustion chamber and the steam of import pipe input, the push pedal drives the second bellows and removes, at this moment, the direction that the spray column was kept away from to the second bellows removes, thereby guarantee to carry the temperature of steam and follow the temperature that the import pipe pours into the temperature the same from the combustion chamber.

The invention has the beneficial effects that:

(1) heating mechanism can be to entering into the heating chamber inside containing the heating of phenol liquid, and then realizes evaporating phenol after letting the liquid vaporization of containing phenol to burn its inside of inputing the combustion chamber through gas transmission mechanism, through the mechanism of preheating that sets up, can preheat the inside water of aqueduct, and can practice thrift a large amount of water. Through the burning furnace that sets up, can heat the heating chamber simultaneously, can also burn the inside phenol-containing gas of combustion chamber, through the vaporizer that sets up, can let the phenol-containing liquid heating in the heating chamber to the vaporization, and then enter into the inside of combustion chamber. The baffle through setting up separates the combustion chamber, and after gas entered into the inside of combustion chamber from the vaporizer, can burn in the inside of combustion chamber, further with phenol decomposition into water and carbon dioxide, the baffle plays the carbon dioxide and the water of being convenient for after the burning can enter into heat transfer mechanism's function.

(2) The sewage entering the preheating box from the sewage inlet pipe is preheated by the arranged preheating mechanism, and the water in the preheating box can be continuously discharged into the preheating box from the water pipe, so that the water in the preheating box is heated, the sewage entering the spraying pipe has a certain temperature, and the ammonia distillation efficiency is improved; through the sewage inlet tube that sets up, the inside of shower is imported from the sewage inlet tube to the waste water that will contain ammonia and phenol, and then the shower sprays sewage downwards, and the ammonia in the sewage of being convenient for is evaporated by steam to take the inside condensation of condenser pipe to form the aqueous ammonia and then deviate from the ammonia in the sewage. The steam in the vaporizing chamber can be input into the combustion chamber through the steam guide pipe by the arranged fan for combustion.

(3) The function of water conservation can be played through the heat transfer mechanism who sets up, and the steam that forms from the combustion chamber burning can carry out the heat transfer condensation in the inside of heat transfer case, and then retrieves the comdenstion water, has avoided the problem of extravagant big water gaging. The gas in the combustion chamber can be input into the heat exchange box through the arranged gas inlet pipe, so that the outer wall of the water guide pipe is heated, the sewage subjected to primary ammonia removal in the water guide pipe is heated and evaporated, and ammonia evaporation is further realized; because the water guide pipe is communicated with the spray tower, the liquid level inside the spray tower is flush with the liquid level inside the water guide pipe, and the height of the liquid level is lower than the height of the communication port between the heat exchange box and the spray tower. Through the aqueduct that sets up, can preheat the leading-in inside to the heat transfer case of water inside the spray column, and then increased the temperature of spray column bottom, improved the heating efficiency to evaporating phenol sewage.

(4) The push rod moves under the driving of the motor, the push plate carried by the push rod moves, when the push plate moves in the water guide pipe, the push plate can stretch or contract through the second corrugated pipe to change the volume of water in the water guide pipe, thereby controlling the amount of water in the water guide pipe, controlling the heat of the steam conveyed from the inlet pipe and the steam conveyed from the combustion chamber, when the temperature of the gas in the air inlet pipe needs to be adjusted to be high, the second corrugated pipe is stretched in the water guide pipe, so that the volume in the water guide pipe is reduced, and the amount of the steam conveyed from the inlet pipe and the steam conveyed from the combustion chamber is reduced, so that the temperature of the gas entering the heat exchange box is increased, and the temperature of the steam is controlled to keep the temperature of the steam at 110-130 ℃.

(5) The device can realize the coupling integration with two kinds of technologies of evaporating ammonia and dephenolization, and the zero release is realized to burning phenol, and phenol steam utilizes heat transfer mechanism to realize realizing the vaporization to spray column bottom waste water. The device can also control the steam temperature, and steam supplements the import steam, and the water economy resource realizes evaporating phenol steam recycle, preheats the inside water of mechanism can directly preheating sewage inlet pipe, and the bottom waste water backward flow of spraying tower evaporates the ammonia once more through the cooperation with heat transfer mechanism, realizes further reducing bottom waste water ammonia content.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic view of the overall structure provided by the present invention;

FIG. 2 is a schematic view of the internal structure shown in FIG. 1;

FIG. 3 is an enlarged schematic view of the structure at A in FIG. 2;

FIG. 4 is an enlarged view of the structure at B of FIG. 2;

FIG. 5 is an enlarged view of the structure of FIG. 2 at C;

fig. 6 is a schematic view of the structure of the water conduit according to the present invention.

In the figure: 1. a heating mechanism; 11. a combustion furnace; 12. a combustion chamber; 121. a partition plate; 13. a heating chamber; 14. a vaporization chamber; 15. a flow guide pipe; 2. a heat exchange mechanism; 21. a heat exchange box; 211. a first bellows; 22. an air inlet pipe; 221. a water collection tank; 222. a movable plug; 23. an inlet pipe; 24. a water conduit; 241. pushing the plate; 242. a push rod; 243. a second bellows; 3. a spray tower; 4. a preheating mechanism; 41. a preheating box; 42. a sewage inlet pipe; 43. a sewage interface; 44. a drain pipe; 45. a water delivery pipe; 46. a water pump; 5. a gas delivery mechanism; 51. a fan; 52. a steam guide pipe; 6. a condenser tube; 7. and (4) a spray pipe.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1-6, the ammonia distillation and dephenolization coupling device for wastewater for semi-coke production comprises a heating mechanism 1, a spray tower 3 is erected above the heating mechanism 1, a heat exchange mechanism 2 is installed on the side wall of the spray tower 3, a preheating mechanism 4 is arranged on one side of the spray tower 3 away from the heat exchange mechanism 2, and the preheating mechanism 4 is connected with the heating mechanism 1; the heating mechanism 1 is provided with an air conveying mechanism 5; a spray pipe 7 is arranged in the spray tower 3, a water inlet of the spray pipe 7 is connected with the preheating mechanism 4, and a condensation pipe 6 is fixed on the side wall of the spray tower 3; can burn the steam that contains phenol through the heating mechanism 1 that sets up, and then make the phenol after the burning decompose into water and carbon dioxide, the steam that forms carries out the heat transfer from heat transfer mechanism 2's inside, heating mechanism 1 can also be to entering into the inside phenol-containing liquid heating of heating chamber 13, and then let behind the vaporization of phenol-containing liquid burn its inside of inputing combustion chamber 12 through gas transmission mechanism 5, through the preheating mechanism 4 that sets up, can preheat the inside water of aqueduct 24, and can practice thrift a large amount of water.

Specifically, the heating mechanism 1 comprises a combustion furnace 11, a combustion chamber 12 is arranged above the combustion furnace 11, a heating chamber 13 positioned above the combustion furnace 11 is arranged on one side of the combustion chamber 12, and a vaporizing chamber 14 for storing gas is arranged above the heating chamber 13; a guide pipe 15 is arranged above the vaporizing chamber 14, and the side wall of the guide pipe 15 is connected with a preheating mechanism 4. The provided combustion furnace 11 can heat the heating chamber 13 by the combustion furnace 11, and can also burn the phenol-containing gas in the combustion chamber 12, and the phenol-containing liquid in the heating chamber 13 can be heated to be vaporized by the provided vaporization chamber 14, and then enters the combustion chamber 12.

Specifically, an inclined partition plate 121 is provided inside the combustion chamber 12. The combustion chamber 12 is partitioned by the partition plate 121, and when the gas enters the combustion chamber 12 from the vaporization chamber 14, the gas will be combusted in the combustion chamber 12, and the partition plate 121 has a function of facilitating the entry of the combusted carbon dioxide and water into the heat exchange mechanism 2.

Specifically, the preheating mechanism 4 includes a water discharge pipe 44 connected to the flow guide pipe 15, an end portion of the water discharge pipe 44 far away from the flow guide pipe 15 is connected to an inside of the preheating tank 41, the preheating tank 41 is fixedly connected to the spray tower 3, a water delivery pipe 45 is connected to a side wall of the preheating tank 41, a water pump 46 is installed on a side wall of the water delivery pipe 45, and the water pump 46 is connected to the flow guide pipe 15. Preheat the mechanism 4 through the setting and come to enter into the inside part of preheating cabinet 41 to sewage inlet tube 42, the inside of preheating cabinet 41 can be continuous to be arranged from raceway 45 to the inside of preheating cabinet 41 to the inside water of preheating cabinet 41 for the inside water of preheating cabinet 41 is heated, can be preheated after sewage in the sewage inlet tube 42 enters into inside of preheating cabinet 41, and then make the inside sewage of entering into shower 7 have certain temperature, accelerate ammonia distillation efficiency.

Specifically, the preheating mechanism 4 further comprises a sewage inlet pipe 42, a sewage interface 43 is connected and communicated with the bottom of the sewage inlet pipe 42, and the sewage interface 43 is communicated with the spray pipe 7. Through the sewage inlet tube 42 that sets up, the inside of shower 7 is imported from sewage inlet tube 42 to the waste water that will contain ammonia and phenol, and then shower 7 sprays sewage downwards, and the ammonia in the sewage of being convenient for is evaporated by steam to the inside condensation that takes condenser pipe 6 forms the aqueous ammonia, and then deviates from the ammonia in the sewage.

Specifically, the gas transmission mechanism 5 comprises a gas guide pipe 52 fixed between the outer wall of the vaporizing chamber 14 and the outer wall of the combustion chamber 12, and a fan 51 is mounted on the gas guide pipe 52. The fan 51 is provided to feed the steam inside the vaporizing chamber 14 to the inside of the combustion chamber 12 through the steam guide pipe 52 for combustion.

Specifically, the heat exchange mechanism 2 comprises a heat exchange box 21 fixed on the side wall of the spray tower 3, the side wall of the heat exchange box 21 is connected with an inlet pipe 23 for inputting low-pressure steam, and the bottom of the heat exchange box 21 is provided with an inlet pipe 22. The function of the water conservation volume can be played through the heat exchange mechanism 2 who sets up, and the gas that forms from the combustion of combustion chamber 12 can condense in the inside of heat exchange box 21, and then retrieves the comdenstion water, has avoided the problem of extravagant big water gaging.

Specifically, a water collecting groove 221 is formed at the bottom of the air inlet pipe 22, and a movable plug 222 for discharging condensed water is arranged at the bottom of the water collecting groove 221. Can input the inside of heat transfer case 21 with the inside gas of combustion chamber 12 through the intake pipe 22 that sets up, and then heat the outer wall of aqueduct 24, and then reach and heat the inside sewage that removes ammonia for the first time of aqueduct 24, because aqueduct 24 and spray column 3 have formed the intercommunication, make spray column 3 inside and the inside liquid level of aqueduct 24 parallel and level mutually, and the height that highly will be less than the intercommunication mouth of heat transfer case 21 and spray column 3 department of liquid level.

Specifically, the heat exchange mechanism 2 further comprises a water guide pipe 24 arranged inside the heat exchange box 21, the water guide pipe 24 is of an L-shaped structure, the cross section of the water guide pipe 24 is square, and one end of the water guide pipe 24 is communicated with the bottom of the spray tower 3; through the aqueduct 24 that sets up, can preheat the leading-in inside to heat transfer case 21 of water inside spray column 3, and then increased the temperature of spray column 3 bottom, and improved the efficiency to the further deamination of the sewage of spray column 3 bottom, improved the heating efficiency to evaporating phenol sewage.

Specifically, a push plate 241 is arranged inside the water guide pipe 24, a second corrugated pipe 243 is connected to the push plate 241 in a sealing manner, the second corrugated pipe 243 is connected to the inner wall of the water guide pipe 24 in a sealing manner, a push rod 242 penetrating through the inside of the second corrugated pipe 243 is fixed to the surface of the push plate 241, a first corrugated pipe 211 is connected to the surface of the push rod 242, the joint of the first corrugated pipe 211 and the push rod 242 is sealed, the first corrugated pipe 211 is connected to the inner side wall of the heat exchange box 21 in a sealing manner, the push rod 242 is movably connected to the heat exchange box 21, and one end, far away from the push plate 241, of the push rod 242 is connected to a motor used for driving the. The push rod 242 is driven by the motor to move, the push plate 241 carried by the push rod 242 moves, when the push plate 241 moves in the water guide pipe 24, the push plate 241 can be stretched or contracted through the second corrugated pipe 243 to change the volume of water in the water guide pipe 24, so as to control the amount of water in the water guide pipe 24, further control the steam input from the inlet pipe 23 and the heat of the steam delivered by the combustion chamber 12, when the temperature of the gas in the air inlet pipe 22 needs to be increased, the second corrugated pipe 243 is stretched in the water guide pipe 24, so that the volume in the water guide pipe 24 is reduced, the steam input from the inlet pipe 23 and the steam delivered by the combustion chamber 12 enter the heat exchange box 21 from the air inlet pipe 22, and the amount of condensation of the steam delivered by the combustion chamber 12 is reduced, and further increase the temperature of the gas entering the heat exchange box 21, control steam temperature, the steam that the steam supply import pipe 23 that the combustion chamber 12 carried carries, water economy resource, realize evaporating phenol steam recycle, when needs turn down the inside gas temperature of intake pipe 22, make second bellows 243 compress in the inside of aqueduct 24, can make the inside volume grow of aqueduct 24, increase heat transfer area, and then make and enter into the inside gas temperature reduction of heat transfer case 21, thereby it is the same to guarantee to follow the temperature that combustion chamber 12 carried steam and follow the temperature that the import pipe 23 pours into, can reach the temperature requirement that accords with the ammonia still, be provided with the thermometer that is used for measuring the temperature in the inside of heat transfer case 21, the accessible computer plays the position of adjusting push pedal 241 to control motor's rotation, and then adjust the temperature of evaporating ammonia.

A coupling process for ammonia distillation and dephenolization of wastewater for semi coke production comprises the following steps:

the method comprises the following steps: steam is firstly input from an inlet pipe (23), and the temperature of the steam is as follows: 110 ℃ and 130 ℃, steam enters the spray tower (3) from the side wall of the spray tower (3) from the inside of the heat exchange box (21), when sewage entering the spray pipe (7) from the sewage inlet pipe (42) is sprayed into the spray tower (3), the sewage contacts with hot steam, the temperature of the sewage is raised, ammonia in the sewage is mixed with the steam and rises, and the condensed ammonia water is collected along with the condensation of the steam from the position of the condensation pipe (6), so that ammonia removal is completed;

step two: the bottom that spray tower (3) can be dropped to sewage after shower (7) sprayed, and sewage can gather in the inside of spray tower (3), and at this moment, the inside temperature of water of spray tower (3) is: 30-50 ℃, the spray tower (3) is communicated with the water guide pipe (24), the liquid level inside the spray tower (3) is flush with the liquid level inside the water guide pipe (24), at the moment, hot water at the bottom of the spray tower (3) is input into a water pipe (45) inside the heat exchange box (21) through a water pump (46), the water pipe (45) inputs water into a preheating box (41) to preheat sewage inside a sewage inlet pipe (42), the water inside the water pipe (45) guides the water from a guide pipe (15) into a heating chamber (13) through a drain pipe (44), further the water inside the heating chamber (13) is heated by a combustion furnace (11), further the water inside the heating chamber (13) is heated to 220 ℃ and 240 ℃, the water inside the heating chamber (13) is vaporized to evaporate phenol, and vaporized water vapor and volatile phenol are gathered inside a vaporizing chamber (14), the fan (51) inputs the mixture of vaporized steam and volatile phenol into the combustion chamber (12) from the steam guide pipe (52), the temperature in the combustion chamber (12) reaches 1110-1300 ℃ so as to completely combust the vaporized phenol, the combusted phenol forms gaseous water and carbon dioxide, the steam is input into the heat exchange box (21) from the inside of the air inlet pipe (22), at the moment, the water guide pipe (24) is heated, so that the water at the bottom of the spray tower (3) is heated and evaporated to further evaporate ammonia, and the evaporated ammonia gas, the steam conveyed by the combustion chamber (12) and the steam input by the inlet pipe (23) are mixed and enter the spray tower (3);

step three: when the temperature of the outer wall of the water guide pipe (24) is lower than the temperature inside the heat exchange box (21), the outer wall of the water guide pipe (24) can be aggregated to form condensed water, so that the condensed water can enter the inside of the water collection tank (221), when the water volume inside the water collection tank (221) reaches half of the volume of the water collection tank, the movable plug (222) is opened, so that the water volume flowing out of the movable plug (222) is equal to the condensed water volume, and further, high-temperature gas cannot overflow from the movable plug (222) during drainage;

step four: the motor drives the push rod (242) to move, the push plate (241) carried by the push rod (242) moves, when the push plate (241) moves in the water guide pipe (24) and the internal volume of the water guide pipe (24) needs to be reduced, the temperature of the water guide pipe (24) on steam conveyed from the combustion chamber (12) and steam input by the inlet pipe (23) is increased, the push plate (241) drives the second corrugated pipe (243) to move, and at the moment, the second corrugated pipe (243) moves towards the direction of the spray tower (3); when the internal volume of the water guide pipe (24) needs to be increased, the temperature of the water guide pipe to steam conveyed from the combustion chamber (12) and steam input by the inlet pipe (23) is reduced, the push plate (241) drives the second corrugated pipe (243) to move, at the moment, the second corrugated pipe (243) moves in the direction far away from the spray tower (3), and therefore the temperature of the steam conveyed from the combustion chamber (12) is guaranteed to be the same as the temperature of the steam injected from the inlet pipe (23).

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the embodiments and descriptions given above are only illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (9)

1. The ammonia distillation and dephenolization coupling device for the wastewater for semi-coke production is characterized by comprising a heating mechanism (1), wherein a spray tower (3) is erected above the heating mechanism (1), a heat exchange mechanism (2) is installed on the side wall of the spray tower (3), a preheating mechanism (4) is arranged on one side, away from the heat exchange mechanism (2), of the spray tower (3), and the preheating mechanism (4) is connected with the heating mechanism (1); the heating mechanism (1) is provided with a gas transmission mechanism (5); a spray pipe (7) is arranged in the spray tower (3), a water inlet of the spray pipe (7) is connected with the preheating mechanism (4), and a condensation pipe (6) is fixed on the side wall of the spray tower (3);

the heating mechanism (1) comprises a combustion furnace (11), a combustion chamber (12) is arranged above the combustion furnace (11), a heating chamber (13) positioned above the combustion furnace (11) is arranged on one side of the combustion chamber (12), and a vaporizing chamber (14) used for storing gas is arranged above the heating chamber (13);

a guide pipe (15) is arranged above the vaporizing chamber (14), and a preheating mechanism (4) is connected to the side wall of the guide pipe (15).

2. The ammonia distillation and dephenolization coupling device for semi-coke production wastewater as claimed in claim 1, wherein an inclined partition plate (121) is arranged inside the combustion chamber (12).

3. The ammonia distillation and dephenolization coupling device for semi-coke production wastewater as claimed in claim 2, wherein the preheating mechanism (4) comprises a drain pipe (44) connected with the guide pipe (15), the end of the drain pipe (44) far away from the guide pipe (15) is connected to the inside of the preheating tank (41), the preheating tank (41) is fixedly connected to the spray tower (3), the side wall of the preheating tank (41) is connected with a water pipe (45), the side wall of the water pipe (45) is provided with a water pump (46), and the water pump (46) is connected to the guide pipe (15).

4. The ammonia distillation and dephenolization coupling device for semi-coke production wastewater as claimed in claim 3, wherein the preheating mechanism (4) further comprises a sewage inlet pipe (42), a sewage interface (43) is connected and communicated with the bottom of the sewage inlet pipe (42), and the sewage interface (43) is communicated with the spray pipe (7).

5. The ammonia distillation and dephenolization coupling device for semi-coke production wastewater as claimed in claim 4, wherein the gas transmission mechanism (5) comprises a gas guide pipe (52) fixed between the outer wall of the vaporization chamber (14) and the outer wall of the combustion chamber (12), and a fan (51) is mounted on the gas guide pipe (52).

6. The ammonia distillation and dephenolization coupling device for semi-coke production wastewater as claimed in claim 5, wherein the heat exchange mechanism (2) comprises a heat exchange box (21) fixed on the side wall of the spray tower (3), the side wall of the heat exchange box (21) is connected with an inlet pipe (23) for inputting low-pressure steam, an air inlet pipe (22) is arranged at the bottom of the heat exchange box (21), a water collection tank (221) is arranged at the bottom of the air inlet pipe (22), and a movable plug (222) for discharging condensed water is arranged at the bottom of the water collection tank (221).

7. The semi-coke production wastewater ammonia distillation dephenolization coupling device as claimed in claim 6, wherein the heat exchange mechanism (2) further comprises a water guide pipe (24) arranged inside the heat exchange box (21), the water guide pipe (24) is of an L-shaped structure, the cross section of the water guide pipe (24) is square, and one end of the water guide pipe (24) is communicated with the bottom of the spray tower (3).

8. The ammonia distillation and dephenolization coupling device for semi-coke production wastewater according to claim 7, a push plate (241) is arranged in the water guide pipe (24), a second corrugated pipe (243) is hermetically connected to the push plate (241), the second corrugated pipe (243) is connected with the inner wall of the water guide pipe (24) in a sealing way, a push rod (242) penetrating through the inner part of the second corrugated pipe (243) is fixed on the surface of the push plate (241), a first corrugated pipe (211) is connected on the surface of the push rod (242), the joint of the first corrugated pipe (211) and the push rod (242) is sealed, the first corrugated pipe (211) is hermetically connected with the inner side wall of the heat exchange box (21), the push rod (242) is movably connected with the heat exchange box (21), and one end, far away from the push plate (241), of the push rod (242) is connected with a motor used for driving the push rod (242) to move in a reciprocating mode.

9. The ammonia distillation and dephenolization coupling process for the wastewater for semi-coke production is characterized by comprising the following steps of:

the method comprises the following steps: steam is firstly input from an inlet pipe (23), and the temperature of the steam is as follows: 110 ℃ and 130 ℃, steam enters the spray tower (3) from the side wall of the spray tower (3) from the inside of the heat exchange box (21), when sewage entering the spray pipe (7) from the sewage inlet pipe (42) is sprayed into the spray tower (3), the sewage contacts with hot steam, the temperature of the sewage is raised, ammonia in the sewage is mixed with the steam and rises, and the condensed ammonia water is collected along with the condensation of the steam from the position of the condensation pipe (6), so that ammonia removal is completed;

step two: the bottom that spray tower (3) can be dropped to sewage after shower (7) sprayed, and sewage can gather in the inside of spray tower (3), and at this moment, the inside temperature of water of spray tower (3) is: 30-50 ℃, the spray tower (3) is communicated with the water guide pipe (24), the liquid level inside the spray tower (3) is flush with the liquid level inside the water guide pipe (24), at the moment, hot water at the bottom of the spray tower (3) is input into a water pipe (45) inside the heat exchange box (21) through a water pump (46), the water pipe (45) inputs water into a preheating box (41) to preheat sewage inside a sewage inlet pipe (42), the water inside the water pipe (45) guides the water from a guide pipe (15) into a heating chamber (13) through a drain pipe (44), further the water inside the heating chamber (13) is heated by a combustion furnace (11), further the water inside the heating chamber (13) is heated to 220 ℃ and 240 ℃, the water inside the heating chamber (13) is vaporized to evaporate phenol, and vaporized water vapor and volatile phenol are gathered inside a vaporizing chamber (14), the fan (51) inputs the mixture of vaporized steam and volatile phenol into the combustion chamber (12) from the steam guide pipe (52), the temperature in the combustion chamber (12) reaches 1110-1300 ℃ so as to completely combust the vaporized phenol, the combusted phenol forms gaseous water and carbon dioxide, the steam is input into the heat exchange box (21) from the inside of the air inlet pipe (22), at the moment, the water guide pipe (24) is heated, so that the water at the bottom of the spray tower (3) is heated and evaporated to further evaporate ammonia, and the evaporated ammonia gas, the steam conveyed by the combustion chamber (12) and the steam input by the inlet pipe (23) are mixed and enter the spray tower (3);

step three: when the temperature of the outer wall of the water guide pipe (24) is lower than the temperature inside the heat exchange box (21), the outer wall of the water guide pipe (24) can be aggregated to form condensed water, so that the condensed water can enter the inside of the water collection tank (221), when the water volume inside the water collection tank (221) reaches half of the volume of the water collection tank, the movable plug (222) is opened, so that the water volume flowing out of the movable plug (222) is equal to the condensed water volume, and further, high-temperature gas cannot overflow from the movable plug (222) during drainage;

step four: the motor drives the push rod (242) to move, the push plate (241) carried by the push rod (242) moves, when the push plate (241) moves in the water guide pipe (24) and the internal volume of the water guide pipe (24) needs to be reduced, the temperature of the water guide pipe (24) on steam conveyed from the combustion chamber (12) and steam input by the inlet pipe (23) is increased, the push plate (241) drives the second corrugated pipe (243) to move, and at the moment, the second corrugated pipe (243) moves towards the direction of the spray tower (3); when the internal volume of the water guide pipe (24) needs to be increased, the temperature of the water guide pipe to steam conveyed from the combustion chamber (12) and steam input by the inlet pipe (23) is reduced, the push plate (241) drives the second corrugated pipe (243) to move, at the moment, the second corrugated pipe (243) moves in the direction far away from the spray tower (3), and therefore the temperature of the steam conveyed from the combustion chamber (12) is guaranteed to be the same as the temperature of the steam injected from the inlet pipe (23).

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