CN110790336A - Device for extracting ammonia gas in semi-coke wastewater and preparing nitrogen fertilizer - Google Patents
Device for extracting ammonia gas in semi-coke wastewater and preparing nitrogen fertilizer Download PDFInfo
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- CN110790336A CN110790336A CN201911136590.XA CN201911136590A CN110790336A CN 110790336 A CN110790336 A CN 110790336A CN 201911136590 A CN201911136590 A CN 201911136590A CN 110790336 A CN110790336 A CN 110790336A
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- pipe
- tank
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- wastewater
- ammonia
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/02—Preparation, purification or separation of ammonia
- C01C1/022—Preparation of aqueous ammonia solutions, i.e. ammonia water
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/02—Preparation, purification or separation of ammonia
- C01C1/024—Purification
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C3/00—Fertilisers containing other salts of ammonia or ammonia itself, e.g. gas liquor
Abstract
The invention discloses a device for extracting ammonia gas in semi-coke wastewater and using the ammonia gas to prepare a nitrogen fertilizer, and belongs to the technical field of wastewater treatment in semi-coke. The device disclosed by the invention comprises a wastewater tank, a condenser, an ammonia water tank and a reaction tank, wherein the wastewater tank is connected with the condenser through a connecting pipe, and the condenser is connected with the ammonia water tank through a condensing pipe; a water inlet pipe for introducing semi-coke wastewater is arranged at the bottom of one side wall of the wastewater tank, and a steam pipe for introducing steam is arranged at the upper part of the same side wall. The ammonia overflows into the steam from the semi-coke wastewater under the action of concentration difference, is carried into the condenser along with the flow of the steam, and flows into the ammonia tank through the condensing pipe by circulating cooling water in the condenser to be recycled. CO is arranged on the side wall of the reaction tank2Air inlet pipe, ammonia water and CO2And combining in a reaction tank to obtain the nitrogen fertilizer. The structure of the deviceSimple and compact, safe operation, realizes the extraction of ammonia in the semi-coke wastewater, prepares the ammonia into the nitrogen fertilizer, and has the characteristics of high ammonia recovery efficiency and high nitrogen fertilizer preparation efficiency.
Description
Technical Field
The invention belongs to the technical field of wastewater treatment in preparation of semi-coke by low-temperature coal carbonization, and relates to a device for extracting ammonia gas from semi-coke wastewater to prepare nitrogen fertilizer.
Background
When the semi-coke is prepared by adopting low-temperature coal carbonization and the coal tar is generated by condensing raw gas, a large amount of coke quenching wastewater and coal tar condensation wastewater are discharged, wherein high-concentration ammonia gas is dissolved, if the wastewater is discharged into the environment without being treated, the ammonia dissolved in the wastewater can volatilize into the atmosphere, so that the ammonia gas concentration in a plant area is high, workers and surrounding residents inhale a large amount of ammonia gas and can seriously damage the body health, and effective measures are necessary to be taken to remove the ammonia gas in the semi-coke wastewater. Although the existing research institutions propose that pollutants in the semi-coke wastewater are treated by adopting an MPA method and a permeable membrane technology, the technology has a good effect on treating phenols in the semi-coke wastewater, and can only remove 50% of ammonia in the semi-coke wastewater, so that the removal capacity is limited. In addition, ammonia has wide application in the chemical industry. Therefore, more advanced treatment devices are needed to enhance the recovery and utilization of ammonia in semi-coke wastewater.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide the device for extracting the ammonia gas in the semi-coke wastewater by adopting the gas stripping method and preparing the nitrogen fertilizer product by using the obtained ammonia gas.
The invention is realized by the following technical scheme:
the invention discloses a device for extracting ammonia gas in semi-coke wastewater and preparing nitrogen fertilizer, which comprises a wastewater tank, a condenser, an ammonia tank and a reaction tank;
a water inlet pipe is arranged at the bottom of the wastewater tank, and a steam pipe is arranged on the side wall of the wastewater tank; the discharge port of the wastewater tank is connected with the inlet of a condenser, the outlet of the condenser is connected with the feed port of an ammonia water tank through a condensing pipe, the discharge port of the ammonia water tank is connected with the feed port of a reaction tank through an ammonia water pipe, and the ammonia water pipe is provided with an ammonia water valve; CO is arranged on the side wall of the reaction tank2An air inlet pipe, and a discharge hole is arranged at the bottom of the reaction tank.
Preferably, a mixed air pressure meter and a mixed air temperature meter are arranged at the top of the waste water tank.
Further preferably, the top of the waste water tank is provided with an exhaust pipe, the exhaust pipe is provided with an exhaust valve, the steam pipe is provided with a steam pressure meter and a steam stop valve, and the water inlet pipe is provided with a water inlet valve.
Preferably, the bottom of the condenser is connected with a cold water pipe, and the tail end of the cold water pipe is connected with a circulating water pump.
Preferably, the ammonia water pipe extends into the reaction tank, and the end of the extending part is connected with the nozzle.
Preferably, the reaction tank is provided with a viewing hole, a pressure gauge and a thermometer.
Preferably, CO2The air inlet pipe is provided with CO2An intake valve.
Preferably, discharge gate department sets gradually taper pipe and straight tube from top to bottom, is equipped with the ball valve on the straight tube, and the exit of straight tube is equipped with the nitrogenous fertilizer collecting vat.
Further preferably, the inside of the reaction tank is provided with a wire mesh, and the conical tube is internally provided with a support for supporting the wire mesh.
Still further preferably, the side wall of the conical tube is provided with a hole, a vibrating rod is inserted in the hole, and the vibrating rod is connected with the bracket.
Compared with the prior art, the invention has the following beneficial effects:
according to the device for extracting ammonia gas from semi-coke wastewater and using the ammonia gas to prepare nitrogen fertilizer, disclosed by the invention, the water inlet pipe and the steam pipe are arranged on the wastewater tank, so that water vapor can be introduced into the wastewater tank filled with semi-coke wastewater, a reaction site for extracting ammonia gas from the semi-coke wastewater is provided, the ammonia gas can overflow into the steam from the semi-coke wastewater under the action of concentration difference, and the extraction of the ammonia gas is realized; the condenser and the condenser pipe are arranged, so that the water vapor containing ammonia can be cooled into liquid ammonia water; by arranging the ammonia water tank and the ammonia water valve, when the ammonia water valve is closed, the ammonia water flowing into the ammonia water tank can be collected, and when the ammonia water valve is opened, the ammonia water can enter the reaction tank for subsequent reaction; by arranging a reaction tank and CO2An air inlet pipe for providing ammonia water and CO2The reaction site for synthesizing the nitrogen fertilizer realizes the purpose of preparing the nitrogen fertilizer from the ammonia gas extracted from the semi-coke wastewater; through set up the discharge gate in the retort bottom, can break away from the reaction system and collect the nitrogenous fertilizer result that makes. The invention discloses a method for extracting ammonia gas in semi-coke wastewaterA device for preparing nitrogenous fertilizer, reasonable in design, connection are compact, have realized extracting, cooling, collecting and with CO ammonia in proper order in blue charcoal waste water2The treatment of the synthetic nitrogen fertilizer has the characteristics of safety, environmental protection and high efficiency.
Further, the mixed gas pressure meter and the mixed gas temperature meter which are arranged at the top of the waste water tank can read out the pressure and the temperature during reaction, so that the ammonia extraction reaction can be monitored, the use safety of the device is ensured, and the extraction efficiency is increased.
Furthermore, the exhaust valve, the steam stop valve and the water inlet valve are arranged in corresponding different connecting pipelines and are matched with the readings of the mixed gas pressure meter and the mixed gas temperature meter, so that the extraction reaction process of the ammonia gas in the semi-coke wastewater can be effectively controlled, and an extraction reaction system of the ammonia gas has energy conservation and environmental protection.
Further, the tail end of the ammonia water pipe extending into the reaction tank is connected with a nozzle, so that ammonia water and CO are sprayed into the reaction tank2The contact is more sufficient, and the synthesis conversion rate of the ammonia water is increased.
Further, through set up observation hole, manometer and thermometer on the middle part jar body at the retort, can monitor nitrogen fertilizer preparation reaction, guarantee synthesizer's safe in utilization, promote synthetic efficiency.
Further, by setting CO2The air inlet valve effectively controls the feeding of reactants and is matched with the observation hole, the pressure gauge and the thermometer, so that the feeding use efficiency is improved.
Furthermore, by arranging the wire netting in the reaction tank, arranging the bracket in the conical tube and supporting the wire netting in the reaction tank through the bracket, the ammonia water and the CO are increased2The nitrogen fertilizer product crystals are dispersed on the iron frame, and the conversion rate of the nitrogen fertilizer synthesis reaction is improved.
And further, connecting a vibrating rod on the support, vibrating the wire mesh through the support by vibrating the vibrating rod, and collecting the synthesized nitrogen fertilizer product crystal.
Further, through setting up ball valve and nitrogen fertilizer collecting vat, can control the result and collect time and collect the state, avoid introducing impurity.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Wherein: 1 is a steam pipe; 2 is a steam pressure gauge; 3 is a steam stop valve; 4 is a waste water tank; 5 is a mixed gas pressure meter; 6 is a mixed air temperature table; 7 is an exhaust pipe; 8 is an exhaust valve; 9 is a connecting pipe; 10 is a condenser; 11 is a drain pipe; 12 is a drain valve; 13 is a condenser pipe; 14 is a condensing valve; 15 is an ammonia water tank; 16 is a circulating water pump; 17 is a cold water stop valve; 18 is a cold water pipe; 19 is a water inlet valve; 20 is a water inlet pipe; 21 is semi-coke wastewater; 22 is a stop valve; 23 is an ammonia valve; 24 is an ammonia water pipe; 25 is a reaction tank; 26 is a wire mesh; 27 is CO2An intake valve; 28 is CO2An air inlet pipe; 29 is a conical tube; 30 is a ball valve; 31 is a bracket; 32 is a nozzle; 33 is a nitrogen fertilizer collecting tank; 34 a viewing aperture; 35 is a pressure gauge; 36 is a thermometer; 37 is a vibrating rod; 38 are straight tubes.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The invention is described in further detail below with reference to the accompanying drawings:
referring to fig. 1, the apparatus comprises:
the semi-coke wastewater 21 is filled in the wastewater tank 4. The top of the waste water tank 4 is provided with a mixed gas pressure gauge 5, a mixed gas temperature gauge 6 and an exhaust pipe 7, and the exhaust pipe 7 is provided with an exhaust valve 8. A steam pipe 1 is arranged above the side wall of the waste water tank 4, a steam pressure gauge 2 and a steam stop valve 3 are arranged on the steam pipe 1, a water inlet pipe 20 is arranged below the side wall, and a water inlet valve 19 is arranged on the water inlet pipe 20. A connecting pipe 9 is arranged on the other side wall of the waste water tank 4, the other end of the connecting pipe 9 is connected with a condenser 10, and a stop valve 22 is arranged on the connecting pipe 9. The bottom of the condenser 10 is provided with a cold water pipe 18, a cold water stop valve 17 is arranged on the cold water pipe 18, and the tail part of the cold water pipe is connected with a circulating water pump 16. The top of the condenser 10 is provided with a drain pipe 11 on which a drain valve 12 is mounted. The condenser 10 is connected with an ammonia water tank 15 through a condensing pipe 13, and a condensing valve 14 is arranged on the condensing pipe 13; an ammonia water pipe 24 is arranged below the ammonia water tank 15, and an ammonia water valve 23 is arranged on the ammonia water pipe 24; the other end of the ammonia pipe 24 extends into the reaction tank 25 by 50mm, and the tail end of the ammonia pipe is connected with the nozzle 32; a straight pipe 38 is connected to the small end of the conical pipe 29, a ball valve 30 is arranged on the straight pipe 38, a support 31 is arranged inside the conical pipe 29, and the tail end of the support 31 is connected with the wire netting 26; a nitrogen fertilizer collecting tank 33 is arranged below the straight pipe 38; an observation hole 34, a pressure gauge 35 and a thermometer 36 are arranged on the middle tank body of the reaction tank 25.
The invention discloses a device for extracting ammonia gas in semi-coke wastewater for preparing nitrogen fertilizer, which comprises the following steps:
the steam stop valve 3 and the stop valve 22 are closed, the exhaust valve 8 and the water inlet valve 19 are opened, and the semi-coke wastewater 21 is added into the wastewater tank 4. Then the water inlet valve 19 and the exhaust valve 8 are closed, the steam stop valve 3 and the stop valve 22 are opened, the steam flows into the waste water tank 4 from the steam pipe 1, the semi-coke waste water 21 in the steam is lifted into the steam and enters the condenser 10 through the connecting pipe 9,the ammonia water is condensed into ammonia water under the cooling water, the ammonia water flows into an ammonia water tank 15 along a condensation pipe 13, and the ammonia gas in the semi-coke wastewater is recovered and changed into the ammonia water. The ammonia water in the ammonia water tank 15 flows through the ammonia water pipe 24 and then flows into the nozzle 32 to be sprayed on the wire netting 26 placed in the reaction tank 25, and the ammonia water droplets are fully distributed on the surface of the wire netting 26; opening of CO2Inlet valve, CO2CO from below the reaction tank 252The inlet pipe 28 is fed in countercurrent to the reaction tank 25, CO2The gas flows through the wire mesh 26 and fully contacts with the ammonia solution distributed on the wire mesh, and the following reaction occurs:
NH3+H2O+CO2→NH4HCO3
the crystals of the ammonium bicarbonate nitrogen fertilizer are solid particles, are separated from the wire netting 26 under the action of the vibrating rod 37 and are accumulated in the conical pipe 29, the ball valve 30 arranged on the straight pipe 38 is opened, the prepared ammonium bicarbonate nitrogen fertilizer crystals fall into the nitrogen fertilizer collecting tank 33, the amount of the ammonium bicarbonate nitrogen fertilizer crystals on the wire netting 26 is checked from the observation hole 34 every 2 hours, and the opening time of the ball valve 30 and the vibrating time of the vibrating rod 37 are determined.
The above-mentioned contents are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modification made on the basis of the technical idea of the present invention falls within the protection scope of the claims of the present invention.
Claims (10)
1. A device for extracting ammonia gas in semi-coke wastewater for preparing nitrogen fertilizer is characterized by comprising a wastewater tank (4), a condenser (10), an ammonia water tank (15) and a reaction tank (25);
a water inlet pipe (20) is arranged at the bottom of the wastewater tank (4), and a steam pipe (1) is arranged on the side wall of the wastewater tank; a discharge hole of the waste water tank (4) is connected with an inlet of a condenser (10), an outlet of the condenser (10) is connected with a feeding hole of an ammonia water tank (15) through a condensing pipe (13), a discharge hole of the ammonia water tank (15) is connected with a feeding hole of a reaction tank (25) through an ammonia water pipe (24), and the ammonia water pipe (24) is provided with an ammonia water valve (23); CO is arranged on the side wall of the reaction tank (25)2An air inlet pipe (28) and a discharge hole are arranged at the bottom of the reaction tank (25).
2. The device for extracting ammonia gas in semi-coke wastewater for preparing nitrogen fertilizer as claimed in claim 1, wherein the top of the wastewater tank (4) is provided with a mixed gas pressure gauge (5) and a mixed gas temperature gauge (6).
3. The device for extracting ammonia gas in semi-coke wastewater for preparing nitrogen fertilizer according to claim 2, wherein an exhaust pipe (7) is arranged at the top of the wastewater tank (4), an exhaust valve (8) is arranged on the exhaust pipe (7), a steam pressure gauge (2) and a steam stop valve (3) are arranged on the steam pipe (1), and a water inlet valve (19) is arranged on the water inlet pipe (20).
4. The device for extracting ammonia gas in semi-coke wastewater for preparing nitrogen fertilizer according to claim 1, wherein a cold water pipe (18) is connected to the bottom of the condenser (10), and the tail end of the cold water pipe (18) is connected with a circulating water pump (16).
5. The apparatus for extracting ammonia gas in semi-coke wastewater for nitrogen fertilizer production as claimed in claim 1, wherein the ammonia water pipe (24) extends into the reaction tank (25), and the end of the extending part is connected with the nozzle (32).
6. The device for extracting ammonia gas in semi-coke wastewater for preparing nitrogen fertilizer as claimed in claim 1, wherein the reaction tank (25) is provided with a viewing hole (34), a pressure gauge (35) and a thermometer (36).
7. The device for extracting ammonia gas in semi-coke wastewater for preparing nitrogen fertilizer according to claim 1, characterized in that CO is2The air inlet pipe (28) is provided with CO2An intake valve (27).
8. The device for extracting ammonia gas in semi-coke wastewater for preparing nitrogen fertilizer according to claim 1, wherein a conical pipe (29) and a straight pipe (38) are arranged at the discharge outlet from top to bottom in sequence, a ball valve (30) is arranged on the straight pipe (38), and a nitrogen fertilizer collecting tank (33) is arranged at the outlet of the straight pipe (38).
9. The device for extracting ammonia gas in semi-coke wastewater for preparing nitrogen fertilizer as claimed in claim 8, wherein the inside of the reaction tank (25) is provided with the wire netting (26), and the inside of the conical tube (29) is provided with the bracket (31) for supporting the wire netting (26).
10. The device for extracting ammonia gas in semi-coke wastewater for preparing nitrogen fertilizer as claimed in claim 9, wherein holes are opened on the side wall of the conical tube (29), vibrating rods (37) are inserted in the holes, and the vibrating rods (37) are connected with the bracket (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911136590.XA CN110790336A (en) | 2019-11-19 | 2019-11-19 | Device for extracting ammonia gas in semi-coke wastewater and preparing nitrogen fertilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911136590.XA CN110790336A (en) | 2019-11-19 | 2019-11-19 | Device for extracting ammonia gas in semi-coke wastewater and preparing nitrogen fertilizer |
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| Publication Number | Publication Date |
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| CN110790336A true CN110790336A (en) | 2020-02-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911136590.XA Pending CN110790336A (en) | 2019-11-19 | 2019-11-19 | Device for extracting ammonia gas in semi-coke wastewater and preparing nitrogen fertilizer |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86102509A (en) * | 1986-09-15 | 1988-03-30 | 华东化工学院 | Method of ammonium/carbon balance is produced bicarbonate of ammonia |
| CN101830483A (en) * | 2010-03-10 | 2010-09-15 | 厦门市威士邦膜科技有限公司 | Production method for synthesizing ammonium bicarbonate fertilizer by using CO2 waste gas |
| CN205151819U (en) * | 2015-11-27 | 2016-04-13 | 榆林学院 | Adopt air stripping method to get rid of device of ammonia in blue charcoal waste water |
| WO2019213461A1 (en) * | 2018-05-02 | 2019-11-07 | California Organic Fertilizers, Inc. | Organic nitrogenous fertilizers |
-
2019
- 2019-11-19 CN CN201911136590.XA patent/CN110790336A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86102509A (en) * | 1986-09-15 | 1988-03-30 | 华东化工学院 | Method of ammonium/carbon balance is produced bicarbonate of ammonia |
| CN101830483A (en) * | 2010-03-10 | 2010-09-15 | 厦门市威士邦膜科技有限公司 | Production method for synthesizing ammonium bicarbonate fertilizer by using CO2 waste gas |
| CN205151819U (en) * | 2015-11-27 | 2016-04-13 | 榆林学院 | Adopt air stripping method to get rid of device of ammonia in blue charcoal waste water |
| WO2019213461A1 (en) * | 2018-05-02 | 2019-11-07 | California Organic Fertilizers, Inc. | Organic nitrogenous fertilizers |
Non-Patent Citations (1)
| Title |
|---|
| 钱颂文、吴家声: "《化工设备及设计》", 30 November 1990, 华中理工大学出版社 * |
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Application publication date: 20200214 |