CN211586005U - Ammonia escape control system - Google Patents
Ammonia escape control system Download PDFInfo
- Publication number
- CN211586005U CN211586005U CN202020202402.0U CN202020202402U CN211586005U CN 211586005 U CN211586005 U CN 211586005U CN 202020202402 U CN202020202402 U CN 202020202402U CN 211586005 U CN211586005 U CN 211586005U
- Authority
- CN
- China
- Prior art keywords
- absorbent
- water
- pipe
- absorption tower
- flue
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses an ammonia escape control system, wherein, contain the absorption tower and connect respectively in flue system, absorbent conveying system, absorbent absorption system, accessory substance processing system, water conveying system, the control terminal difference control connection of absorption tower flue system, absorbent conveying system, absorbent absorption system, accessory substance processing system, water conveying system can connect the absorption tower through the flue system, absorbent conveying system, absorbent absorption system, accessory substance processing system, the cooperation of water conveying system that adopt independent setting, reduce the concentration of ammonia inside the absorption tower, ensure that the cement factory accomplishes the ammonia emission of nitrogen oxide ultralow simultaneous control ammonia emission below national standard on minimum cost basis, simple structure, convenient to use.
Description
Technical Field
The utility model relates to an environment-friendly device field, concretely relates to ammonia escape control system.
Background
Ammonia gas, a gas with a strong pungent smell, has irritation to the nose, throat and lungs after being inhaled, and causes cough, shortness of breath, asthma and the like; edema of larynx and lung, and damage to heart, liver and kidney in severe cases; burn can be caused when the eye is splashed into eyes, and burn can be caused when skin is contacted; oral burn of the digestive tract; chronic effects: repeated low concentration contact can cause bronchitis and dermatitis.
As is well known, the important reducing agent for denitration reaction of the cement plant is ammonia water, and the ammonia gas can selectively reduce NOx in the flue gas at the temperature of 850-1100 ℃ in a decomposing furnace without the action of a catalyst and basically does not react with O in the flue gas2Thus, the SNCR method has been developed; in the range of 850-1100 ℃, the main reaction is as follows: 4NH3+4NO+O2→4N2+6H2O。
The optimum reaction temperature zone of the ammonia gas is 850-110O ℃, when the reaction temperature is too high, the NOx reduction rate is reduced due to the decomposition of the ammonia, and on the other hand, when the reaction temperature is too low, the escape of the ammonia is increased, and the NOx reduction rate is also reduced; ammonia gas is a highly volatile and toxic substance, and escape of ammonia causes new environmental pollution.
Two reasons for causing the ammonia escape of the SNCR system exist, firstly, the reaction of ammonia and NOx is influenced due to the low temperature of the flue gas at the injection point; another possibility is that the injected reductant is excessive or the reductant is unevenly distributed, and the reductant injection system must be capable of injecting the reductant into the most effective part of the furnace, because the distribution of NOx in the furnace is often changed, if too few control points are injected or the distribution of ammonia injected on a certain cross section in the furnace is uneven, a higher ammonia escape amount is generated; in larger cross-section furnaces or smokers, uniform distribution of the reducing agent is more difficult because longer injection distances require coverage of a considerable cross-section of the furnace; to ensure the denitration reaction can be fully performedThe best reduction effect is achieved by the least amount of injected ammonia, and the injected ammonia and the flue gas are well mixed; if the injected ammonia gas is not fully reacted, the escaped ammonia gas can not only make the fly ash in the flue gas easily deposited on the inner surface of the equipment, but also make NH in the flue gas3Encounter S03Will generate (NH)4)2S04There is a risk of corrosion to downstream equipment.
The Chinese invention patent 201310233883.6 relates to an absorption tower for combined removal of sulfur dioxide and nitrogen oxide in flue gas, the invention patent 201210581015.2 relates to a flue gas ammonia desulfurization and deslagging system, the invention patent 201210143824.5 relates to an advanced oxidation catalysis desulfurization and denitrification integrated process and device, and the utility model patent 200910198724.6 relates to a packless empty tower spray type ammonia flue gas desulfurization device, which all provide desulfurization devices, but the devices are complicated and inconvenient to use.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that solve can cause ammonia to escape when the use to the aqueous ammonia in the cement plant, environmental pollution can be caused in the escape of ammonia, the utility model provides an ammonia escape control system, can cooperate the use on 2019 application number 201910489417.1's that 6 th day of 6 application on with this company on the patent basis, further control ammonia escape on the basis of ultralow emission to the cement plant, adopt independent setting's flue system, absorbent conveying system, absorbent absorption system, byproduct processing system, the absorption tower is connected in the cooperation of water conveying system, reduce the concentration of ammonia inside the absorption tower, guarantee that the cement plant accomplishes the ammonia escape emission of simultaneous control of nitrogen oxide ultralow emission below national standard on the lowest cost basis, moreover, the steam generator is simple in structure, and convenient to use is used for solving the defect that prior art leads to.
In order to solve the technical problem, the utility model provides a following technical scheme:
an ammonia escape control system comprises an absorption tower, a flue system, an absorbent conveying system, an absorbent absorption system, a byproduct treatment system and a water conveying system, wherein the flue system, the absorbent conveying system, the absorbent absorption system, the byproduct treatment system and the water conveying system are respectively connected to the absorption tower, and a control terminal is respectively connected with the flue system, the absorbent conveying system, the absorbent absorption system, the byproduct treatment system and the water conveying system in a control mode.
The above ammonia escape control system, wherein the flue system includes a tail exhaust fan, a tail exhaust chimney, and a tail exhaust chimney damper, the tail exhaust chimney damper is installed inside the tail exhaust chimney to divide the inside of the tail exhaust chimney into a first chamber and a second chamber, one end of the tail exhaust chimney near the first chamber is provided with an exhaust port and connected with an outlet flue pipe communicated with the outlet of the absorption tower, one end of the tail exhaust chimney near the second chamber is connected with a fan pipe communicated with the tail exhaust fan and an inlet flue pipe communicated with the tower body of the absorption tower;
an outlet flue damper is arranged in the outlet flue pipe, and an inlet flue damper is arranged in the inlet flue pipe;
the control terminal is respectively connected with the tail smoke chimney baffle door, the outlet flue baffle door and the inlet flue baffle door in a control mode to be opened or closed, so that the circulation of smoke and the adjustment of the smoke trend are facilitated;
the outlet flue pipe and the inlet flue pipe adopt a steel flue, are connected with the absorption tower and the tail smoke chimney in an airtight welding mode or a flange connection mode, provide low-level drainage measures for the outlet flue pipe and the inlet flue pipe and carry out anti-corrosion treatment, and are internally provided with supporting and reinforcing members for reinforcing, so that the stability and durability of the flue are ensured;
in the existing cement plant process system, flue gas is directly discharged into the atmosphere through a chimney, the flue gas in the technical scheme firstly enters the absorption tower through the inlet flue pipe on the tail discharge chimney for reaction, and the reacted clean flue gas returns to the tail discharge chimney through the outlet flue pipe for standard discharge.
The ammonia escape control system comprises an absorbent liquid tank, an absorbent delivery pump and an absorbent delivery pipeline, wherein the absorbent delivery pump is connected to the absorbent delivery pipeline, and two ends of the absorbent delivery pipeline are respectively communicated with the absorption tower and the absorbent liquid tank;
the absorbent liquid box is provided with a connecting interface which is externally connected with a liquid inlet device, the absorbent is arranged in the liquid inlet device, and the liquid inlet device conducts the introduction of the absorbent with the absorbent liquid box through the connecting interface;
the absorbent liquid tank is provided with a liquid tank remote transmission liquid level meter, the liquid tank remote transmission liquid level meter is connected with the control terminal to realize data interaction, and the liquid tank remote transmission liquid level meter detects liquid level data of an absorbent in the absorbent liquid tank in real time and sends the liquid level data to the control terminal for monitoring so as to supplement the absorbent;
the control terminal is connected with the absorbent delivery pump in a control mode, fresh absorbent is introduced into the absorption tower, and the concentration of ammonia gas is reduced through the reaction of the absorbent and the flue gas in the absorption tower;
the absorbent is mainly provided according to the numerical value of ammonia escape in on-line monitoring, and when the numerical value of ammonia escape in on-line monitoring rises, fresh absorbent can be judged and supplemented in time to ensure that the numerical value of ammonia escape reaches the standard.
In the ammonia escape control system, two absorbent conveying pipelines are arranged in parallel, and each absorbent conveying pipeline is connected with the absorbent conveying pump.
The ammonia escape control system comprises an absorbent circulating pump, a circulating conveying pipeline and a spraying assembly, wherein the spraying assembly comprises a spraying pipeline arranged inside the absorption tower and a nozzle arranged on the spraying pipeline, the absorbent circulating pump is connected to the circulating conveying pipeline, two ends of the circulating conveying pipeline are respectively communicated with the absorption tower and the spraying pipeline, the nozzle is arranged on the upper side of the joint of the circulating conveying pipeline and the absorption tower, and the nozzle is used for spraying an absorbent out so as to be convenient for reacting with ammonia gas in flue gas;
the absorbent is kept at the bottom of the absorption tower after entering the absorption tower, the absorbent circulating pump extracts the absorbent and guides the absorbent to the nozzle for spraying, the absorbent continuously contacts with the flue gas in a reverse direction for reaction when falling due to gravity, so that the reaction efficiency with the ammonia gas is improved, the full reaction is facilitated, and the escaped ammonia is removed;
the control terminal is connected with the absorbent circulating pump in a control mode.
In the ammonia escape control system, the plurality of spray pipelines are arranged at positions above the middle part of the absorption tower, and each spray pipeline is provided with a plurality of nozzles;
and one end of the spraying pipeline extending out of the absorption tower is communicated with the circulating conveying pipeline.
Foretell an ammonia escape control system, wherein, water conveying system contains water tank, water pump, water pipe, defroster, the defroster install in the inside of absorption tower and set up in the upside of nozzle, install the shower nozzle on the defroster, the water pump is connected on the water pipe, the both ends of water pipe respectively with the defroster the water tank intercommunication, water passes through the shower nozzle is spouted into the absorption tower guarantees that flue gas liquid droplet content is not more than 75mg/Nm3(dry basis);
the water tank is provided with a connecting pipe, the connecting pipe is provided with a water replenishing valve, and the other end of the connecting pipe is externally connected with a water inlet device;
the water tank is provided with a water level remote transmission liquid level meter, the water level remote transmission liquid level meter is connected with the control terminal to realize data interaction, and the water level remote transmission liquid level meter detects liquid level data of water in the water tank in real time and sends the liquid level data to the control terminal for monitoring so as to supplement the water;
the control terminal is respectively connected with the water pump, the demister and the water replenishing valve in a control mode;
the water conveying system mainly ensures that the moisture content of the flue gas reaches the standard and other impurity gases are removed after ammonia is removed, and can ensure that the content of liquid drops in the flue gas is not more than 75mg/Nm after water is sprayed into the flue gas by the water pump3(dry basis) and emission monitoring smoke valuesAnd (5) reaching the standard.
In the ammonia escape control system, two water pipes are arranged in parallel, and each water pipe is connected with the water pump;
the defroster is provided with a plurality ofly, every all be equipped with a plurality of shower nozzles on the defroster.
The ammonia escape control system comprises a discharge pump and a discharge pipe, wherein the discharge pump is connected to the discharge pipe, one end of the discharge pipe is connected to the bottom of the absorption tower, the other end of the discharge pipe is externally connected with a byproduct treatment device, the byproduct treatment device is mainly a plant area treatment process system and comprises whole plant water source collection and disposal, and the specific process is mature and reliable for a cement plant;
the byproduct treatment system is mainly operated by monitoring an ammonia escape value on line through observing a plant area, when the ammonia escape value rises, the discharge pump can be started regularly to discharge liquid in the absorption tower, the absorbent absorption system is operated, and a fresh absorbent is supplemented to ensure the stable operation of the ammonia removal system so as to ensure the standard reaching of the ammonia escape monitored on line.
According to above-mentioned the utility model relates to a technical scheme that ammonia escape control system provided has following technological effect: the absorption tower is connected with the flue system, the absorbent conveying system, the absorbent absorption system, the byproduct treatment system and the water conveying system which are independently arranged in a matching way, so that the concentration of ammonia in the absorption tower is reduced, the ultralow emission of nitrogen oxides in a cement plant is ensured on the basis of the lowest cost, and the ammonia escape emission is controlled to be below the national standard, the structure is simple, and the use is convenient;
the application and invention patent 201310233883.6 are an absorption tower for combined removal of sulfur dioxide and nitrogen oxides in flue gas, invention patent 201210581015.2 flue gas ammonia desulfurization and deslagging system, invention patent 201210143824.5 advanced oxidation catalysis desulfurization and denitrification integrated process and device, and utility model patent 200910198724.6 a packless empty tower spray type ammonia flue gas desulfurization device mainly has the following differences:
1. the absorption tower is of an empty tower structure, and is different from the structure of a filler tower in an absorption tower for combined removal of sulfur dioxide and nitrogen oxide in flue gas in patent 201310233883.6;
2. the absorbent in the application is a liquid absorbent, does not contain nitrogen and does not contain ammonia, is different from a flue gas ammonia desulphurization deslagging system disclosed in patent 201210581015.2, is ammonia water, and is mainly used for removing ammonia escape in an ammonia escape patent, so that ammonia cannot be generated; also different from the 201210143824.5 advanced oxidation catalytic desulfurization and denitrification integrated process and device, ozone is adopted as an oxidant;
3. the absorbent in this application is liquid absorbent, consequently does not establish the agitator in the absorption tower, need not blow into the oxidation air, this point is different from 201210143824.5 advanced oxidation catalysis SOx/NOx control integration technology and device, 201210581015.2 flue gas ammonia process desulfurization deslagging system, sulfur dioxide in the patent 201310233883.6 combination desorption flue gas, the absorption tower of nitrogen oxide, a no filler sky tower sprays type ammonia process flue gas desulphurization unit of patent 200910198724.6, other similar wet flue gas desulfurization also generally sets up the oxidation air, this point has great difference.
Drawings
Fig. 1 is a schematic structural diagram of an ammonia escape control system according to the present invention.
Wherein the reference numbers are as follows:
the absorption tower comprises an absorption tower 101, a tail exhaust fan 102, a tail exhaust chimney 103, a tail exhaust chimney damper 104, a first chamber 105, a second chamber 106, an exhaust port 107, an outlet flue pipe 108, a fan pipeline 109, an inlet flue pipe 110, an outlet flue damper 111, an inlet flue damper 112, an absorbent liquid tank 113, an absorbent delivery pump 114, an absorbent delivery pipe 115, a connecting interface 116, a liquid tank remote liquid level meter 117, an absorbent circulating pump 118, a circulating delivery pipe 119, a spraying pipe 120, a nozzle 121, a water tank 122, a water pump 123, a water pipe 124, a demister 125, a spray head 126, a connecting pipe 127, a water replenishing valve 128, an exhaust pump 129 and an exhaust pipe 130.
Detailed Description
In order to make the technical means, the inventive features, the objectives, and the functions of the present invention easy to understand and understand, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that the present invention can achieve.
Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.
The utility model discloses a preferred embodiment provides an ammonia escape control system, and the absorption tower is connected in the cooperation of flue system, absorbent conveying system, absorbent absorption system, byproduct processing system, the water conveying system that the purpose adopted independent setting, reduces the concentration of ammonia inside the absorption tower, ensures that the cement factory accomplishes on the lowest cost basis that nitrogen oxide is minimum and controls ammonia escape emission below national standard, simple structure, convenient to use when discharging.
As shown in fig. 1, an ammonia slip control system includes an absorption tower 101, and a flue system, an absorbent delivery system, an absorbent absorption system, a byproduct treatment system, and a water delivery system respectively connected to the absorption tower 101, wherein a control terminal respectively controls and connects the flue system, the absorbent delivery system, the absorbent absorption system, the byproduct treatment system, and the water delivery system.
The flue system comprises a tail exhaust fan 102, a tail exhaust chimney 103 and a tail exhaust chimney damper 104, wherein the tail exhaust chimney damper 104 is installed inside the tail exhaust chimney 103 to divide the interior of the tail exhaust chimney 103 into a first chamber 105 and a second chamber 106, one end of the tail exhaust chimney 103 close to the first chamber 105 is provided with an exhaust port 107 and is connected with an outlet flue pipe 108 communicated with an outlet of the absorption tower 101, and one end of the tail exhaust chimney 103 close to the second chamber 106 is connected with a fan pipeline 109 communicated with the tail exhaust fan 102 and an inlet flue pipe 110 communicated with the tower body of the absorption tower 101;
the control terminal is a PC terminal;
an outlet flue damper 111 is mounted inside the outlet flue pipe 108, and an inlet flue damper 112 is mounted inside the inlet flue pipe 110;
the control terminal respectively controls the opening or closing of the tail smoke chimney baffle door 104, the outlet smoke chimney baffle door 111 and the inlet smoke chimney baffle door 112, so that smoke circulation and smoke direction adjustment are facilitated, when the tail smoke ventilator 102 is started to accelerate smoke circulation, the tail smoke chimney baffle door 104 and the outlet smoke chimney baffle door 111 are in a closed state at first, the inlet smoke chimney baffle door 112 is opened, and after smoke enters the absorption tower 101 for reaction, the outlet smoke chimney baffle door 111 is opened, so that clean smoke flows to the first chamber 105 and is discharged through the exhaust port 107;
the outlet flue pipe 108 and the inlet flue pipe 110 adopt a steel flue, the steel flue is connected with the absorption tower 101 and the tail smoke chimney 103 in an airtight welding mode or a flange connection mode, the outlet flue pipe 108 and the inlet flue pipe 110 provide low-level drainage measures and carry out anti-corrosion treatment, and support reinforcements are arranged inside the outlet flue pipe 108 and the inlet flue pipe 110 for reinforcement to ensure that the flue is stable and durable;
in the existing cement plant process system, the flue gas is directly discharged into the atmosphere through a chimney, the flue gas in the technical scheme firstly enters the absorption tower 101 through an inlet flue pipe 110 on a tail discharge chimney 103 for reaction, and the reacted clean flue gas returns to the tail discharge chimney 103 through an outlet flue pipe 108 for standard discharge.
The absorbent conveying system comprises an absorbent liquid tank 113, an absorbent conveying pump 114 and an absorbent conveying pipeline 115, wherein the absorbent conveying pump 114 is connected to the absorbent conveying pipeline 115, and two ends of the absorbent conveying pipeline 115 are respectively communicated with the absorption tower 101 and the absorbent liquid tank 113;
the absorbent liquid tank 113 is provided with a connecting interface 116, the connecting interface 116 is externally connected with a liquid inlet device, the absorbent is arranged in the liquid inlet device, and the liquid inlet device conducts introduction of the absorbent through the connecting interface 116 and the absorbent liquid tank 113;
the absorbent liquid tank 113 is provided with a liquid tank remote transmission liquid level meter 117, the liquid tank remote transmission liquid level meter 117 is connected with the control terminal to realize data interaction, and the liquid tank remote transmission liquid level meter 117 detects liquid level data of the absorbent in the absorbent liquid tank 113 in real time and sends the liquid level data to the control terminal for monitoring so as to supplement the absorbent;
the control terminal is connected with an absorbent delivery pump 114 in a control mode, fresh absorbent is introduced into the absorption tower 101, and the concentration of ammonia gas is reduced through the reaction of the absorbent and flue gas in the absorption tower 101;
the absorbent is mainly provided according to the numerical value of ammonia escape in on-line monitoring, and when the numerical value of ammonia escape in on-line monitoring rises, fresh absorbent can be judged and supplemented in time to ensure that the numerical value of ammonia escape reaches the standard.
Wherein, two absorbent conveying pipelines 115 are arranged in parallel, and each absorbent conveying pipeline 115 is connected with an absorbent conveying pump 114.
The absorbent absorption system comprises an absorbent circulating pump 118, a circulating conveying pipeline 119 and a spraying assembly, the spraying assembly comprises a spraying pipeline 120 arranged inside the absorption tower 101 and a nozzle 121 arranged on the spraying pipeline 120, the absorbent circulating pump 118 is connected to the circulating conveying pipeline 119, two ends of the circulating conveying pipeline 119 are respectively communicated with the absorption tower 101 and the spraying pipeline, the nozzle 121 is arranged on the upper side of the connection part of the circulating conveying pipeline 119 and the absorption tower 101, and the nozzle 121 is used for spraying an absorbent out to be convenient for reacting with ammonia in flue gas;
the absorbent is kept at the bottom of the absorption tower 101 after entering the absorption tower 101, the absorbent is pumped by the absorbent circulating pump 118 and is guided to the nozzle 121 to be sprayed out, and the absorbent continuously contacts with the flue gas in the reverse direction to react when falling due to gravity, so that the reaction efficiency with the ammonia gas is improved, the full reaction is facilitated, and the escaped ammonia is removed;
the control terminal is connected with an absorbent circulating pump 118.
Wherein, a plurality of spray pipelines 120 are arranged and installed above the middle part of the absorption tower 101, and each spray pipeline 120 is provided with a plurality of nozzles 121;
one end of the spray pipe 120 extending out of the absorption tower 101 is communicated with a circulating conveying pipe 119.
Wherein, water conveying system contains water tank 122, water pump 123, water pipe 124, defroster 125, and defroster 125 installs in the inside of absorption tower 101 and sets up in the upside of nozzle 121, installs shower nozzle 126 on defroster 125, and water pump 123 is connected on water pipe 124, and the both ends of water pipe 124 communicate with defroster 125, water tank 122 respectively, and water spouts into absorption tower 101 through shower nozzle 126, guarantees that flue gas liquid droplet content is not more than 75mg/Nm3(dry basis);
the water tank 122 is provided with a connecting pipe 127, the connecting pipe 127 is provided with a water replenishing valve 128, and the other end of the connecting pipe 127 is externally connected with a water inlet device;
a water level remote transmission liquid level meter is arranged on the water tank 122, the water level remote transmission liquid level meter is connected with a control terminal to realize data interaction, and the water level remote transmission liquid level meter detects liquid level data of water in the water tank 122 in real time and sends the liquid level data to the control terminal for monitoring so as to supplement the water;
the control terminal is respectively connected with the water pump 123, the demister 125 and the water replenishing valve 128 in a control mode;
the water conveying system mainly ensures that the moisture content of the flue gas reaches the standard after ammonia is removed and other impurity gases are removed, and after water is sprayed into the flue gas through the water pump 123, the content of liquid drops in the flue gas can be ensured to be not more than 75mg/Nm3(dry basis) and emission monitoring smoke values reach the standard.
Wherein, two water pipes 124 are arranged in parallel, and each water pipe 124 is connected with a water pump 123;
the demister 125 is provided in plurality, and each demister 125 is provided with a plurality of spray heads 126.
The byproduct treatment system comprises a discharge pump 129 and a discharge pipe 130, wherein the discharge pump 129 is connected to the discharge pipe 130, one end of the discharge pipe 130 is connected to the bottom of the absorption tower 101, the other end of the discharge pipe 130 is externally connected with a byproduct treatment device, the byproduct treatment device is mainly a plant area treatment process system and comprises the collection and disposal of whole plant water sources, and the specific process is mature and reliable for a cement plant;
the byproduct treatment system is mainly operated by monitoring an ammonia escape value on line through observing a plant area, when the ammonia escape value rises, the discharge pump 129 can be started regularly to discharge liquid in the absorption tower 101, the absorbent absorption system is operated, and a fresh absorbent is supplemented to ensure the stable operation of the ammonia removal system so as to ensure the standard reaching of the ammonia escape monitored on line.
In a second aspect, a second embodiment, a method for ammonia slip control, comprising:
step 1: the flue gas is introduced into the absorption tower 101 and stored in the second chamber 106, the control terminal controls the closing of the tail flue damper 104 and the outlet flue damper 111, controls the opening of the inlet flue damper 112, introduces the flue gas into the absorption tower 101 for reaction, and when the tail exhaust fan 102 is started to accelerate the circulation of the flue gas;
step 2: the absorbent is introduced into the absorption tower 101 and stored in the absorbent liquid tank 113, the control terminal controls the absorbent conveying pump 114 to be started to introduce the absorbent into the absorption tower 101 from the absorbent liquid tank 113, and the absorbent reacts with part of the flue gas in the absorption tower 101;
and step 3: spraying an absorbent, wherein the control terminal controls an absorbent circulating pump 118 to be started to introduce the absorbent at the bottom of the absorption tower 101 into a nozzle 120 for spraying, and the sprayed absorbent is fully reacted with the flue gas in the absorption tower 101 so as to be conveniently reacted with ammonia gas in the flue gas;
water is introduced into the absorption tower 101 and stored in the water tank 122, the control terminal controls the water pump 123 to be started to introduce the water from the water tank 112 into the spray head 126 for spraying, and the sprayed water is fully mixed with the flue gas in the absorption tower 101;
and 4, step 4: when the reaction is finished, the flue gas is reacted into clean flue gas, the control terminal controls the opening of the outlet flue damper 111, the clean flue gas flow is discharged through the exhaust port 107 after being led into the first chamber 103, and the tail flue damper 104 is in a closed state.
Wherein, a byproduct is generated in the absorption tower after the reaction in the step 4 is completed, and the treatment steps of the byproduct are as follows: the control terminal controls the discharge pump 129 to be turned on, and the discharge pump 129 discharges the by-product in the absorption tower 101 to the by-product treatment apparatus through the discharge pipe 130.
To sum up, the utility model discloses an ammonia escape control system can connect the absorption tower through flue system, absorbent conveying system, absorbent absorption system, byproduct processing system, the cooperation of water conveying system that adopt independent setting, reduces the concentration of ammonia inside the absorption tower, ensures that the cement plant accomplishes the ultralow emission of nitrogen oxide when controlling ammonia escape emission below national standard, simple structure, convenient to use on the minimum cost basis.
The above description has been made of specific embodiments of the present invention. It is to be understood that the invention is not limited to the particular embodiments described above, and that devices and structures not described in detail are understood to be implemented in a manner common in the art; various changes or modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention.
Claims (9)
1. An ammonia escape control system is characterized by comprising an absorption tower, a flue system, an absorbent conveying system, an absorbent absorption system, a byproduct treatment system and a water conveying system, wherein the flue system, the absorbent conveying system, the absorbent absorption system, the byproduct treatment system and the water conveying system are respectively connected to the absorption tower, and a control terminal is respectively connected with the flue system, the absorbent conveying system, the absorbent absorption system, the byproduct treatment system and the water conveying system in a control mode.
2. The ammonia escape control system of claim 1, wherein the flue system comprises a tail exhaust fan, a tail exhaust chimney and a tail exhaust chimney baffle door, the tail exhaust chimney baffle door is installed inside the tail exhaust chimney to divide the interior of the tail exhaust chimney into a first chamber and a second chamber, one end of the tail exhaust chimney close to the first chamber is provided with an exhaust port and is connected with an outlet flue pipe communicated with the outlet of the absorption tower, one end of the tail exhaust chimney close to the second chamber is connected with a fan pipeline communicated with the tail exhaust fan and an inlet flue pipe communicated with the tower body of the absorption tower;
an outlet flue damper is arranged in the outlet flue pipe, and an inlet flue damper is arranged in the inlet flue pipe;
and the control terminal is respectively connected with the tail smoke chimney baffle door, the outlet flue baffle door and the inlet flue baffle door in a control mode.
3. An ammonia escape control system as claimed in claim 1 or 2, wherein said absorbent delivery system comprises an absorbent liquid tank, an absorbent delivery pump, and an absorbent delivery pipeline, said absorbent delivery pump is connected to said absorbent delivery pipeline, and both ends of said absorbent delivery pipeline are respectively communicated with said absorption tower and said absorbent liquid tank;
the absorbent liquid box is provided with a connecting interface which is externally connected with a liquid inlet device;
a liquid tank remote transmission liquid level meter is arranged on the absorbent liquid tank, and the liquid tank remote transmission liquid level meter is connected with the control terminal to realize data interaction;
the control terminal is connected with the absorbent delivery pump in a control mode.
4. An ammonia slip control system as claimed in claim 3, wherein two absorbent delivery lines are provided in parallel, each absorbent delivery line being connected to an absorbent delivery pump.
5. The ammonia slip control system according to claim 1, 2 or 4, wherein the absorbent absorption system comprises an absorbent circulation pump, a circulation delivery pipe, and a spray assembly, the spray assembly comprises a spray pipe disposed inside the absorption tower and a nozzle installed on the spray pipe, the absorbent circulation pump is connected to the circulation delivery pipe, both ends of the circulation delivery pipe are respectively communicated with the absorption tower and the spray pipe, and the nozzle is disposed on the upper side of the connection of the circulation delivery pipe and the absorption tower;
the control terminal is connected with the absorbent circulating pump in a control mode.
6. The ammonia escape control system of claim 5, wherein said spray lines are provided in a plurality and installed above the middle of said absorber tower, each of said spray lines having a plurality of spray nozzles installed thereon;
and one end of the spraying pipeline extending out of the absorption tower is communicated with the circulating conveying pipeline.
7. The ammonia escape control system of claim 6, wherein the water delivery system comprises a water tank, a water pump, a water pipe, and a demister, the demister is installed inside the absorption tower and disposed on the upper side of the nozzle, a spray head is installed on the demister, the water pump is connected to the water pipe, and two ends of the water pipe are respectively communicated with the demister and the water tank;
the water tank is provided with a connecting pipe, the connecting pipe is provided with a water replenishing valve, and the other end of the connecting pipe is externally connected with a water inlet device;
a water level remote transmission liquid level meter is arranged on the water tank and is connected with the control terminal to realize data interaction;
the control terminal is respectively connected with the water pump, the demister and the water replenishing valve in a control mode.
8. An ammonia escape control system as claimed in claim 7, wherein two of said water pipes are arranged side by side, each of said water pipes being connected to said water pump;
the defroster is provided with a plurality ofly, every all be equipped with a plurality of shower nozzles on the defroster.
9. An ammonia slip control system as claimed in claim 1, 2, 4, 6 or 8, wherein said byproduct disposal system comprises a discharge pump, a discharge pipe, said discharge pump being connected to said discharge pipe, one end of said discharge pipe being connected to the bottom of said absorption tower, and the other end of said discharge pipe being externally connected to a byproduct disposal device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020202402.0U CN211586005U (en) | 2020-02-24 | 2020-02-24 | Ammonia escape control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020202402.0U CN211586005U (en) | 2020-02-24 | 2020-02-24 | Ammonia escape control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211586005U true CN211586005U (en) | 2020-09-29 |
Family
ID=72581424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020202402.0U Active CN211586005U (en) | 2020-02-24 | 2020-02-24 | Ammonia escape control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211586005U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111068502A (en) * | 2020-02-24 | 2020-04-28 | 上海三融环保工程有限公司 | Ammonia escape control system and control method |
-
2020
- 2020-02-24 CN CN202020202402.0U patent/CN211586005U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111068502A (en) * | 2020-02-24 | 2020-04-28 | 上海三融环保工程有限公司 | Ammonia escape control system and control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108246075B (en) | Pelletizing denitration method for flue gas | |
| CN212974688U (en) | Low temperature SOx/NOx control integration equipment | |
| CN211586005U (en) | Ammonia escape control system | |
| CN204865530U (en) | Spout calcium desulfurization low temperature denitrification facility in coal fired boiler flue gas stove | |
| CN109529616A (en) | Cement kiln equipment for denitrifying flue gas | |
| CN111068502A (en) | Ammonia escape control system and control method | |
| CN214389564U (en) | NOx gas phase oxidation and coordinated desulfurization and denitrification dust removal system in biomass boiler flue gas | |
| CN106178877A (en) | A kind of coke oven flue waste gas purification waste heat recovery apparatus and technique | |
| CN109364747A (en) | A kind of collecting smoke dust from coke oven desulphurization system and technique | |
| CN219646952U (en) | Adiabatic cyclone dust collector and flue gas treatment facility | |
| CN208553761U (en) | A kind of the denitrating flue gas unit and device of charged spray ammonia and ammonolysis craft combination | |
| CN202962241U (en) | Device for synergistically removing flue gas mercury | |
| CN107854993A (en) | A kind of flue gas processing device | |
| CN108114591A (en) | A kind of flue gas processing method | |
| CN210993704U (en) | Flue gas desulfurization device for coke oven ground dust removal station | |
| CN209188469U (en) | A kind of energy saving smoke desulfuring and denitrifying apparatus | |
| CN207871902U (en) | A kind of flue gas processing device | |
| CN208436656U (en) | A kind of gas furnace desulphurization and dust removal integrated device | |
| CN203764107U (en) | Integrated low-temperature flue gas desulfurization and denitrification ammonia removal device | |
| CN207822759U (en) | A kind of dehumidification device of flue gas processing device | |
| CN206560788U (en) | Selective sour gas control system | |
| CN110523276A (en) | A kind of flue gas processing device and its method | |
| CN205627569U (en) | Comprehensive denitration treatment system of flue gas | |
| CN209060866U (en) | A kind of combined denitration device | |
| CN219441122U (en) | Coal-fired flue gas desulfurization and denitrification equipment for preventing and controlling atmospheric pollution |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |