CN104258706A - Chemical treatment system for thermal power plant - Google Patents
Chemical treatment system for thermal power plant Download PDFInfo
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- CN104258706A CN104258706A CN201410476712.0A CN201410476712A CN104258706A CN 104258706 A CN104258706 A CN 104258706A CN 201410476712 A CN201410476712 A CN 201410476712A CN 104258706 A CN104258706 A CN 104258706A
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- ammoniacal liquor
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Abstract
The invention discloses a chemical treatment system for a thermal power plant. The chemical treatment system comprises an ammonia-method denitration system and a chemical water treatment system, wherein the ammonia-method denitration system comprises an ammonia supplying device (1); the chemical water treatment system comprises an ammonia water preparation device B which comprises an ammonia water tank (2), and the ammonia water tank (2) is communicated with the ammonia supplying device (1) through an ammonia supplying pipeline (3) and is communicated with a demineralized water pipeline of the thermal power plant through a water supplying pipeline (4); an ammonia supplying on-off valve (5) and a water supplying on-off valve (6) are arranged on the ammonia supplying pipeline (3) and the water supplying pipeline (4), respectively. According to the chemical treatment system for the thermal power plant, ammonia water can be safely prepared, so that the labor intensity of workers is reduced, the physical harm to the workers is reduced, and the environmental pollution is reduced.
Description
Technical field
The present invention relates to a kind of thermal power plant field, particularly, relate to a kind of thermal power plant chemical processing system.
Background technology
At present, thermal power plant's Water Treatment ammoniacal liquor generally adopts buy retail high concentration ammoniacal liquor or little canned liquefied ammonia at chemical workshop configuration low concentration ammoniacal liquor, and this manufacturing technique requirent operations staff amount of labour is larger; Ammonia volatilization also can cause operating personnel's respiratory system to injure, and jeopardizes personal safety, and pollutes the environment; Too increase the management and control risk of production scene harmful substance long-term storage dangerous matter sources simultaneously.
Therefore, how at the ammoniacal liquor of thermal power plant's security configuration for Water Treatment, the problem that those skilled in the art need to solve is become.
Summary of the invention
The object of this invention is to provide a kind of thermal power plant chemical processing system, this thermal power plant's chemical processing system can security configuration ammoniacal liquor, thus reduce personnel labor intensity, reduces the actual bodily harm of personnel and reduce environmental pollution.
To achieve these goals, the invention provides a kind of thermal power plant chemical processing system, comprise ammonia-method denitration system and chemical water treatment system, wherein, described ammonia-method denitration system comprises for ammonia device, and described chemical water treatment system comprises ammoniacal liquor inking device, and described ammoniacal liquor inking device comprises ammoniacal liquor case, described ammoniacal liquor case is by being communicated with for ammonia device with described for ammonia pipeline, and described ammoniacal liquor case is by supply channel and thermal power plant's demineralized water pipeline connection; Arrange respectively for ammonia open and close valve and water supply open and close valve on ammonia pipeline and described supply channel.
Preferably, the described ammonia device that supplies comprises the liquid ammonia storage tank, evaporimeter and the ammonia surge tank that connect successively, and described ammonia surge tank is communicated with described ammoniacal liquor case for ammonia pipeline by described.
Preferably, described ammonia pipeline and the described ammoniacal liquor case of supplying is by the first pipeline connection, described first pipeline extends in described ammoniacal liquor case, the part that described first pipeline is positioned at outside described ammoniacal liquor case is provided with check valve, and the end that described first pipeline stretches in described ammoniacal liquor case is provided with nozzle.
Preferably, the described ammonia pipeline that supplies is connected for ammonia device with described by the second pipeline, and described second pipeline is provided with filter screen and Pressure gauge.
Preferably, described ammoniacal liquor case is provided with the high level switch and low liquid-level switch that are electrically connected with described water supply open and close valve, and when in described ammoniacal liquor case, liquid level is equal to or higher than described high level switch, described high level switch is closed closes to control described water supply open and close valve; When in described ammoniacal liquor case, liquid level is equal to or less than low liquid-level switch, described low liquid-level switch is closed to be opened to control described water supply open and close valve.
Preferably, described ammoniacal liquor case is arranged the conductivity gauge for detecting the ammonia concn in described ammoniacal liquor case, and described conductivity gauge is electrically connected for ammonia open and close valve with described;
When the reading of described conductivity gauge is lower than the first setting value, the low junction closure of described conductivity gauge is described for the unlatching of ammonia open and close valve to make; When the reading of described conductivity gauge is higher than the second setting value, the high junction closure of described conductivity gauge is described for the closedown of ammonia open and close valve to make; Wherein, described first setting value is lower than described second setting value.
Preferably, described ammoniacal liquor case arranges agitator.
Preferably, described be provided with for ammonia pipeline be positioned at the described both sides for ammonia open and close valve pipeline section on be respectively equipped with for ammonia hand-operated valve, be describedly parallel with for ammonia shunt valve for ammonia pipeline, be describedly provided with for ammonia bypass valve for ammonia shunt valve.
Preferably, the pipeline section described supply channel being positioned at the both sides of described water supply open and close valve is respectively equipped with water supply hand-operated valve, and described supply channel is parallel with water supply shunt valve, and described water supply shunt valve is provided with water supply bypass valve.
Preferably, the outlet of described ammoniacal liquor case is connected with measuring pump.
The present invention utilizes the ammonia for ammonia device generation of thermal power plant's ammonia-method denitration to be supplied in the ammoniacal liquor case in ammoniacal liquor inking device, and configuration is for ammonia device supplying ammonia pipeline and supplying ammonia open and close valve to ammoniacal liquor case, and thermal power plant's demineralized water pipeline is to the supply channel of ammoniacal liquor case and water supply open and close valve, achieve ammoniacal liquor mechanical arrangements, do not need personnel at chemical workshop configuration low concentration ammoniacal liquor, reduce labour intensity and the actual bodily harm of personnel, be convenient to realize remote monitoring and unattended, decrease the storage of hazardous point of Hazardous Chemical Substances, realize centralized management, reduce environmental pollution.Optimize ammonia-method denitration system and the chemical water treatment system of thermal power plant simultaneously.
Other features and advantages of the present invention are described in detail in detailed description of the invention part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for description, is used from explanation the present invention, but is not construed as limiting the invention with detailed description of the invention one below.In the accompanying drawings:
Fig. 1 is the structural representation of embodiment of the present invention;
Fig. 2 is the structural representation of ammoniacal liquor inking device in Fig. 1.
Description of reference numerals
1 for ammonia device 2 ammoniacal liquor case
3 for ammonia pipeline 4 supply channel
5 to supply water open and close valve for ammonia open and close valves 6
7 check valve 8 nozzles
The low liquid-level switch of 9 high level switch 10
11 conductivity gauge 12 agitators
13 supply ammonia shunt valve for ammonia hand-operated valve 14
15 to supply water hand-operated valve for ammonia bypass valves 16
17 water supply shunt valves 18 supply water bypass valve
19 measuring pump 20 filter screens
21 Pressure gauge 1a liquid ammonia storage tanks
1b evaporimeter 1c ammonia surge tank
A out of stock device B ammoniacal liquor inking device
1d is for ammonia pressure valve
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.Should be understood that, detailed description of the invention described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
In the present invention, when not doing contrary explanation, the noun of locality such as " upper and lower, left and right " of use typically refers to reference to upper and lower, left and right shown in the drawings; " inside and outside " refers to profile inside and outside relative to each parts itself.
According to an aspect of the present invention, a kind of thermal power plant chemical processing system is provided, this thermal power plant's chemical processing system comprises ammonia-method denitration system and chemical water treatment system, wherein, described ammonia-method denitration system comprises for ammonia device 1, and described chemical water treatment system comprises ammoniacal liquor case inking device B, and described ammoniacal liquor case inking device B comprises ammoniacal liquor case 2, described ammoniacal liquor case 2 is by being communicated with for ammonia device 1 with described for ammonia pipeline 3, and described ammoniacal liquor case 2 is by supply channel 4 and thermal power plant's demineralized water pipeline connection; Arrange respectively for ammonia open and close valve 5 and water supply open and close valve 6 on ammonia pipeline 3 and described supply channel 4.
Wherein, ammonia-method denitration system is that a kind of ammonia and oxynitrides of utilizing reacts the system generating ammonia, the out of stock device A supplying ammonia device 1 and be connected with this confession ammonia device 1 is provided with in the out of stock system of this ammonia process, the redox reaction of ammonia and oxynitrides is there is, for ammonia device 1 for this out of stock device A provides ammonia in out of stock device A.Chemical water treatment system is the system adopting the water of chemical substance to thermal power plant to process, and wherein, the chemical substance of Water Treatment comprises low concentration ammoniacal liquor, and this chemical water treatment system comprises ammoniacal liquor case inking device B, to configure required low concentration ammoniacal liquor.
The present invention improves thermal power plant of the prior art Water Treatment ammoniacal liquor configuration technique.Be specially, described ammoniacal liquor case inking device B comprises ammoniacal liquor case 2, ammonia is delivered in ammoniacal liquor case 2 by supplying ammonia pipeline 3 by the ammonia device 1 that supplies in the out of stock system of ammonia process, and be provided with for ammonia open and close valve 5 for ammonia pipeline 3 to control the opening and closing of this confession ammonia pipeline 3, when needs supply ammonia in ammoniacal liquor case 2, then open for ammonia open and close valve 5, be now in conducting state for ammonia pipeline 3, ammonia can be delivered in ammoniacal liquor case 2; When the ammonia concentration in ammoniacal liquor case 2 reach need time, then close for ammonia open and close valve 5, be now in blocking state for ammonia pipeline 3, ammonia just cannot be delivered in ammoniacal liquor case 2.
In addition, the present invention adopts the demineralized water of thermal power plant (being namely in the water of salinity) to be used as the solvent of configuration needed for ammoniacal liquor, ammoniacal liquor case 2 and thermal power plant's demineralized water pipeline is communicated with by supply channel 4, and this supply channel 4 is provided with water supply open and close valve 6, to control the break-make of this supply channel 4, when needs supply demineralized water in ammoniacal liquor case 2, then open water supply open and close valve 6, now supply channel 4 is in conducting state, demineralized water can be delivered in ammoniacal liquor case 2; When the demineralized water volume in ammoniacal liquor case 2 reach need time, then close water supply open and close valve 6, now supply channel 4 is in blocking state, and demineralized water just cannot be delivered in ammoniacal liquor case 2.
The present invention utilizes the ammonia for ammonia device 1 generation of thermal power plant's ammonia-method denitration to be supplied in the ammoniacal liquor case 2 in ammoniacal liquor inking device B, and configuration supplying ammonia pipeline 3 and supplying ammonia open and close valve 5 for ammonia device 1 to ammoniacal liquor case 2, and thermal power plant's demineralized water pipeline is to the supply channel 4 of ammoniacal liquor case 2 and water supply open and close valve 6, achieve ammoniacal liquor mechanical arrangements, do not need personnel at chemical workshop configuration low concentration ammoniacal liquor, reduce labour intensity and the actual bodily harm of personnel, be convenient to realize remote monitoring and unattended, decrease the storage of hazardous point of Hazardous Chemical Substances, realize centralized management, reduce environmental pollution.Optimize ammonia-method denitration system and the chemical water treatment system of thermal power plant simultaneously.
Wherein, the described ammonia device 1 that supplies comprises liquid ammonia storage tank 1a, the evaporimeter 1b and ammonia surge tank 1c that connect successively, and described ammonia surge tank 1c is communicated with described ammoniacal liquor case 2 for ammonia pipeline 3 by described.Fill liquefied ammonia in described liquid ammonia storage tank 1a, the ammonia in this liquid ammonia storage tank 1a forms ammonia after evaporator 1b evaporation, and the ammonia after evaporation enters in liquid ammonia storage tank 1a, and liquid ammonia storage tank 1a is connected with out of stock device A and ammoniacal liquor case inking device B respectively.Therefore, this confession ammonia device 1 is simultaneously for out of stock device A and ammoniacal liquor case inking device B provides ammonia.Liquid ammonia storage tank 1a is connected with evaporimeter 1b by pipeline, this pipeline is provided with for ammonia pressure valve 1d, this confession ammonia pressure valve 1d can be specifically choke valve, can control the flow of liquid ammonia storage tank 1a to the liquefied ammonia in evaporimeter 1b by this confession ammonia pressure valve, thus controls for ammonia pressure.
In addition, described ammonia pipeline 3 and the described ammoniacal liquor case 2 of supplying is by the first pipeline connection, described first pipeline extends in described ammoniacal liquor case 2, the part that described first pipeline is positioned at outside described ammoniacal liquor case 2 is provided with check valve 7, and the end that described first pipeline stretches in described ammoniacal liquor case 2 is provided with nozzle 8.Two nozzles 8 have been shown in Fig. 2, ammonia in first pipeline enters in ammoniacal liquor case 2 by nozzle 8, ammoniacal liquor case 2 is dissolved in more fully for the ease of ammonia, first pipeline stretches into the bottom of described ammoniacal liquor case 2, described nozzle 8 is arranged on the bottom of described ammoniacal liquor case 2, upwards flows from the bottom of ammoniacal liquor case 2 to make ammonia.Check valve 7 is set at the first pipeline, is to make the ammonia supplied for ammonia device 1 can only be flowed in ammoniacal liquor case 2 by the first pipeline, and oppositely cannot flows into by the first pipeline from ammoniacal liquor case 2.
Liquid ammonia storage tank 1a described above supplies ammonia pressure for setting as required, such as, is 0.25MPa for ammonia pressure.Wherein the opening pressure of check valve 7 is less than for ammonia pressure.When system is 0.25MPa for ammonia pressure, the opening pressure of described check valve 7 should be less than 0.25MPa.
Wherein, the described ammonia pipeline 3 that supplies is connected for ammonia device 1 with described by the second pipeline, and described second pipeline is provided with filter screen 20 and Pressure gauge 21.Filter screen 20 can filter from the impurity the ammonia supplied for ammonia device 1, guarantees the pure of the ammoniacal liquor in ammoniacal liquor case 2.Pressure gauge 21 for measure in real time in the second pipeline for ammonia pressure, when time less than normal or bigger than normal for ammonia pressure, then by regulating the flow of ammonia to change for ammonia pressure for ammonia pressure valve 1d, make to remain in suitable scope for ammonia pressure.
In order to realize automatically configuring the liquid level that ammoniacal liquor controls in ammoniacal liquor case 2 automatically, described ammoniacal liquor case 2 is provided with the high level switch 9 and low liquid-level switch 10 that are electrically connected with described water supply open and close valve 6, when in described ammoniacal liquor case 2, liquid level is equal to or higher than described high level switch 9, described high level switch 9 is closed closes to control described water supply open and close valve 6; When in described ammoniacal liquor case 2, liquid level is equal to or less than low liquid-level switch 10, described low liquid-level switch 10 is closed to be opened to control described water supply open and close valve 6.
Particularly, when in ammoniacal liquor case 2, liquid level is equal to or less than low liquid-level switch 10, the low junction closure of liquid level, low liquid-level switch 1 does not reach the solution in ammoniacal liquor case 2, the signal that liquid level is reached minimum altitude by low liquid-level switch 1 sends controller to, controller controls water supply open and close valve 6 and opens, to supply demineralized water in ammoniacal liquor case 2.When in ammoniacal liquor case 2, liquid level is equal to or higher than described high level switch 9, liquid level height junction closure, high level switch 9 touches the solution in ammoniacal liquor case 2, the signal that liquid level is reached maximum height by high level switch 9 sends controller to, controller controls water supply open and close valve 6 and cuts out, to stop supplying demineralized water in ammoniacal liquor case 2.Present embodiment is by arranging high level switch 9 and low liquid-level switch 10, cut off the water when moisturizing when water level is low in ammoniacal liquor case 2, water level height, the liquid level controlled in ammoniacal liquor case 2 remains between high level switch 9 place liquid level and low liquid-level switch 10 place liquid level substantially.
More specifically, when the low junction closure of liquid level, the magnetic valve of the actuator source of the gas of water supply open and close valve 6 is charged, connects the actuator source of the gas of water supply open and close valve 6, to make water supply open and close valve 6 open, is introduced by power plant's demineralized water in ammoniacal liquor case 2; When liquid level height junction closure, the source of the gas magnetic valve dead electricity of water supply open and close valve 6, the actuator source of the gas of isolated water supply open and close valve 6, water supply open and close valve 6 is closed.
Present embodiment is by arranging above-mentioned ammonia watertank water-level automatic controll system, when the liquid level in ammoniacal liquor case 2 is lower than described low liquid-level switch 10 place height, described water supply open and close valve 6 is opened, be communicated with thermal power plant's demineralized water pipeline and ammoniacal liquor case 2, thus, demineralized water in thermal power plant's demineralized water pipeline can flow in ammoniacal liquor case 2, to increase the dosage of the demineralized water in ammoniacal liquor case 2; Otherwise, when the liquid level in ammoniacal liquor case 2 is higher than high level switch 9 place height, described water supply open and close valve 6 is closed, and blocks thermal power plant's demineralized water pipeline and ammoniacal liquor case 2, demineralized water in thermal power plant's demineralized water pipeline cannot flow in ammoniacal liquor case 2, to stop the dosage of the demineralized water increased in ammoniacal liquor case 2.
Wherein, described ammoniacal liquor case 2 is arranged the conductivity gauge 11 for detecting the ammonia concn in described ammoniacal liquor case 2, and described conductivity gauge 11 is electrically connected for ammonia open and close valve 5 with described;
When the reading of described conductivity gauge 11 is lower than the first setting value, the low junction closure of described conductivity gauge 11 is opened to make the described ammonia open and close valve 5 that supplies; When the reading of described conductivity gauge 11 is higher than the second setting value, the high junction closure of described conductivity gauge 11 is closed to make the described ammonia open and close valve 5 that supplies; Wherein, described first setting value is lower than described second setting value.
Conductivity gauge 11 is instruments of measurement of species conductive capability, the conductive capability that the ammoniacal liquor of variable concentrations is corresponding different, the ammoniacal liquor of different conductive capability detects the different conductance index of rear acquisition by conductivity gauge 11, thus, uses conductivity gauge 11 corresponding can know the concentration of ammoniacal liquor in ammoniacal liquor case 2.Particularly, conductance index is higher then proves that electric conductivity is stronger, and namely in ammoniacal liquor case 2, the concentration of ammoniacal liquor is higher.
When ammoniacal liquor liquid level in ammoniacal liquor case 2 reaches upper control limit, conductance index lower than the first setting value, the low junction closure of conductance, controller controls to open for ammonia open and close valve 5, to introduce in ammoniacal liquor case 2 by for the ammonia in ammonia device 1; When conductance instruction reaches the second setting value, conductance height junction closure, controller controls to cut out for ammonia open and close valve 5, to stop supplying ammonia in ammoniacal liquor case 2.
More specifically, when conductance instruction reaches the first setting value, the low junction closure of conductance, magnetic valve for the actuator source of the gas of ammonia open and close valve 5 is charged, connect the actuator source of the gas for ammonia open and close valve 5, to make to open for ammonia open and close valve 5, the ammonia produced for ammonia device 1 is introduced in ammoniacal liquor case 2; When conductance instruction reaches the second setting value, conductance height junction closure, for the magnetic valve dead electricity of the actuator source of the gas of ammonia open and close valve 5, closes the actuator source of the gas for ammonia open and close valve 5, will close for ammonia movable valve.
First setting value and the second setting value can set as required, and such as, the first setting value is 800us/cm, and the second setting value is 1200us/cm.
Wherein, described ammoniacal liquor case 2 arranges agitator 12.Start agitator 12, ammonia can be made to be rapidly dissolved in ammoniacal liquor case 2.
Due in whole thermal power plant chemical processing system, can open and close frequently for ammonia open and close valve 5, therefore this confession ammonia open and close valve 5 may break down, in order to when overhauling this for ammonia open and close valve 5, do not affect the normal use of thermal power plant's chemical processing system, described be provided with for ammonia pipeline 3 be positioned at the described both sides for ammonia open and close valve 5 pipeline section on be respectively equipped with for ammonia hand-operated valve 13, be describedly parallel with for ammonia shunt valve 14 for ammonia pipeline 3, be describedly provided with for ammonia bypass valve 15 for ammonia shunt valve 14.
Generally, be positioned at and be in normally open for two on the pipeline section of ammonia open and close valve 5 both sides for ammonia hand-operated valve 13, namely the state of conducting for ammonia pipeline 3 is in, and be in normally off for ammonia bypass valve 15, namely the state blocked for ammonia shunt valve 14 is in, therefore, the demineralized water in thermal power plant's demineralized water pipeline is all by flowing in ammoniacal liquor case 2 for ammonia shunt valve 14.When needs maintenance is for ammonia open and close valve 5, can by closing for ammonia hand-operated valve 13 for ammonia open and close valve 5 both sides, open for ammonia bypass valve 15 simultaneously, like this, the ammonia pipeline 3 that supplies for ammonia open and close valve 5 place is just in blocking state, demineralized water in thermal power plant's demineralized water pipeline can only by flowing in ammoniacal liquor case 2 for ammonia shunt valve 14, thus ensure, when breaking down for ammonia open and close valve 5, still can complete the configuration of ammoniacal liquor.
Due in whole thermal power plant chemical processing system, water supply open and close valve 6 can open and close frequently, therefore, in order to when overhauling this water supply open and close valve 6, do not affect the normal use of thermal power plant's chemical processing system, the pipeline section described supply channel 4 being positioned at the both sides of described water supply open and close valve 6 is respectively equipped with water supply hand-operated valve 16, and described supply channel 4 is parallel with water supply shunt valve 17, and described water supply shunt valve 17 is provided with water supply bypass valve 18.
Generally, two the water supply hand-operated valves 16 be positioned on the pipeline section of water supply open and close valve 6 both sides are in normally open, namely the state of conducting supply channel 4 is in, and the bypass valve 18 that supplies water is in normally off, namely the state blocking water supply shunt valve 17 is in, therefore, the demineralized water in thermal power plant's demineralized water pipeline is all flowed in ammoniacal liquor case 2 by supply channel 4.When needs maintenance water supply open and close valve 6, the water supply hand-operated valve 16 of water supply open and close valve 6 both sides can cut out, open water supply bypass valve 18, the demineralized water in such thermal power plant demineralized water pipeline is just flowed in ammoniacal liquor case 2 by water supply shunt valve 17 simultaneously.Like this, the supply channel 4 at water supply open and close valve 6 place is just in blocking state, demineralized water in thermal power plant's demineralized water pipeline can only be flowed in ammoniacal liquor case 2 by water supply bypass valve 18, thus ensures, when water supply open and close valve 6 breaks down, still can complete the configuration of ammoniacal liquor.
Wherein, the outlet of described ammoniacal liquor case 2 is connected with measuring pump 19.As required the ammoniacal liquor configured in ammoniacal liquor case 2 is delivered in Water Treatment the occasion needing ammoniacal liquor by measuring pump 19.Usually, from the pH value for regulating thermal power plant's demineralized water that ammoniacal liquor case 2 transfers out.
Below the preferred embodiment of the present invention is described in detail by reference to the accompanying drawings; but; the present invention is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each the concrete technical characteristic described in above-mentioned detailed description of the invention, in reconcilable situation, can be combined by any suitable mode.In order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible combination.
In addition, also can be combined between various different embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (10)
1. thermal power plant's chemical processing system, comprise ammonia-method denitration system and chemical water treatment system, it is characterized in that, described ammonia-method denitration system comprises for ammonia device (1), described chemical water treatment system comprises ammoniacal liquor inking device (B), described ammoniacal liquor inking device (B) comprises ammoniacal liquor case (2), described ammoniacal liquor case (2) is by being communicated with for ammonia device (1) with described for ammonia pipeline (3), and described ammoniacal liquor case (2) is by supply channel (4) and thermal power plant's demineralized water pipeline connection; Arrange respectively for ammonia open and close valve (5) and water supply open and close valve (6) on ammonia pipeline (3) and described supply channel (4).
2. thermal power plant according to claim 1 chemical processing system, it is characterized in that, the described ammonia device (1) that supplies comprises the liquid ammonia storage tank (1a), evaporimeter (1b) and the ammonia surge tank (1c) that connect successively, and described ammonia surge tank (1c) is communicated with described ammoniacal liquor case (2) for ammonia pipeline (3) by described.
3. thermal power plant according to claim 1 chemical processing system, it is characterized in that, described confession ammonia pipeline (3) and described ammoniacal liquor case (2) are by the first pipeline connection, described first pipeline extend in described ammoniacal liquor case (2), described first pipeline is positioned at described ammoniacal liquor case (2) part outward and is provided with check valve (7), and the end that described first pipeline stretches in described ammoniacal liquor case (2) is provided with nozzle (8).
4. thermal power plant according to claim 1 chemical processing system, it is characterized in that, described ammonia pipeline (3) that supplies is connected for ammonia device (1) with described by the second pipeline, and described second pipeline is provided with filter screen (20) and Pressure gauge (21).
5. thermal power plant according to claim 1 chemical processing system, it is characterized in that, described ammoniacal liquor case (2) is provided with the high level switch (9) and low liquid-level switch (10) that are electrically connected with described water supply open and close valve (6), when the interior liquid level of described ammoniacal liquor case (2) is equal to or higher than described high level switch (9), described high level switch (9) is closed to control the closedown of described water supply open and close valve (6); When in described ammoniacal liquor case (2), liquid level is equal to or less than low liquid-level switch (10), described low liquid-level switch (10) is closed opens to control described water supply open and close valve (6).
6. thermal power plant according to claim 1 chemical processing system, it is characterized in that, the upper conductivity gauge (11) arranged for detecting the ammonia concn in described ammoniacal liquor case (2) of described ammoniacal liquor case (2), and described conductivity gauge (11) is electrically connected for ammonia open and close valve (5) with described;
When the reading of described conductivity gauge (11) is lower than the first setting value, the low junction closure of described conductivity gauge (11) is described for ammonia open and close valve (5) unlatching to make; When the reading of described conductivity gauge (11) is higher than the second setting value, the high junction closure of described conductivity gauge (11) is described for ammonia open and close valve (5) closedown to make; Wherein, described first setting value is lower than described second setting value.
7. thermal power plant according to claim 1 chemical processing system, is characterized in that, described ammoniacal liquor case (2) arranges agitator (12).
8. thermal power plant according to claim 1 chemical processing system, it is characterized in that, the described pipeline section being provided with the both sides being positioned at described confession ammonia open and close valve (5) for ammonia pipeline (3) is respectively equipped with for ammonia hand-operated valve (13), described being parallel with for ammonia pipeline (3) supplies ammonia shunt valve (14), and described being provided with for ammonia shunt valve (14) supplies ammonia bypass valve (15).
9. thermal power plant according to claim 1 chemical processing system, it is characterized in that, the pipeline section described supply channel (4) being positioned at the both sides of described water supply open and close valve (6) is respectively equipped with water supply hand-operated valve (16), described supply channel (4) is parallel with water supply shunt valve (17), and described water supply shunt valve (17) is provided with water supply bypass valve (18).
10. the thermal power plant's chemical processing system according to any one of claim 1-9, is characterized in that, the outlet of described ammoniacal liquor case (2) is connected with measuring pump (19).
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| CN106966409A (en) * | 2017-04-08 | 2017-07-21 | 华润电力（贺州）有限公司 | A kind of ammonia system processed |
| CN107803163A (en) * | 2017-11-22 | 2018-03-16 | 国网新疆电力有限公司电力科学研究院 | The automatic servicing unit of the volatile solution of excitant and application method are prepared by thermal power plant |
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| CN103588163A (en) * | 2013-11-22 | 2014-02-19 | 云南云铝涌鑫铝业有限公司 | Safe and efficient automatic control process for ammonium hydroxide distribution |
| CN204051416U (en) * | 2014-09-18 | 2014-12-31 | 中国神华能源股份有限公司 | Thermal power plant's chemical processing system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106966409A (en) * | 2017-04-08 | 2017-07-21 | 华润电力（贺州）有限公司 | A kind of ammonia system processed |
| CN107803163A (en) * | 2017-11-22 | 2018-03-16 | 国网新疆电力有限公司电力科学研究院 | The automatic servicing unit of the volatile solution of excitant and application method are prepared by thermal power plant |
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