CN209188465U - A kind of compact-sized desulfuring and denitrifying apparatus - Google Patents
A kind of compact-sized desulfuring and denitrifying apparatus Download PDFInfo
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- CN209188465U CN209188465U CN201821426635.8U CN201821426635U CN209188465U CN 209188465 U CN209188465 U CN 209188465U CN 201821426635 U CN201821426635 U CN 201821426635U CN 209188465 U CN209188465 U CN 209188465U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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Abstract
The utility model relates to industrial waste gas processing technology fields, and disclose a kind of compact-sized desulfuring and denitrifying apparatus, including mounting plate, the bottom of the mounting plate is fixedly connected with bracket, tower body is fixedly connected at the top of the mounting plate, it is fixedly connected with collecting tank at the inner bottom wall center of the tower body, the inside of the tower body and is located above collecting tank and is fixedly connected with spraying net, the bottom of the spraying net is fixedly connected with evenly distributed spray head.The compact-sized desulfuring and denitrifying apparatus, it can be supplied water by pump working for spraying net, water can be sprayed rapidly to atomization by the spray head being fixedly connected with spraying net, increase the adsorption capacity to floating material in flue gas, ammonia can be delivered to middle part in tower body by the ammonia inlet pipe being fixedly connected with interface and generate chemical reaction with exhaust gas, electron beam emitter generates high-power electron beam, the N after high electron beam irradiation, in exhaust gas at this time2、O2Radioreaction occurs with vapor etc..
Description
Technical field
The utility model relates to industrial waste gas processing technology field, specially a kind of compact-sized desulfuring and denitrifying apparatus.
Background technique
Desulfurization sloughs the sulphur content in fuel before referring to burning and the desulfuration process before flue gas emissions, denitration refers to combustion
The process for removing denitrification in flue gas is burnt, contains a large amount of sulfide and itrated compound in industrial waste gas, unprocessed exhaust gas
Excess emissions have become the major reason of environmental pollution, how to reduce the discharge of harmful substance in exhaust gas, have become various countries
Urgent problem to be solved.
With the high speed development of China's process of industrialization in recent years, also environment is caused sternly while bringing high benefit
The pollution of weight, so country is also more stringent for the discharge standard of industrial waste gas, it can be significant by devices such as desulfurizing towers
Reduce the content of harmful substance in exhaust gas, but the problem that existing device is not compact in the prevalence of structure distribution, thus I
Propose a kind of compact-sized desulfuring and denitrifying apparatus to solve the above problems.
Utility model content
(1) the technical issues of solving
In view of the deficiencies of the prior art, the utility model provides a kind of compact-sized desulfuring and denitrifying apparatus, has knot
The advantages that structure is compact solves the problems, such as that existing device is not compact in the prevalence of structure distribution.
(2) technical solution
To realize the compact purpose of above structure, the utility model is provided the following technical solutions: a kind of compact-sized desulfurization
Denitrification apparatus, including mounting plate, the bottom of the mounting plate are fixedly connected with bracket, are fixedly connected at the top of the mounting plate
Tower body is fixedly connected with collecting tank, the inside of the tower body and the top for being located at collecting tank at the inner bottom wall center of the tower body
It is fixedly connected with spraying net, the bottom of the spraying net is fixedly connected with evenly distributed spray head, in the right inner wall of tower body
Portion and it is located above spraying net and is fixedly connected with several electron beam emitters, the inside of the tower body and is located at electron beam and emits
It is fixedly connected with adsorption layer above device, the inside of the tower body and is located above adsorption layer and is fixedly connected with demisting layer, institute
It states and is fixedly connected with tower lid at the top of tower body, the escape pipe through tower lid, institute are fixedly connected at the center of the tower tops
It states the top of tower lid and is located on the left of escape pipe and be fixedly connected with air-introduced machine, the air outlet of the air-introduced machine runs through and enters
Tracheae, the top of the mounting plate and be located at tower body on the right side of be fixedly connected with water pump, the outlet pipe and spraying net of the water pump
Water inlet is connected, and staircase is fixedly connected on the right side of the tower body, is fixedly connected with guardrail on the outside of the tower body top, described
Guardrail is fixedly connected with the top of staircase, and the lower part on the left of the tower body is fixedly connected with air inlet pipe, on the left of the tower body in
Portion is fixedly connected with interface, and the interface runs through the left side wall of tower body, and the inside of the interface is fixedly connected with ammonia inlet pipe, institute
It states the left side of tower body and is located above interface and be fixedly connected with expects pipe, be connected with valve on the left of the ammonia inlet pipe,
The internal activity of the demisting layer is connected with equally distributed waveform demisting plate.
Preferably, the shape of the tower body is cylindrical, and the tower body, spraying net, adsorption layer, demisting layer and installation
The central axes of plate are on the same line.
Preferably, the shape of the adsorption layer and demisting layer is that round and outside is bonded with the inner wall of tower body.
Preferably, the internal diameter of the tower body is not less than two meters and tower wall thickness is not less than five centimetres.
Preferably, the shape of the interface is that round and internal diameter is identical as the outer diameter of ammonia inlet pipe.
Preferably, the air inlet pipe, the internal diameter of ammonia inlet pipe and expects pipe and outer diameter are all the same.
Preferably, the distance between two neighboring described waveform demisting plate is respectively less than two centimetres.
(3) beneficial effect
Compared with prior art, the utility model provides a kind of compact-sized desulfuring and denitrifying apparatus, and having following has
Beneficial effect:
1, the compact-sized desulfuring and denitrifying apparatus, is introduced exhaust gas into tower body, pump working can at this time by air inlet pipe
For spraying net water supply, water can be sprayed rapidly to atomization by the spray head being fixedly connected with spraying net, increased to floating material in flue gas
Adsorption capacity, the preliminary treatment to exhaust gas can be realized by above structure, the exhaust gas of preliminary treatment rises to middle part in tower body,
Ammonia can be delivered to by the ammonia inlet pipe being fixedly connected with interface by middle part in tower body at this time and generate chemical reaction with exhaust gas,
Electron beam emitter generates high-power electron beam, the N after high electron beam irradiation, in exhaust gas at this time2、O2It is sent out with vapor etc.
Raw radioreaction, generates atom, the molecule isoreactivity substance of a large amount of ion, free radical, atom, electronics and various excitation state,
They are by the SO in exhaust gas2And NOXIt is oxidized to SO3And NO2, the sulfur and nitrogen oxides of these high prices react with vapor
Misty sulfuric acid and nitric acid are generated, these acid are reacted with the ammonia being previously implanted into inside tower body again, generate the ammonium sulfate of suspension
And ammonium nitrate, the thus achievable desulphurization denitration process to industrial waste gas.
2, the compact-sized desulfuring and denitrifying apparatus is big in the exhaust gas that adsorbable desulphurization denitration is completed by adsorption layer
Particle harmful substance, is further reduced the content of harmful substance in exhaust gas, and exhaust gas is adsorbed by desulphurization denitration and by adsorption layer
Afterwards, demisting layer can be continued to rise to, at this time the waveform demisting plate inside demisting layer, by its waveform configuration can by desulphurization denitration it
The suspension ammonium sulfate and ammonium nitrate generated in exhaust gas afterwards collects, and at this time by air-introduced machine and exhaust pipe, can facilitate purification
Exhaust gas afterwards goes out inside tower body, the high-power electron beam generated by electron beam emitter and the ammonia by the conveying of ammonia inlet pipe
Gas can carry out desulphurization denitration process, compared with the device for separately handling desulfurization and denitration in the past, the dress to industrial waste gas simultaneously
Set by by desulphurization denitration while carrying out, while shortening working hours, improving working efficiency, reduce extra structure and
Process, to realize the compact purpose of the apparatus structure.
Detailed description of the invention
Fig. 1 is the utility model section structural schematic diagram；
Fig. 2 is the utility model demisting layer top view.
In figure: 1 mounting plate, 2 brackets, 3 tower bodies, 4 collecting tanks, 5 spraying nets, 6 spray heads, 7 electron beam emitters, 8 adsorption layers,
9 demisting layers, 10 tower lids, 11 exhaust pipes, 12 air-introduced machines, 13 water pumps, 14 staircases, 15 guardrails, 16 air inlet pipe, 17 interfaces, 18 ammonias
Inlet pipe, 19 expects pipes, 20 valves, 21 waveform demisting plates.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
A kind of compact-sized desulfuring and denitrifying apparatus referring to FIG. 1-2, including mounting plate 1, mounting plate 1 can be thereon
Structure provides mounting platform and keeps its structural stability, and the bottom of mounting plate 1 is fixedly connected with bracket 2, the top of mounting plate 1
It is fixedly connected with tower body 3, the internal diameter of tower body 3 is not less than two meters and tower wall thickness is not less than five centimetres, and tower body 3 can be desulphurization denitration
Process provides space and is isolated from the outside world the process to reduce pollution, is fixedly connected with collection at the inner bottom wall center of tower body 3
Liquid bath 4, collecting tank 4 collect the liquid that spray head 6 sprays during spray, avoid the occurrence of contaminated wastewater, the inside of tower body 3
And the top for being located at collecting tank 4 is fixedly connected with spraying net 5, spraying net 5 can provide mounting surface and it is kept to work for spray head 6
Stabilization in the process, the bottom of spraying net 5 are fixedly connected with evenly distributed spray head 6, and 6 pressure of spray head is 0.2-0.45mpa, stream
Amount is 3-4.4m3/ h, type are bidirectional rotation spray head, and spray head 6 can be such that liquid is atomized rapidly, are increased to harmful substance in exhaust gas
Suction-operated, the middle part of the right inner wall of tower body 3 and the top for being located at spraying net 5 are fixedly connected with several electron beam emitters 7, model
For 150MW, light source power 150mw, voltage 12V, electron beam emitter 7 can produce high-power electron beam to make the object in exhaust gas
Matter chemically reacts, the inside of tower body 3 and be located at electron beam emitter 7 top be fixedly connected with adsorption layer 8, adsorption layer 8
Shape with demisting layer 9 is that round and outside is bonded with the inner wall of tower body 3, and adsorption layer 8 can be used to adsorb big in exhaust gas
Particle harmful substance, is further reduced pollutant, the inside of the tower body 3 and top for being located at adsorption layer 8 is fixedly connected with demisting layer
9, the shape of tower body 3 is cylinder, and tower body 3, spraying net 5, adsorption layer 8, demisting layer 9 and mounting plate 1 central axes same
On one straight line, waveform demisting plate 21 inside demisting layer 9 can will be generated by its waveform configuration in exhaust gas after desulphurization denitration
Suspension ammonium sulfate and ammonium nitrate collect, and the top of tower body 3 is fixedly connected with tower lid 10, and tower lid 10 can keep tower body 3
Leakproofness, is fixedly connected with the escape pipe 11 through tower lid 10 at the center at the top of tower lid 10, the top of tower lid 10 and is located at
The left side of tracheae 11 is fixedly connected with air-introduced machine 12, concrete model 4-72A, voltage 380V, shaft power 3KW, and revolving speed is
2800r/min, material are cast iron, air-introduced machine 12 and exhaust pipe 11, purified exhaust gas can be facilitated to go out inside tower body 3, air inducing
The air outlet of machine 12 runs through and enters escape pipe 11, the top of the mounting plate 1 and right side for being located at tower body 3 is fixedly connected with water pump
13, concrete model CDLF, driving method be it is electronic, impeller suction be single-suction, voltage 380V, power 0.37-
45Kw, the work of water pump 13 can supply water for spraying net 5, and the outlet pipe of water pump 13 is connected with 5 water inlet of spraying net, the right side of tower body 3
It is fixedly connected with staircase 14, staircase 14 can facilitate staff or more, and guardrail 15 is fixedly connected on the outside of 3 top of tower body, protect
Column 15 can increase the safety of personnel at work, and guardrail 15 is fixedly connected with the top of staircase 14, the lower part in 3 left side of tower body
It is fixedly connected with air inlet pipe 16, air inlet pipe 16 can enter tower body 3 for exhaust gas and provide channel, and the middle part in 3 left side of tower body is fixedly connected
There is interface 17, the shape of interface 17 is that round and internal diameter is identical as the outer diameter of ammonia inlet pipe 18, and interface 17 runs through the left side of tower body 3
Wall, the inside of interface 17 are fixedly connected with ammonia inlet pipe 18, and ammonia inlet pipe 18 can convey ammonia into inside tower body 3, tower body 3
The left side and top for being located at interface 17 is fixedly connected with expects pipe 19, the internal diameter of air inlet pipe 16, ammonia inlet pipe 18 and expects pipe 19 and outer
Diameter size is all the same, and the left side of ammonia inlet pipe 18 is connected with valve 20, and what valve 20 can control ammonia inlet pipe 18 passes through feelings
Condition, the internal activity of demisting layer 9 are connected with equally distributed waveform demisting plate 21, model SP/XP, and nominal diameter is
1500mm, material are glass reinforced plastic, respectively less than two centimetres of the distance between two neighboring waveform demisting plate 21, waveform demisting plate 21,
The suspension ammonium sulfate and ammonium nitrate that generate in exhaust gas after desulphurization denitration can be collected by its waveform configuration.
When in use, it being introduced exhaust gas into tower body 3 by air inlet pipe 16, the work of water pump 13 at this time can supply water for spraying net 5,
Water can be sprayed rapidly to atomization by the spray head 6 being fixedly connected with spraying net 5, increase the adsorption capacity to floating material in flue gas,
Can realize the preliminary treatment to exhaust gas by above structure, the exhaust gas of preliminary treatment rises to middle part in tower body 3, at this time by with
Ammonia can be delivered to middle part in tower body 3 and generate chemical reaction with exhaust gas by the ammonia inlet pipe 18 that interface 17 is fixedly connected, at this time
Electron beam emitter 7 generates high-power electron beam, the N after high electron beam irradiation, in exhaust gas2、O2Spoke occurs with vapor etc.
Reaction is penetrated, atom, the molecule isoreactivity substance of a large amount of ion, free radical, atom, electronics and various excitation state are generated, they
By the SO in exhaust gas2And NOXIt is oxidized to SO3And NO2, the sulfur and nitrogen oxides of these high prices react generation with vapor
Misty sulfuric acid and nitric acid, these acid are reacted with the ammonia being previously implanted into inside tower body 3 again, generate the ammonium sulfate and nitre of suspension
Sour ammonium, by adsorption layer 8, the bulky grain harmful substance in exhaust gas that adsorbable desulphurization denitration is completed is further reduced in exhaust gas
The content of harmful substance, exhaust gas can continue to rise to demisting layer 9, remove at this time by desulphurization denitration and after the absorption of adsorption layer 8
Waveform demisting plate 21 inside mist layer 9, the suspension sulfuric acid that can will be generated in exhaust gas after desulphurization denitration by its waveform configuration
Ammonium and ammonium nitrate collect, and at this time by air-introduced machine 12 and exhaust pipe 11, can facilitate purified exhaust gas inside tower body 3
Out, the high-power electron beam generated by electron beam emitter 7 and the ammonia conveyed by ammonia inlet pipe 18, can be simultaneously to Industry Waste
Gas carries out desulphurization denitration process, and compared with the device for separately handling desulfurization and denitration in the past, the device is by by desulphurization denitration
It carries out simultaneously, while shortening working hours, improving working efficiency, reduces extra structure and process, to realize
The compact purpose of the apparatus structure.
In conclusion the compact-sized desulfuring and denitrifying apparatus, is introduced exhaust gas into tower body 3, at this time by air inlet pipe 16
The work of water pump 13 can supply water for spraying net 5, and water can be sprayed rapidly to atomization by the spray head 6 being fixedly connected with spraying net 5, increase
Add the adsorption capacity to floating material in flue gas, the preliminary treatment to exhaust gas, the exhaust gas of preliminary treatment can be realized by above structure
Middle part in tower body 3 is risen to, at this time ammonia can be delivered in tower body 3 by the ammonia inlet pipe 18 being fixedly connected with interface 17
Portion simultaneously generates chemical reaction with exhaust gas, and electron beam emitter 7 generates high-power electron beam at this time, after high electron beam irradiation,
N in exhaust gas2、O2Radioreaction occurs with vapor etc., generates a large amount of ion, free radical, atom, electronics and various excitations
Atom, the molecule isoreactivity substance of state, they are by the SO in exhaust gas2And NOXIt is oxidized to SO3And NO2, the sulphur oxidation of these high prices
Object and nitrogen oxides are reacted with vapor generates misty sulfuric acid and nitric acid, these acid again with the ammonia that is previously implanted into inside tower body 3
Solid/liquid/gas reactions generate the ammonium sulfate and ammonium nitrate of suspension, thus the achievable desulphurization denitration process to industrial waste gas.
The compact-sized desulfuring and denitrifying apparatus, by adsorption layer 8, big in exhaust gas that adsorbable desulphurization denitration is completed
Grain harmful substance, is further reduced the content of harmful substance in exhaust gas, and exhaust gas is adsorbed by desulphurization denitration and by adsorption layer 8
Afterwards, demisting layer 9 can be continued to rise to, the waveform demisting plate 21 inside demisting layer 9, can be taken off desulfurization by its waveform configuration at this time
The suspension ammonium sulfate and ammonium nitrate generated in exhaust gas after nitre collects, can at this time by air-introduced machine 12 and exhaust pipe 11
Purified exhaust gas is facilitated to go out inside tower body 3, the high-power electron beam and process ammonia inlet pipe generated by electron beam emitter 7
The ammonia of 18 conveyings can carry out desulphurization denitration process to industrial waste gas simultaneously, with the dress for separately handling desulfurization and denitration in the past
It sets and compares, which while shortening working hours, improving working efficiency, is reduced by carrying out desulphurization denitration simultaneously
Extra structure and process, to realize the compact purpose of the apparatus structure.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (7)
1. a kind of compact-sized desulfuring and denitrifying apparatus, including mounting plate (1), it is characterised in that: the bottom of the mounting plate (1)
It is fixedly connected with bracket (2), is fixedly connected with tower body (3) at the top of the mounting plate (1), in the inner bottom wall of the tower body (3)
Be fixedly connected at the heart collecting tank (4), the inside of the tower body (3) and be located at collecting tank (4) above be fixedly connected with spray
The bottom of net (5), the spraying net (5) is fixedly connected with evenly distributed spray head (6), the middle part of the right inner wall of the tower body (3)
And be located at spraying net (5) above be fixedly connected with several electron beam emitters (7), the inside of the tower body (3) and be located at electricity
It is fixedly connected with above beamlet transmitter (7) adsorption layer (8), the inside of the tower body (3) and the top for being located at adsorption layer (8)
Be fixedly connected with demisting layer (9), be fixedly connected with tower lid (10) at the top of the tower body (3), at the top of the tower lid (10) in
The escape pipe (11) through tower lid (10), the top of the tower lid (10) and the left side for being located at escape pipe (11) are fixedly connected at the heart
Side is fixedly connected with air-introduced machine (12), and the air outlet of the air-introduced machine (12) runs through and enters escape pipe (11), the mounting plate
(1) top and being located on the right side of tower body (3) is fixedly connected with water pump (13), the outlet pipe and spraying net of the water pump (13)
(5) water inlet is connected, and is fixedly connected with staircase (14) on the right side of the tower body (3), and the outside on tower body (3) top is fixed to be connected
It is connected to guardrail (15), the guardrail (15) is fixedly connected with the top of staircase (14), and the lower part on the left of the tower body (3) is fixed to be connected
It is connected to air inlet pipe (16), the middle part on the left of the tower body (3) is fixedly connected with interface (17), and the interface (17) runs through tower body
(3) inside of left side wall, the interface (17) is fixedly connected with ammonia inlet pipe (18), the left side of the tower body (3) and is located at
It is fixedly connected with above interface (17) expects pipe (19), is connected with valve (20), institute on the left of the ammonia inlet pipe (18)
The internal activity for stating demisting layer (9) is connected with equally distributed waveform demisting plate (21).
2. the compact-sized desulfuring and denitrifying apparatus of one kind according to claim 1, it is characterised in that: the tower body (3)
Shape is cylindrical, and the central axes of the tower body (3), spraying net (5), adsorption layer (8), demisting layer (9) and mounting plate (1)
On the same line.
3. the compact-sized desulfuring and denitrifying apparatus of one kind according to claim 1, it is characterised in that: the adsorption layer (8)
Shape with demisting layer (9) is that round and outside is bonded with the inner wall of tower body (3).
4. the compact-sized desulfuring and denitrifying apparatus of one kind according to claim 1, it is characterised in that: the tower body (3)
Internal diameter is not less than two meters and tower wall thickness is not less than five centimetres.
5. the compact-sized desulfuring and denitrifying apparatus of one kind according to claim 1, it is characterised in that: the interface (17)
Shape is that round and internal diameter is identical as the outer diameter of ammonia inlet pipe (18).
6. the compact-sized desulfuring and denitrifying apparatus of one kind according to claim 1, it is characterised in that: the air inlet pipe
(16), the internal diameter and outer diameter of ammonia inlet pipe (18) and expects pipe (19) are all the same.
7. the compact-sized desulfuring and denitrifying apparatus of one kind according to claim 1, it is characterised in that: the two neighboring wave
The distance between shape demisting plate (21) is respectively less than two centimetres.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821426635.8U CN209188465U (en) | 2018-08-31 | 2018-08-31 | A kind of compact-sized desulfuring and denitrifying apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821426635.8U CN209188465U (en) | 2018-08-31 | 2018-08-31 | A kind of compact-sized desulfuring and denitrifying apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209188465U true CN209188465U (en) | 2019-08-02 |
Family
ID=67405575
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821426635.8U Expired - Fee Related CN209188465U (en) | 2018-08-31 | 2018-08-31 | A kind of compact-sized desulfuring and denitrifying apparatus |
Country Status (1)
| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114345100A (en) * | 2022-01-10 | 2022-04-15 | 江西联达金砂湾冶金有限公司 | Flue gas desulfurization and denitrification device with harmful substance detection function |
-
2018
- 2018-08-31 CN CN201821426635.8U patent/CN209188465U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114345100A (en) * | 2022-01-10 | 2022-04-15 | 江西联达金砂湾冶金有限公司 | Flue gas desulfurization and denitrification device with harmful substance detection function |
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Granted publication date: 20190802 Termination date: 20200831 |