CN210495298U

CN210495298U - Concentrated crystallization device of SOx/NOx control system

Info

Publication number: CN210495298U
Application number: CN201920658635.9U
Authority: CN
Inventors: 张波
Original assignee: Shandong Mingsheng Chemical Engineering Co ltd
Current assignee: Shandong Mingsheng Environmental Protection Technology Co.,Ltd.
Priority date: 2019-05-09
Filing date: 2019-05-09
Publication date: 2020-05-12
Anticipated expiration: 2029-05-09

Abstract

The utility model discloses a concentrated crystallization device of a desulfurization and denitrification system, which belongs to the technical field of desulfurization and denitrification, and comprises a cylindrical barrel body, wherein the inner cavity of the barrel body is divided by a partition plate to form a second spray chamber above and a first spray chamber below, a first liquid accumulation groove is arranged at the bottom of the first inner cavity of the spray chamber, a smoke conveying pipe communicated with the second spray chamber is inserted into the outer wall of the first left side of the spray chamber, a water outlet pipe of the outer wall of the left side of a liquid storage tank is connected with a water inlet of a water pump, a liquid conveying pipe is arranged at the water outlet of the water pump, a defogging plate is arranged in the inner cavity of the second spray chamber, an ultraviolet germicidal lamp is arranged at the top of the inner cavity of the second spray chamber, and a smoke outlet is arranged at the top of the barrel body, the concentrated crystallization device generates (NH4)2SO4 and NH4NO3 by carrying out chemical reaction on SO2 and NOX in smoke, and carries out back-washing crystallization, prevent the bottom of the liquid accumulation tank from scabbing and avoid the occurrence of blockage.

Description

Concentrated crystallization device of SOx/NOx control system

Technical Field

The utility model relates to a SOx/NOx control technical field specifically is a SOx/NOx control system's concentrated crystallization device.

Background

With the increasing demand of economic development for energy, the usage amount of fire coal is also greatly increased. However, a large amount of flue gas can be released in the combustion process of coal, the temperature of the flue gas is 130-150 ℃, and if the flue gas containing sulfur dioxide and nitrogen oxide can not be effectively treated, the serious problem of environmental pollution can be brought; in addition, nitrogen is a necessary fertilizer for crop growth, and how to convert sulfur dioxide and nitrogen oxides in flue gas into a fertilizer required by crops is a problem which needs to be solved urgently at present, so that a concentration and crystallization device of a desulfurization and denitrification system is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a SOx/NOx control system's concentrated crystallization device to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a concentration crystallization device of a desulfurization and denitrification system comprises a cylindrical barrel, wherein an inner cavity of the barrel is divided by a partition plate to form an upper spray chamber II and a lower spray chamber I, a smoke inlet pipe and a fan are arranged on the outer wall of the left side of the spray chamber I, a spray disc I is arranged in the inner cavity of the spray chamber I, a liquid accumulation tank I is arranged at the bottom of the inner cavity of the spray chamber I, a liquid outlet pipe I extending to the outer side of the barrel is inserted into the outer wall of the left side of the liquid accumulation tank I, a smoke conveying pipe communicated with the spray chamber II is inserted into the outer wall of the left side of the spray chamber I, a liquid accumulation tank II is arranged at the bottom of the inner cavity of the spray chamber II, resistance heating wires are respectively arranged on the liquid accumulation tank I and the liquid accumulation tank II, a liquid storage tank is arranged at the top of the outer wall of the left side of the spray chamber II, a water outlet pipe of a water pump I is arranged on the outer wall of the left side of the liquid storage tank, the right end of the spray tray is provided with a circulating pipe, the other end of the circulating pipe extends to the outer side of the cylinder and is connected with a water inlet of the water pump, a flushing pipe communicated with the right end of the effusion groove is installed at a water outlet of the water pump, a defogging plate is installed in an inner cavity of the spray chamber, an ultraviolet germicidal lamp is installed at the top of the inner cavity of the spray chamber, and a smoke outlet is formed in the top of the cylinder.

Preferably, the spray tray II comprises a circular pipe of a hollow structure, the outer wall of the left side of the circular pipe is provided with a liquid inlet, the outer walls of the front side and the rear side of the circular pipe are provided with mounting blocks connected with the inner wall of the cylinder, the spray pipe is mounted on the inner wall of the circular pipe, the inner end of the spray pipe is communicated with the liquid accumulating pipe, and the outer wall of the right side of the liquid accumulating pipe is.

Preferably, the number of the spray pipes is six, the six spray pipes are arranged according to an annular array, and spray holes are uniformly formed in the bottom of each spray pipe along the length direction.

Preferably, the bottoms of the first effusion groove and the second effusion groove are both obliquely arranged, and the inclination angle is thirty degrees.

Preferably, the defogging board is the type defogging board is rolled over to the two-way passageway, and both ends all are provided with the card strip about the defogging board, two inner walls of spray room seted up with card strip assorted draw-in groove.

Preferably, the inner cavity of the smoke inlet pipe is spliced with a filter plate along the vertical direction, and a sealing gasket is arranged at the joint of the filter plate and the smoke inlet pipe.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses utilize spray dish two and spray dish one with SO2 and NOX in (NH4)2S solution blowout and the flue gas take place chemical reaction, the (NH4)2SO4 and NH4NO3 that the reaction generates are collected in hydrops groove one and hydrops groove two, heat (NH4)2SO4 and NH4NO3 solution that two hydrops inslots generated through resistance heating wire, make its concentrated crystallization, hydrops groove one and two bottom equal slopes of hydrops groove set up, make things convenient for the liquid flow, start-up water pump two, with solution in the hydrops groove two or the solution that sprays in the dish two flow into hydrops groove one under water pump two' S effect, realize carrying out the back flush action to hydrops groove one bottom, prevent hydrops groove one bottom scabbing, avoid the jam condition to take place, solution after the last concentration is discharged through the drain pipe, a fertilizer for as crops, realize the environmental protection effect.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of the second spray tray of the present invention.

In the figure: 1. a barrel; 2. a partition plate; 3. a second spray chamber; 4. a first spray chamber; 5. a smoke inlet pipe; 6. a fan; 7. spraying a first plate; 8. a liquid accumulating tank I; 9. a first liquid outlet pipe; 10. a smoke conveying pipe; 11. a second liquid accumulation tank; 12. Resistance heating wires; 13. a liquid storage tank; 14. a first water pump; 15. a transfusion tube; 16. a second spraying plate; 161. a ring pipe; 162. a liquid inlet; 163. mounting blocks; 164. a shower pipe; 165. a liquid accumulating pipe; 166. a second liquid outlet pipe; 17. a circulation pipe; 18. a second water pump; 19. a defogging plate; 20. an ultraviolet germicidal lamp; 21. a smoke outlet.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: a concentration crystallization device of a desulfurization and denitrification system comprises a cylindrical barrel 1, an inner cavity of the barrel 1 is divided by a partition plate 2 to form an upper spray chamber II 3 and a lower spray chamber I4, the outer wall of the left side of the spray chamber I4 is provided with a smoke inlet pipe 5 and a fan 6, the flue gas generated by coal combustion is introduced into the cylinder 1 through the smoke inlet pipe 5, the air outlet of the fan 6 is communicated with the cylinder 1 through a pipeline, oxygen in the outside air is conveniently blown into the spray chamber I4, the flue gas has certain temperature, in addition, the oxidation-reduction reaction in the spray chamber I4 is effectively improved under the action of the oxygen, the spray disc I7 is arranged in the inner cavity of the spray chamber I4, and (NH4)2S solution sprayed out of the spray disc I7 not only can cool the high-temperature flue gas, meanwhile, the (NH4)2S solution also chemically reacts with SO2 and NOX in the flue gas, and the reaction is as follows:

NO2+(NH4)2S＝(NH4)2SO4+N2

SO2+H2O＝H2SO3

3NO2+H2O＝2HNO3+NO

2NO+O2＝2NO2

H2SO3+(NH4)2S＝(NH4)2SO3+H2S

2NO+2(NH4)2SO3＝2(NH4)2SO4+N2

2HNO3+(NH4)2S＝2NH4NO3+H2S

H2S+(NH4)2S＝2NH4HS

2H2S+SO2＝3S+2H2O

2H2S+NO2＝2S+N2+2H2O

S+(NH4)2SO3＝(NH4)2S2O3

(NH4)2S2O3+2NO2+NH4OH＝4(NH4)2SO4+N2

(NH4)2SO3+0.5O2＝(NH4)2SO4

(NH4)2SO3+SO2+H2O＝2NH4HSO3

4(NH4)2SO3+2NO2＝4(NH4)2SO4+N2

the (NH4)2SO4 and NH4NO3 are generated by reaction, the (NH4)2SO4 and NH4NO3 solution which are generated at the same time can be used as fertilizers of crops after being heated and crystallized, the utilization rate of resources is improved, the environment-friendly function is realized, a first liquid accumulation groove 8 is arranged at the bottom of an inner cavity of a first spraying chamber 4 and is used for collecting and heating the generated (NH4)2SO4 and NH4NO3 solution, a first liquid outlet pipe 9 extending to the outer side of a cylinder body 1 is inserted into the outer wall of the left side of the first liquid accumulation groove 8, a valve is arranged on the first liquid outlet pipe 9 and is used for discharging the fertilizers, a second liquid accumulation groove 11 is arranged at the bottom of an inner cavity of the second spraying chamber 3, a gas which does not react in the first spraying chamber 4 is conveniently conveyed into the second spraying chamber 3 through the first liquid outlet pipe 10 to react thoroughly again, and a second liquid accumulation groove 11 and a resistor 12 are arranged on the first liquid accumulation groove 8 and the second heating wire 11, the liquid accumulation tank I8 and the liquid accumulation tank II 11 are both made of metal materials with good heat conductivity, heat insulation pads are arranged on the outer walls of the liquid accumulation tank I8 and the liquid accumulation tank II 11, when the resistance heating wire 12 is powered on to work, (NH4)2SO4 and NH4NO3 solutions generated in the liquid accumulation tank are heated to be concentrated and crystallized, here, it needs to be explained that the control of heating temperature is realized by controlling the current on the resistance heating wire 12 according to an external switch, a liquid storage tank 13 is installed at the top of the outer wall at the left side of the spray chamber II 3 and used for storing (NH4)2S solutions, a water outlet pipe at the outer wall at the left side of the liquid storage tank 13 is connected with a water inlet of a water pump I14, a liquid conveying pipe 15 is installed at a water outlet of the water pump I14, a spray disk II 16 is installed in the inner cavity of the liquid conveying pipe II 3, a branch pipe II connected with the spray disk II 16 and a branch pipe I connected with the spray disk I are respectively installed at the upper side and the lower side of The flue gas is respectively conveyed into a spray tray II 16 and a spray tray I7, so that the flue gas can be conveniently cleaned for multiple times, the desulfurization and denitrification efficiency is improved, regulating valves are respectively arranged on a branch pipe I and a branch pipe II, the flow of liquid can be conveniently controlled, a circulating pipe 17 is arranged at the right end of the spray tray II 16, a control valve is arranged at the top of the circulating pipe 17, so that the solution in a liquid accumulating tank II 11 or the solution in the spray tray II 16 can conveniently flow into a liquid accumulating tank I8 under the action of a water pump II 18, the back flushing action on the bottom of the liquid accumulating tank I8 is realized, the right end of the liquid accumulating tank II 11 is communicated with the circulating pipe 17 through the circulating branch pipe, the liquidity of the liquid in the liquid accumulating tank II 11 is improved, the liquid can be conveniently discharged from a liquid outlet pipe 9 after the liquid is heated and crystallized, the other end of the circulating pipe 17 extends to the outer, realize the back flush action, prevent that ponding groove 8 bottoms from scarring, avoid the jam condition to take place, make solution be heated more fully, defogging board 19 is installed to two 3 inner chambers of spray room, be convenient for block moisture and the less granule that does not clear away, ultraviolet germicidal lamp 20 is installed at two 3 inner chamber tops of spray room, be convenient for to carry out the action of disinfecting from outlet 21 combustion gas soon, outlet 21 has been seted up at barrel 1 top, electrical components in the device all passes through wire and external power switch electric connection.

The second spray tray 16 comprises a ring pipe 161 with a hollow structure, a liquid inlet 162 is formed in the outer wall of the left side of the ring pipe 161, mounting blocks 163 connected with the inner wall of the cylinder body 1 are arranged on the outer walls of the front side and the rear side of the ring pipe 161, spray pipes 164 are mounted on the inner wall of the ring pipe 161, the inner ends of the spray pipes 164 are communicated with a liquid accumulation pipe 165, a second liquid outlet pipe 166 is connected with the outer wall of the right side of the liquid accumulation pipe 165, six spray pipes 164 are arranged in an annular array, spray holes are uniformly formed in the bottom of each spray pipe 164 along the length direction, the spray area of the second spray tray 16 is effectively increased, the sprayed (NH4)2S solution can be conveniently;

the bottoms of the liquid accumulation groove I8 and the liquid accumulation groove II 11 are both obliquely arranged, the inclination angle is thirty degrees, the bottom of the liquid accumulation groove I8 is arranged in a mode of being low at the left and high at the right, the bottom of the liquid accumulation groove II 11 is arranged in a mode of being high at the right and low at the left, liquid flow is facilitated, and the situation that crystalline solids are scarred at the bottom of the inner cavity of the liquid accumulation groove is avoided;

the demisting plate 19 is a two-channel folding demisting plate, the folding channel of the two-channel folding demisting plate effectively blocks moisture and unremoved smaller particles in air during circulation, clamping strips are arranged at the left end and the right end of the demisting plate 19, and clamping grooves matched with the clamping strips are formed in the inner wall of the second spray chamber 3, so that the demisting plate 19 can be conveniently mounted and dismounted;

the filter is inserted into the inner cavity of the smoke inlet pipe 5 along the vertical direction and used for filtering large particle impurities contained in smoke, and the joint of the filter and the smoke inlet pipe 5 is provided with a sealing gasket to improve the sealing performance of the smoke inlet pipe.

The working principle is as follows: flue gas generated by coal combustion is introduced into the cylinder body 1 through the smoke inlet pipe 5, a (NH4)2S solution stored in the liquid storage tank 13 is respectively conveyed into the spraying disc II 16 and the spraying disc I7 through the liquid conveying pipe 15 and the upper branch pipe and the lower branch pipe by the water pump I14, the (NH4)2S solution is sprayed out by the spraying disc II 16 and the spraying disc I7 to chemically react with SO2 and NOX in the flue gas, the (NH4)2SO4 and NH4NO3 generated by the reaction are collected in the liquid accumulation groove I8 and the liquid accumulation groove II 11, the (NH4)2SO4 and NH4NO3 solutions generated in the two liquid accumulation grooves are heated by the resistance heating wire 12 to be concentrated and crystallized, the bottoms of the liquid accumulation groove I8 and the liquid accumulation groove II 11 are both obliquely arranged to facilitate liquid flow, the water pump II 18 is started, the solution in the liquid accumulation groove II 11 or the solution in the spraying disc II 16 flows into the liquid accumulation groove I8 under the action of the water pump II 18 to realize the back flushing action of the liquid accumulation groove I8, the bottom of the liquid accumulation groove I8 is prevented from being scabbed, the blocking condition is avoided, and finally concentrated solution is discharged through the liquid outlet pipe I9 and used as fertilizer of crops, so that the environment-friendly effect is achieved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a SOx/NOx control system's concentrated crystallization device, includes columniform barrel (1), its characterized in that: an inner cavity of the cylinder body (1) is divided into an upper spray chamber II (3) and a lower spray chamber I (4) through a partition plate (2), a smoke inlet pipe (5) and a fan (6) are installed on the outer wall of the left side of the spray chamber I (4), a spray disc I (7) is installed in the inner cavity of the spray chamber I (4), a liquid accumulation groove I (8) is installed at the bottom of the inner cavity of the spray chamber I (4), a liquid outlet pipe I (9) extending to the outer side of the cylinder body (1) is inserted into the outer wall of the left side of the spray chamber I (4), a smoke conveying pipe (10) communicated with the spray chamber II (3) is inserted into the outer wall of the left side of the spray chamber I (4), a liquid accumulation groove II (11) is installed at the bottom of the inner cavity of the spray chamber II (3), heating wire resistors (12) are installed on the liquid accumulation groove I (8) and the liquid accumulation groove II (11), a liquid storage tank (13) is installed at the top of the outer wall of the, an infusion tube (15) is installed at the water outlet of a first water pump (14), a second spray disc (16) is installed in the inner cavity of a second spray chamber (3), a second branch tube connected with the second spray disc (16) and a first branch tube connected with the first spray disc (7) are installed on the upper side and the lower side of the outer wall of the right side of the infusion tube (15) respectively, a circulating tube (17) is installed at the right end of the second spray disc (16), the other end of the circulating tube (17) extends to the outer side of a barrel body (1) and is connected with a water inlet of the second water pump (18), a flushing tube communicated with the right end of a liquid accumulating groove (8) is installed at the water outlet of the second water pump (18), a demisting plate (19) is installed in the inner cavity of the second spray chamber (3), an ultraviolet germicidal lamp (.

2. The concentration crystallization device of desulfurization and denitrification system according to claim 1, wherein: the second spray plate (16) comprises a ring pipe (161) of a hollow structure, a liquid inlet (162) is formed in the outer wall of the left side of the ring pipe (161), mounting blocks (163) connected with the inner wall of the cylinder body (1) are arranged on the outer walls of the front side and the rear side of the ring pipe (161), a spray pipe (164) is mounted on the inner wall of the ring pipe (161), the inner end of the spray pipe (164) is communicated with a liquid accumulation pipe (165), and the outer wall of the right side of the liquid accumulation pipe (165) is connected.

3. The concentration crystallization device of desulfurization and denitrification system according to claim 2, wherein: six spray pipes (164) are arranged in an annular array, and spray holes are uniformly formed in the bottom of each spray pipe (164) along the length direction.

4. The concentration crystallization device of desulfurization and denitrification system according to claim 1, wherein: the bottoms of the liquid accumulating tank I (8) and the liquid accumulating tank II (11) are both obliquely arranged, and the inclination angle is thirty degrees.

5. The concentration crystallization device of desulfurization and denitrification system according to claim 1, wherein: demisting board (19) are two-way folding type demisting board, and both ends all are provided with the card strip about demisting board (19), spray room two (3) inner wall seted up with card strip assorted draw-in groove.

6. The concentration crystallization device of desulfurization and denitrification system according to claim 1, wherein: the inner cavity of the smoke inlet pipe (5) is spliced with a filter plate along the vertical direction, and the joint of the filter plate and the smoke inlet pipe (5) is provided with a sealing gasket.