CN109850855A - A kind of production process and equipment of the concentrated sulfuric acid - Google Patents
A kind of production process and equipment of the concentrated sulfuric acid Download PDFInfo
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- CN109850855A CN109850855A CN201910118190.XA CN201910118190A CN109850855A CN 109850855 A CN109850855 A CN 109850855A CN 201910118190 A CN201910118190 A CN 201910118190A CN 109850855 A CN109850855 A CN 109850855A
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Abstract
The present invention relates to industrially prepared concentrated sulfuric acid technical fields, and disclose the production process and equipment of a kind of concentrated sulfuric acid, including fluidized bed furnace, the gas vent of the fluidized bed furnace is connected to one end of vulcanization gas-guide tube, the other end of the vulcanization gas-guide tube is connected to the gas feed of combustion heat reuse means, the gas vent of combustion heat reuse means side is connected to by vulcanizing gas-guide tube with the air inlet of exhaust fan, and the gas outlet of the exhaust fan is connected to by vulcanizing gas-guide tube with the air inlet of cyclone separator.The production process and equipment of the concentrated sulfuric acid, by the way that combustion heat reuse means is arranged, the water that the heat for generation of burning in fluidized bed furnace absorbs the concentrated sulfuric acid in drying tower is subjected to distillation separation by combustion heat reuse means, the concentration of the concentrated sulfuric acid is quickly restored, and continue to supply drying tower by the concentrated sulfuric acid recycled, to realize that the combustion heat recycles, while accelerating the cyclic absorption moisture content efficiency of drying tower.
Description
Technical field
The present invention relates to industrially prepared concentrated sulfuric acid technical field, the production process of specially a kind of concentrated sulfuric acid and set
It is standby.
Background technique
The concentrated sulfuric acid is commonly called as bad water, and the concentrated sulfuric acid refers to the sulfuric acid solution that mass fraction is greater than or equal to 70%, is a kind of with height
Corrosive strong mineral acid, while it also has dehydration property, strong corrosive, difficult volatility, acidity, water imbibition etc., is widely applied
In chemical field.
Currently there are contact method and lead-chamber process to the industrially prepared of the concentrated sulfuric acid, because the sulfuric acid concentration of lead-chamber process production is low and waste liquid
Exhaust gas causes secondary pollution and is gradually eliminated, industrial at present to prepare the concentrated sulfuric acid using contact method substantially, mainly produces
Cheng You: the manufacture of sulfur dioxide, sulfur dioxide are catalytically oxidized to the absorption of sulfur trioxide and sulfur trioxide and the production of sulfuric acid.Its
The chemical reaction being related to is as follows:
Raw material is prepared by the sulfur dioxide of troilite:
SO2Catalysis oxidation (equipment: contact chamber):
The absorption (sulfuric acid using 98.3%) of sulfur trioxide: SO3+H2SO4=H2S2O7(pyrosulfuric acid)
In the prior art, for SO2Catalytic oxidation process in a large amount of UTILIZATION OF VESIDUAL HEAT INs for generating it is more abundant, but due to SO2
Catalytic oxidation process be reversible reaction, the condition of catalysis controls in the unstable mixed gas that will lead to and come out in contact chamber
SO2Content is higher, can not be utilized in subsequent reaction, causes a large amount of element sulphur to be lost, not only causes raw materials for production
Waste, and easily pollute the environment, on the other hand, can not be had for the combustion heat in sulfur dioxide preparation process
Effect utilizes, and causes a large amount of wastes of resource, therefore propose the production process and equipment of a kind of concentrated sulfuric acid.
Summary of the invention
The present invention provides a kind of production process of concentrated sulfuric acid and equipment, the combustion heat for having sulfide is sufficiently sharp
With, the catalytic condition of stability contorting haptoreaction room, tail gas recycle recycle the advantages of, solve due to SO2Catalysis oxidation
Process is reversible reaction, and the condition of catalysis controls SO in the unstable mixed gas that will lead to and come out in contact chamber2Content is higher,
It can not be utilized in subsequent reaction, cause a large amount of element sulphur to be lost, not only cause the waste of raw materials for production, Er Qieyi
It pollutes the environment, on the other hand, can not be effectively used for the combustion heat in sulfur dioxide preparation process, cause to provide
The problem of source largely wastes.
The invention provides the following technical scheme: a kind of concentrated sulfuric acid manufactures equipment, including fluidized bed furnace, the fluidized bed furnace
Gas vent with vulcanization gas-guide tube one end be connected to, it is described vulcanization gas-guide tube the other end and combustion heat reuse means gas
The gas vent of body inlet communication, combustion heat reuse means side is connected by the air inlet of vulcanization gas-guide tube and exhaust fan
Logical, the gas outlet of the exhaust fan is connected to by vulcanizing gas-guide tube with the air inlet of cyclone separator, the cyclone separator
Gas outlet is connected to the air inlet of wash mill, and the liquid outlet of the wash mill bottom end passes through dilute sulfuric acid conduit and dilute sulfuric acid collection
The bottom end of liquid bath inner cavity is connected to, and the other side of dilute sulfuric acid collecting tank inner cavity bottom end is equipped with dilute sulfuric acid return pipe, dilute sulphur
The other end of sour return pipe is connected to the inlet of dilute sulfuric acid drawing liquid pump, the liquid outlet and wash mill of the dilute sulfuric acid drawing liquid pump
The inlet on top is connected to, and the gas outlet of the wash mill is connected to the air inlet of drying tower side bottom end, the drying tower
The liquid outlet of bottom end is connected to the inlet of combustion heat reuse means, the outlet of combustion heat reuse means top side
Mouth is connected to by steam lead with the bottom end of dilute sulfuric acid collecting tank inner cavity, the liquid outlet of the combustion heat reuse means other side
It is connected to by concentrated sulfuric acid conduit with the bottom end of concentrated sulfuric acid collecting tank inner cavity, the other side of concentrated sulfuric acid collecting tank inner cavity bottom end is logical
Concentrated sulfuric acid return pipe is crossed to be connected to the inlet of concentrated sulfuric acid drawing liquid pump, the liquid outlet of the concentrated sulfuric acid drawing liquid pump and drying tower into
The connection of liquid mouth, the gas outlet on drying tower other side top are connected to the air inlet of I side bottom end of heat-exchanger rig, the heat exchange
The gas outlet on I other side top of device is connected to the air inlet on temperature compensation means top, the temperature compensation means bottom end
Gas outlet is connected to the air inlet of haptoreaction device side bottom end, and the gas outlet of the haptoreaction the bottom of the device and heat exchange fill
The air inlet connection on I top is set, the gas outlet of I bottom end of heat-exchanger rig is connected to the air inlet on II top of heat-exchanger rig, institute
The top of the bottom end and the other side of stating II side of heat-exchanger rig sets air intlet and air outlet slit, II bottom of heat-exchanger rig respectively
The gas outlet at end is connected to the air inlet of absorption tower side bottom end, the gas outlet on absorption tower other side top and waste gas absorption
The bottom end of box cavity is connected to, and the waste gas absorption case is provided with ammonium hydroxide.
Preferably, the combustion heat reuse means includes distillation case, is fixedly installed in the middle part of the distillation box cavity
The side of liquid islocation plate, the distillation case top is fixedly installed with steam (vapor) outlet, the top of the steam (vapor) outlet and steam lead
The other side of one end connection, the distillation case top is fixedly installed with concentrated sulfuric acid entrance, the top of the concentrated sulfuric acid entrance and dry
The liquid outlet connection at dry tower bottom end, the side at the distillation bottom end and the lower section for being located at steam lead are equipped with vulcanization gas import I,
The top of the vulcanization gas import I is connected to the inner cavity that distillation case is located at below liquid islocation plate, the other end of the vulcanization gas import I
It is connected to the gas outlet of fluidized bed furnace by vulcanizing gas-guide tube, the side of the distillation case is fixedly installed with vulcanization gas outlet I, described
One end of vulcanization gas outlet I is connected to the inner cavity that distillation case is located at below liquid islocation plate, and the other end of vulcanization gas outlet I passes through
Vulcanization gas-guide tube is connected to the air inlet of exhaust fan.
Preferably, the angle of the liquid islocation plate and horizontal plane is 15 degree, and its high-end lower section positioned at concentrated sulfuric acid entrance,
Low side is located at the top of vulcanization gas import I, and the side of the liquid islocation plate bottom end is connected to one end of concentrated sulfuric acid conduit, described every liquid
The material of plate is stainless steel.
Preferably, the wash mill includes washer box, and the bottom end of the washing box cavity is fixedly installed with filter screen, institute
State filter screen be stainless steel cloth, the bottom end of the washer box side be fixedly installed with vulcanization gas import II, the vulcanization gas into
One end of mouth II protrudes into the inside of washer box and is located at the top of filter screen, the other end and whirlwind point of the vulcanization gas import II
Gas outlet connection from device, the top of the washer box other side are fixedly installed with vulcanization gas outlet II, the vulcanization gas outlet
II one end is connected to the air inlet of drying tower side bottom end, and the top of the washing box cavity is fixedly installed with dilute sulfuric acid spray
Head, the top of the dilute sulfuric acid spray head are stretched out the top of washer box and are connected to the liquid outlet of dilute sulfuric acid drawing liquid pump, the washing
The bottom end of case is fixedly installed with dilute sulfuric acid outlet, and the bottom end of the dilute sulfuric acid outlet passes through dilute sulfuric acid conduit and dilute sulfuric acid collecting tank
The bottom end of inner cavity is connected to.
Preferably, the heat-exchanger rig I include heat exchange box, it is described heat exchange box cavity upper and lower ends be fixedly installed with every
Gas plate, upper and lower ends of the inside of two gas barriers respectively with heat exchange gas-guide tube are fixedly attached, in the heat exchange gas-guide tube
The inner cavity that the both ends of chamber are located at two gas barrier sides with heat exchange box respectively is connected to, and the bottom end of the heat exchange box side is fixedly mounted
There is vulcanization gas import III, one end of the vulcanization gas import III protrudes into the inside of heat exchange box and is located at the top of bottom gas barrier,
The other end of the vulcanization gas import III is connected to the gas outlet on drying tower side top, and the top of the heat exchange box other side is solid
Dingan County protrudes into the inside of heat exchange box and is located at top gas barrier equipped with vulcanization gas outlet III, one end of vulcanization gas outlet III
The other end of lower section, vulcanization gas outlet III is connected to the air inlet on temperature compensation means top, the top of the heat exchange box
It is fixedly installed with hot-fluid import, the bottom end of the hot-fluid import protrudes into the inside of heat exchange box and is located at the top of top gas barrier,
The top of the hot-fluid import is connected to the gas outlet of haptoreaction the bottom of the device.
Preferably, the temperature compensation means includes compensation box, and the inside of the compensation box is fixedly installed with heat exchanger tube, institute
State heat exchanger tube one end stretch out compensation box top side and with vulcanization gas outlet III one end be connected to, the heat exchanger tube it is another
End is stretched out the other side of compensation box bottom end and is connected to the air inlet of haptoreaction device side bottom end, the inner wall of the compensation box
It is fixedly installed with electrothermal tube, the top of the compensation box cavity is fixedly installed with temperature sensor.
Preferably, the output end of the temperature sensor is electrically connected with the input terminal of signal processor, the signal processing
The output end of device is electrically connected with the input terminal of PLC controller, and the output end of the PLC controller and the input terminal of electrothermal tube are electrically connected
It connects.
Preferably, the haptoreaction device includes contact reaction tower, and the inner wall of the contact reaction tower is fixedly installed with
Ring catalyst, there are four the quantity of the ring catalyst is set, and four ring catalysts successively equidistant placement from top to bottom,
The bottom end of the contact reaction tower side is fixedly installed with vulcanization gas import IV, and contact is protruded into one end of the vulcanization gas import IV
The inside of reaction tower and between third and the 4th ring catalyst, the other end and heat exchanger tube of the vulcanization gas import IV
One end positioned at compensation box bottom is connected to, and the top of the contact reaction tower other side is fixedly installed with vulcanization gas circulation pipe, institute
The one end for stating vulcanization gas circulation pipe protrudes into the inside of contact reaction tower and between first and second ring catalyst, institute
The other end for stating vulcanization gas circulation pipe is connected to the top of contact reaction tower inner cavity, and the bottom end of the contact reaction tower is fixedly mounted
There is vulcanization gas outlet IV, the bottom end of vulcanization gas outlet IV is connected to one end of hot-fluid import.
A kind of production process of the concentrated sulfuric acid includes following process flow:
S1, appropriate iron sulfide mineral is put into fluidized bed furnace, and be passed through enough air；
The high temperature sulfur dioxide generated in S2, fluidized bed furnace mixes with air object and impurity particle and recycles by the combustion heat
Device, then gas flow rate is accelerated by exhaust fan, into cyclone separator in realize gas solid separation, the remaining gas-solid that can not be separated
Mixture enters in wash mill；
S3, the dilute sulfuric acid in dilute sulfuric acid collecting tank is extracted out by dilute sulfuric acid drawing liquid pump and is sprayed by dilute sulfuric acid spray head, it is right
Vulcanize the gas that gas import II enters and carry out de-burring dust-fall, solid particle polluter is fallen on filter screen, and remaining liquid enters dilute
It is recycled in sulfuric acid collecting tank, mixes with air gas by the sulfur dioxide of purification and impurity removal and enter in drying tower；
S4, the concentrated sulfuric acid in concentrated sulfuric acid collecting tank is extracted out by concentrated sulfuric acid drawing liquid pump and is sprayed into drying tower, to drying tower
Interior gaseous mixture absorbent drying, the concentrated sulfuric acid after water suction are entered on liquid islocation plate by concentrated sulfuric acid entrance, and by liquid islocation plate below
Mixed gas after burning heats, and the moisture in the concentrated sulfuric acid is discharged into dilute sulfuric acid collecting tank by steam lead, after distillation
The concentrated sulfuric acid is entered in concentrated sulfuric acid collecting tank by concentrated sulfuric acid conduit；
S5, dried by drying tower after mixed gas enter in heat-exchanger rig I, then from vulcanization gas outlet III enter heat exchanger tube
Interior, temperature in electrothermal tube real-time detection compensation box is simultaneously sent to PLC controller analysis processing by signal processor, and preset
500 degrees Celsius are made comparisons, and are lower than 500 degrees Celsius, i.e., are powered by PLC controller starting electrothermal tube and are carried out to the air in compensation box
It is heated to predetermined temperature；
S6, entered in haptoreaction device by the mixed gas that heat exchanger tube comes out, mixed gas is by ring catalyst
Catalysed oxidn simultaneously releases big calorimetric, and the macromolecular gas of generation, which is discharged and enters from hot-fluid import from vulcanization gas outlet IV, to be changed
Thermal conductivity is intratracheal, and the mixed gas entered to vulcanization gas import III preheats, by the final sulfur trioxide of hot outlets discharge and few
Amount sulfur dioxide and air Mixture enter in heat-exchanger rig II；
S7, the structure of heat-exchanger rig II are identical with heat-exchanger rig I, and cold media gas imports heat exchanging by new cold air
Heating agent gas in device II carries out cooling；
It is sprayed using the 98.3% industrial concentrated sulfuric acid to sulfur trioxide absorption on top in S8, absorption tower；
Unabsorbed sulfur dioxide is discharged into waste gas absorption case in S9, absorption tower, is absorbed by the ammonium hydroxide in waste gas absorption case.
The present invention have it is following the utility model has the advantages that
1, the production process and equipment of the concentrated sulfuric acid, it is sharp again by the combustion heat by the way that combustion heat reuse means is arranged
The water that the heat for generation of burning in fluidized bed furnace absorbs the concentrated sulfuric acid in drying tower is subjected to distillation separation with device, so that the concentrated sulfuric acid
Concentration can quickly be restored, and continue drying tower is supplied by the concentrated sulfuric acid recycled, to realize the combustion heat again
It utilizes, while accelerating the cyclic absorption moisture content efficiency of drying tower.
2, the production process and equipment of the concentrated sulfuric acid is contacted by the way that temperature compensation means is arranged by I Dui of heat-exchanger rig
While the big calorimetric that haptoreaction generates in reaction unit is recycled, come out by temperature compensation means exchange thermal I
Mixer detection go forward side by side trip temperature indemnifying measure so that guaranteeing be catalyzed into the reaction gas temperature in haptoreaction device
Needed for reaction on 500 degrees Celsius, to ensure that SO in haptoreaction device2The positive of catalytic oxidation carry out,
It improves to SO2Utilization rate.
3, the production process and equipment of the concentrated sulfuric acid, by the way that waste gas absorption case is arranged, by the ammonia in waste gas absorption case
Water is to the SO in tail gas2It is absorbed, atmosphere is discharged in nitrogen in tail gas insoluble in ammonium hydroxide etc., on the one hand, protection environment is exempted from
Pollution, on the other hand, absorbing liquid can be used for producing the raw material of nitrogenous fertilizer.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention；
Fig. 2 is combustion heat reuse means structural schematic diagram of the present invention；
Fig. 3 is wash mill structural schematic diagram of the present invention；
Fig. 4 is I structural schematic diagram of heat-exchanger rig of the present invention；
Fig. 5 is temperature compensation means structural schematic diagram of the present invention；
Fig. 6 is haptoreaction apparatus structure schematic diagram of the present invention；
Fig. 7 is that ring catalyst of the present invention and contact reaction tower install top view；
Fig. 8 is temperature sensor system control block diagram of the present invention.
In figure: 1, fluidized bed furnace；2, vulcanize gas-guide tube；3, combustion heat reuse means；31, case is distilled；32, liquid islocation plate；33,
Steam (vapor) outlet；34, concentrated sulfuric acid entrance；35, vulcanize gas import I；36, vulcanization gas outlet I；4, exhaust fan；5, cyclone separator；6,
Wash mill；61, washer box；62, filter screen；63, vulcanize gas import II；64, vulcanization gas outlet II；65, dilute sulfuric acid spray head；
66, dilute sulfuric acid exports；7, dilute sulfuric acid conduit；8, dilute sulfuric acid collecting tank；9, dilute sulfuric acid return pipe；10, dilute sulfuric acid drawing liquid pump；11,
Drying tower；12, steam lead；13, concentrated sulfuric acid conduit；14, concentrated sulfuric acid collecting tank；15, concentrated sulfuric acid return pipe；16, the concentrated sulfuric acid is taken out
Liquid pump；17, heat-exchanger rig I；171, heat exchange box；172, gas barrier；173, exchange heat gas-guide tube；174, vulcanize gas import III；175,
Vulcanize gas outlet III；176, hot-fluid import；177, hot outlets；18, temperature compensation means；181, compensation box；182, heat exchanger tube；
183, electrothermal tube；184, temperature sensor；19, haptoreaction device；191, contact reaction tower；192, ring catalyst；193,
Vulcanize gas import IV；194, vulcanize gas circulation pipe；195, vulcanization gas outlet IV；20, heat-exchanger rig II；21, absorption tower；22, it gives up
Aspiration case；23, signal processor；24, PLC controller.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Please refer to Fig. 1-8, a kind of concentrated sulfuric acid manufactures equipment, including fluidized bed furnace 1, the gas vent of fluidized bed furnace 1 with
Vulcanize one end connection of gas-guide tube 2, the other end of vulcanization gas-guide tube 2 is connected to the gas feed of combustion heat reuse means 3, fires
The gas vent for heating 3 side of reuse means is connected to by vulcanizing gas-guide tube 2 with the air inlet of exhaust fan 4, and the combustion heat is sharp again
Include distillation case 31 with device 3, distills and be fixedly installed with liquid islocation plate 32, the folder of liquid islocation plate 32 and horizontal plane in the middle part of 31 inner cavity of case
Angle is 15 degree, and its high-end lower section positioned at concentrated sulfuric acid entrance 34, and low side is located at the top of vulcanization gas import I 35,15 degree
Gradient slowly flows down convenient for the concentrated sulfuric acid, the hot gas heating evaporation moisture therein sufficiently transmitted by fluidized bed furnace 1,32 bottom of liquid islocation plate
The side at end is connected to one end of concentrated sulfuric acid conduit 13, and the material of liquid islocation plate 32 is stainless steel, and liquid islocation plate 32 will distill case 31
Inner cavity is divided into top gas-liquid mixed chamber and lower gas chamber, and the side on distillation 31 top of case is fixedly installed with steam (vapor) outlet 33, steams
The top of vapor outlet 33 is connected to one end of steam lead 12, and the other side on distillation 31 top of case is fixedly installed with concentrated sulfuric acid entrance
34, the top of concentrated sulfuric acid entrance 34 is connected to the liquid outlet of 11 bottom end of drying tower, is distilled the side of 31 bottom end of case and is located at steam
The lower section of conduit 12 is equipped with vulcanization gas import I 35, and the top and distillation case 31 for vulcanizing gas import I 35 are located at 32 lower section of liquid islocation plate
Inner cavity connection, the other end for vulcanizing gas import I 35 are connected to the gas outlet of fluidized bed furnace 1 by vulcanizing gas-guide tube 2, distillation case 31
Side is fixedly installed with vulcanization gas outlet I 36, and one end and the distillation case 31 of vulcanization gas outlet I 36 are located at the interior of 32 lower section of liquid islocation plate
The other end of chamber connection, vulcanization gas outlet I 36 is connected to by vulcanizing gas-guide tube 2 with the air inlet of exhaust fan 4, and exhaust fan 4 goes out
Port by vulcanize gas-guide tube 2 be connected to the air inlet of cyclone separator 5, in this specification, about reaction gas (sulfur dioxide and
Oxygen mixture) connecting tube be using vulcanization gas-guide tube 2 equipment is connected to, for avoid description repetition repeat, will set
Reaction gas communicating pipe between standby omits, and the gas outlet of cyclone separator 5 is connected to the air inlet of wash mill 6, and wash mill 6 wraps
Washer box 61 is included, the bottom end of 61 inner cavity of washer box is fixedly installed with filter screen 62, and filter screen 62 is stainless steel cloth, washer box 61
The bottom end of side is fixedly installed with vulcanization gas import II 63, and inside and the position of washer box 61 are protruded into one end of vulcanization gas import II 63
In the top of filter screen 62, the other end for vulcanizing gas import II 63 is connected to the gas outlet of cyclone separator 5, and washer box 61 is another
The top of side is fixedly installed with vulcanization gas outlet II 64, the air inlet of one end and 11 side bottom end of drying tower of vulcanization gas outlet II 64
Mouth connection, the top of 61 inner cavity of washer box are fixedly installed with dilute sulfuric acid spray head 65, and washer box is stretched out on the top of dilute sulfuric acid spray head 65
It 61 top and being connected to the liquid outlet of dilute sulfuric acid drawing liquid pump 10, the bottom end of washer box 61 is fixedly installed with dilute sulfuric acid outlet 66,
The bottom end of dilute sulfuric acid outlet 66 is connected to by dilute sulfuric acid conduit 7 with the bottom end of 8 inner cavity of dilute sulfuric acid collecting tank, the setting of filter screen 62
Can be convenient for the bulky grain solid object that depositing dust leaves be left, small particle can be flowed with equipment, the normal operation of equipment is not influenced,
The liquid outlet of 6 bottom end of wash mill is connected to by dilute sulfuric acid conduit 7 with the bottom end of 8 inner cavity of dilute sulfuric acid collecting tank, dilute sulfuric acid liquid collecting
The other side of 8 inner cavity bottom end of slot is equipped with dilute sulfuric acid return pipe 9, the other end and the dilute sulfuric acid drawing liquid pump 10 of dilute sulfuric acid return pipe 9
Inlet connection, the liquid outlet of dilute sulfuric acid drawing liquid pump 10 are connected to the inlet on 6 top of wash mill, the outlet of wash mill 6
Mouthful be connected to the air inlet of 11 side bottom end of drying tower, the liquid outlet of 11 bottom end of drying tower and combustion heat reuse means 3 into
The gas outlet of the connection of liquid mouth, 3 top side of combustion heat reuse means passes through steam lead 12 and 8 inner cavity of dilute sulfuric acid collecting tank
The liquid outlet of bottom end connection, 3 other side of combustion heat reuse means passes through concentrated sulfuric acid conduit 13 and 14 inner cavity of concentrated sulfuric acid collecting tank
Bottom end connection, the other side of 14 inner cavity bottom end of concentrated sulfuric acid collecting tank passes through concentrated sulfuric acid return pipe 15 and concentrated sulfuric acid drawing liquid pump 16
Inlet connection, the liquid outlet of concentrated sulfuric acid drawing liquid pump 16 are connected to the inlet of drying tower 11, exhaust fan 4, dilute sulfuric acid drawing liquid pump
10 and concentrated sulfuric acid drawing liquid pump 16 and sulfuric acid contact part be all made of stainless steel material production, the outlet on 11 other side top of drying tower
Mouth is connected to the air inlet of I 17 side bottom end of heat-exchanger rig, and the gas outlet on I 17 other side top of heat-exchanger rig and temperature-compensating fill
The air inlet connection on 18 tops is set, heat-exchanger rig I 17 includes heat exchange box 171, the fixed peace of the upper and lower ends of 171 inner cavity of heat exchange box
Equipped with gas barrier 172, upper and lower ends of the inside of two gas barriers 172 respectively with heat exchange gas-guide tube 173 are fixedly attached, and heat exchange is led
The inner cavity that the both ends of 173 inner cavity of tracheae are located at two 172 sides of gas barrier with heat exchange box 171 respectively is connected to, 171 side of heat exchange box
Bottom end be fixedly installed with vulcanization gas import III 174, inside and the position of heat exchange box 171 are protruded into one end of vulcanization gas import III 174
In the top of bottom gas barrier 172, the other end for vulcanizing gas import III 174 is connected to the gas outlet on 11 side top of drying tower,
The top of 171 other side of heat exchange box is fixedly installed with vulcanization gas outlet III 175, and heat exchange is protruded into one end of vulcanization gas outlet III 175
The inside of case 171 and the lower section for being located at top gas barrier 172, the other end and temperature compensation means 18 of vulcanization gas outlet III 175
The air inlet on top is connected to, and the top of heat exchange box 171 is fixedly installed with hot-fluid import 176, and the bottom end of hot-fluid import 176, which is protruded into, to be changed
The inside of hot tank 171 and the top for being located at top gas barrier 172, the top and 19 bottom end of haptoreaction device of hot-fluid import 176
Gas outlet connection, gas converting heat efficiency, 18 bottom end of temperature compensation means can be improved in the multicolumn shape heat exchanger tube in heat-exchanger rig I 17
Gas outlet be connected to the air inlet of 19 side bottom end of haptoreaction device, temperature compensation means 18 include compensation box 181, compensation
The inside of case 181 is fixedly installed with heat exchanger tube 182, one end of heat exchanger tube 182 stretch out the side on 181 top of compensation box and with vulcanization
The other end of one end connection of gas outlet III 175, heat exchanger tube 182 stretches out the other side and and the haptoreaction of 181 bottom end of compensation box
The air inlet of 19 side bottom end of device is connected to, and the inner wall of compensation box 181 is fixedly installed with electrothermal tube 183,181 inner cavity of compensation box
Top is fixedly installed with temperature sensor 184, and the input terminal of the output end and signal processor 23 of temperature sensor 184 is electrically connected
It connects, the output end of signal processor 23 is electrically connected with the input terminal of PLC controller 24, the output end and electric heating of PLC controller 24
The input terminal of pipe 183 is electrically connected, and signal processor 23 is converted to digital signal to the electric signal for transmitting temperature sensor 184
It transfers, the signal that PLC controller 24 is sent to judge signal processor 23, and exports according to determining program for PLC controller 24
The gas outlet of powered off and on two kinds of signals, 19 bottom end of haptoreaction device is connected to the air inlet on I 17 top of heat-exchanger rig, is connect
Touching reaction unit 19 includes contact reaction tower 191, and the inner wall of contact reaction tower 191 is fixedly installed with ring catalyst 192, annular
There are four the quantity of catalyst 192 is set, and four ring catalysts 192 successively equidistant placement from top to bottom, contact reaction tower 191
The bottom end of side is fixedly installed with vulcanization gas import IV 193, and contact reaction tower 191 is protruded into one end of vulcanization gas import IV 193
It is internal and positioned at third and the 4th ring catalyst 192 between, vulcanize gas import IV 193 the other end and heat exchanger tube 182
It being connected in one end of 181 bottom of compensation box, the top of 191 other side of contact reaction tower is fixedly installed with vulcanization gas circulation pipe 194,
One end of vulcanization gas circulation pipe 194 protrudes into the inside of contact reaction tower 191 and is located at first and second ring catalyst 192
Between, the other end of vulcanization gas circulation pipe 194 is connected to the top of 191 inner cavity of contact reaction tower, the bottom end of contact reaction tower 191
Be fixedly installed with vulcanization gas outlet IV 195, vulcanization gas outlet IV 195 bottom end be connected to one end of hot-fluid import 176, pass through by
Ring catalyst 192, after can vulcanizing the sulfur dioxide and oxygen mixture contact-catalytic oxidation that gas import IV 193 is transmitted, greatly
Molecule sulfur trioxide falls into vulcanization gas outlet IV 195, and micro-molecular gas continues to reenter contact by vulcanization gas circulation pipe 194
Catalysis oxidation is carried out in reaction tower 191 again, to improve the conversion ratio of catalysis oxidation, ring catalyst 192 is by five oxidations two
Vanadium is made ring-type and is fixed on 191 inner wall of contact reaction tower, and the gas outlet of I 17 bottom end of heat-exchanger rig and heat-exchanger rig II 20 push up
The air inlet at end is connected to, and the bottom end of II 20 side of heat-exchanger rig and the top of the other side set air intlet and air outlet slit respectively,
The gas outlet of II 20 bottom end of heat-exchanger rig is connected to the air inlet of 21 side bottom end of absorption tower, and 21 other side top of absorption tower goes out
Port is connected to the bottom end of 22 inner cavity of waste gas absorption case, and waste gas absorption case 22 is provided with ammonium hydroxide.
A kind of production process of the concentrated sulfuric acid includes following process flow:
S1, appropriate iron sulfide mineral is put into fluidized bed furnace 1, and be passed through enough air；
It is sharp again by the combustion heat that the high temperature sulfur dioxide generated in S2, fluidized bed furnace 1 mixes with air object and impurity particle
Accelerate gas flow rate with device 3, then by exhaust fan 4, into cyclone separator 5 in realize gas solid separation, it is remaining to separate
Gas-solid mixture enter in wash mill 6；
S3, the dilute sulfuric acid in dilute sulfuric acid collecting tank 8 is extracted out by dilute sulfuric acid drawing liquid pump 10 and is sprayed by dilute sulfuric acid spray head 65
Out, the gas entered to vulcanization gas import II 63 carries out de-burring dust-fall, and solid particle polluter is fallen on filter screen 62, remaining liquid
Body, which enters in dilute sulfuric acid collecting tank 8, to be recycled, and is mixed with air gas by the sulfur dioxide of purification and impurity removal and is entered drying tower 11
It is interior；
S4, the concentrated sulfuric acid in concentrated sulfuric acid collecting tank 14 is extracted out by concentrated sulfuric acid drawing liquid pump 16 and is sprayed into drying tower 11, it is right
Gaseous mixture absorbent drying in drying tower 11, the concentrated sulfuric acid after water suction are entered on liquid islocation plate 32 by concentrated sulfuric acid entrance 34, and by
Mixed gas after the burning of 32 lower section of liquid islocation plate heats, and the moisture in the concentrated sulfuric acid is discharged into dilute sulfuric acid collection by steam lead 12
In liquid bath 8, the concentrated sulfuric acid after distillation is entered in concentrated sulfuric acid collecting tank 14 by concentrated sulfuric acid conduit 13；
S5, entered in heat-exchanger rig I 17 by mixed gas of the drying tower 11 after dry, then from vulcanization gas outlet III 175 into
Enter in heat exchanger tube 182, the temperature in 183 real-time detection compensation box 181 of electrothermal tube is simultaneously sent to PLC control by signal processor 23
24 analysis of device processing, makes comparisons with preset 500 degrees Celsius, is lower than 500 degrees Celsius, i.e., starts electrothermal tube by PLC controller 24
183, which are powered, carries out the air in compensation box 181 to be heated to predetermined temperature；
S6, entered in haptoreaction device 19 by the mixed gas that heat exchanger tube 182 comes out, mixed gas is by annular catalyst
The catalysed oxidn of agent 192 simultaneously releases big calorimetric, and the macromolecular gas of generation is from IV 195 discharge of vulcanization gas outlet and from hot-fluid
Import 176 enters in heat exchange gas-guide tube 173, and the mixed gas entered to vulcanization gas import III 174 preheats, by hot outlets 177
The final sulfur trioxide of discharge enters in heat-exchanger rig II 20 with a small amount of sulfur dioxide and air Mixture；
S7, the structure of heat-exchanger rig II 20 are identical with heat-exchanger rig I 17, and cold media gas is by new cold air importing pair
Heating agent gas in heat-exchanger rig II 20 carries out cooling；
It is sprayed using the 98.3% industrial concentrated sulfuric acid to sulfur trioxide absorption on top in S8, absorption tower 21；
Unabsorbed sulfur dioxide is discharged into waste gas absorption case 22 in S9, absorption tower 21, by the ammonia in waste gas absorption case 22
Water absorbs.
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.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (9)
1. a kind of concentrated sulfuric acid manufactures equipment, including fluidized bed furnace (1), it is characterised in that: the gas of the fluidized bed furnace (1) goes out
Mouth is connected to one end of vulcanization gas-guide tube (2), the other end and combustion heat reuse means (3) of vulcanization gas-guide tube (2)
The gas vent of gas feed connection, combustion heat reuse means (3) side passes through vulcanization gas-guide tube (2) and exhaust fan
(4) air inlet connection, the air inlet that the gas outlet of the exhaust fan (4) passes through vulcanization gas-guide tube (2) and cyclone separator (5)
Connection, the gas outlet of the cyclone separator (5) are connected to the air inlet of wash mill (6), wash mill (6) bottom end
Liquid outlet is connected to by dilute sulfuric acid conduit (7) with the bottom end of dilute sulfuric acid collecting tank (8) inner cavity, in the dilute sulfuric acid collecting tank (8)
The other side at bottom of chamber end is equipped with dilute sulfuric acid return pipe (9), the other end and dilute sulfuric acid drawing liquid pump of the dilute sulfuric acid return pipe (9)
(10) inlet connection, the liquid outlet of the dilute sulfuric acid drawing liquid pump (10) are connected to the inlet on wash mill (6) top, institute
The gas outlet for stating wash mill (6) is connected to the air inlet of drying tower (11) side bottom end, and drying tower (11) bottom end goes out
Liquid mouth is connected to the inlet of combustion heat reuse means (3), the gas outlet of combustion heat reuse means (3) the top side
It is connected to by steam lead (12) with the bottom end of dilute sulfuric acid collecting tank (8) inner cavity, combustion heat reuse means (3) other side
Liquid outlet be connected to the bottom end of concentrated sulfuric acid collecting tank (14) inner cavity by concentrated sulfuric acid conduit (13), the concentrated sulfuric acid collecting tank
(14) other side of inner cavity bottom end is connected to by concentrated sulfuric acid return pipe (15) with the inlet of concentrated sulfuric acid drawing liquid pump (16), described dense
The liquid outlet of sulfuric acid drawing liquid pump (16) is connected to the inlet of drying tower (11), the outlet on drying tower (11) other side top
Mouth is connected to the air inlet of heat-exchanger rig I (17) side bottom end, the gas outlet on heat-exchanger rig I (17) other side top and temperature
Spend the air inlet connection on compensation device (18) top, the gas outlet of temperature compensation means (18) bottom end and haptoreaction device
(19) the air inlet connection of side bottom end, the gas outlet and heat-exchanger rig I (17) top of haptoreaction device (19) bottom end
Air inlet connection, the gas outlet of heat-exchanger rig I (17) bottom end is connected to the air inlet on heat-exchanger rig II (20) top, institute
The top of the bottom end and the other side of stating heat-exchanger rig II (20) side sets air intlet and air outlet slit, the heat-exchanger rig respectively
The gas outlet of II (20) bottom end is connected to the air inlet of absorption tower (21) side bottom end, absorption tower (21) other side top
Gas outlet is connected to the bottom end of waste gas absorption case (22) inner cavity, and the waste gas absorption case (22) is provided with ammonium hydroxide.
2. a kind of concentrated sulfuric acid according to claim 1 manufactures equipment, it is characterised in that: the combustion heat recycles
Device (3) includes distillation case (31), is fixedly installed with liquid islocation plate (32) in the middle part of distillation case (31) inner cavity, the distillation case
(31) side on top is fixedly installed with steam (vapor) outlet (33), and the one of the top of the steam (vapor) outlet (33) and steam lead (12)
The other side of end connection, described distillation case (31) top is fixedly installed with concentrated sulfuric acid entrance (34), the concentrated sulfuric acid entrance (34)
Top be connected to the liquid outlet of drying tower (11) bottom end, it is described distillation case (31) bottom end side and be located at steam lead (12)
Lower section be equipped with vulcanization gas import I (35), it is described vulcanization gas import I (35) top and distillation case (31) be located at liquid islocation plate (32)
The inner cavity of lower section is connected to, and the other end of vulcanization gas import I (35) and the gas outlet of fluidized bed furnace (1) pass through vulcanization gas-guide tube
(2) it is connected to, the side of distillation case (31) is fixedly installed with vulcanization gas and exports I (36), and the vulcanization gas exports the one of I (36)
The inner cavity being located at below liquid islocation plate (32) with distillation case (31) is held to be connected to, the other end that the vulcanization gas exports I (36) passes through sulphur
Change gas-guide tube (2) to be connected to the air inlet of exhaust fan (4).
3. a kind of concentrated sulfuric acid according to claim 2 manufactures equipment, it is characterised in that: the liquid islocation plate (32) with
The angle of horizontal plane is 15 degree, and its high-end lower section positioned at concentrated sulfuric acid entrance (34), and low side is located at vulcanization gas import I (35)
Top, the side of liquid islocation plate (32) bottom end is connected to one end of concentrated sulfuric acid conduit (13), the material of the liquid islocation plate (32)
Material is stainless steel.
4. a kind of concentrated sulfuric acid according to claim 1 manufactures equipment, it is characterised in that: the wash mill (6)
Including washer box (61), the bottom end of washer box (61) inner cavity is fixedly installed with filter screen (62), and the filter screen (62) is
Stainless steel cloth, the bottom end of washer box (61) side are fixedly installed with vulcanization gas import II (63), the vulcanization gas import
One end of II (63) protrudes into the inside of washer box (61) and is located at the top of filter screen (62), vulcanization gas import II (63)
The other end is connected to the gas outlet of cyclone separator (5), and the top of washer box (61) other side is fixedly installed with vulcanization gas
II (64) are exported, one end that the vulcanization gas exports II (64) is connected to the air inlet of drying tower (11) side bottom end, described to wash
The top for washing case (61) inner cavity is fixedly installed with dilute sulfuric acid spray head (65), and washer box is stretched out on the top of the dilute sulfuric acid spray head (65)
(61) it top and is connected to the liquid outlet of dilute sulfuric acid drawing liquid pump (10), the bottom end of the washer box (61) is fixedly installed with dilute sulphur
The bottom end of acid outlet (66), the dilute sulfuric acid outlet (66) passes through the bottom of dilute sulfuric acid conduit (7) and dilute sulfuric acid collecting tank (8) inner cavity
End connection.
5. a kind of concentrated sulfuric acid according to claim 1 manufactures equipment, it is characterised in that: the heat-exchanger rig I
It (17) include heat exchange box (171), the upper and lower ends of heat exchange box (171) inner cavity are fixedly installed with gas barrier (172), and two
Upper and lower ends of the inside of the gas barrier (172) respectively with heat exchange gas-guide tube (173) are fixedly attached, the heat exchange gas-guide tube
(173) inner cavity that the both ends of inner cavity are located at two gas barrier (172) sides with heat exchange box (171) respectively is connected to, the heat exchange box
(171) bottom end of side is fixedly installed with vulcanization gas import III (174), and one end of vulcanization gas import III (174), which is protruded into, to be changed
The inside of hot tank (171) and the top for being located at bottom gas barrier (172), the other end of vulcanization gas import III (174) and dry
The gas outlet on dry tower (11) side top is connected to, and the top of heat exchange box (171) other side is fixedly installed with the outlet of vulcanization gas
III (175), one end that the vulcanization gas exports III (175) protrude into the inside of heat exchange box (171) and are located at top gas barrier (172)
Lower section, it is described vulcanization gas export III (175) the other end be connected to the air inlet on temperature compensation means (18) top, it is described to change
The top of hot tank (171) is fixedly installed with hot-fluid import (176), and heat exchange box (171) are protruded into the bottom end of the hot-fluid import (176)
Inside and be located at the top of top gas barrier (172), the top of the hot-fluid import (176) and haptoreaction device (19) bottom
The gas outlet at end is connected to.
6. a kind of concentrated sulfuric acid according to claim 1 manufactures equipment, it is characterised in that: the temperature compensation means
It (18) include compensation box (181), the inside of the compensation box (181) is fixedly installed with heat exchanger tube (182), the heat exchanger tube
(182) side on compensation box (181) top is stretched out in one end and the one end for exporting III (175) with vulcanization gas is connected to, the heat exchange
The other end for managing (182) stretches out the other side of compensation box (181) bottom end and the air inlet with haptoreaction device (19) side bottom end
Mouth connection, the inner wall of the compensation box (181) are fixedly installed with electrothermal tube (183), and the top of compensation box (181) inner cavity is solid
Dingan County is equipped with temperature sensor (184).
7. a kind of concentrated sulfuric acid according to claim 6 manufactures equipment, it is characterised in that: the temperature sensor
(184) output end is electrically connected with the input terminal of signal processor (23), and the output end and PLC of the signal processor (23) are controlled
The input terminal of device (24) processed is electrically connected, and the output end of the PLC controller (24) is electrically connected with the input terminal of electrothermal tube (183).
8. a kind of concentrated sulfuric acid according to claim 1 manufactures equipment, it is characterised in that: the haptoreaction device
It (19) include contact reaction tower (191), the inner wall of the contact reaction tower (191) is fixedly installed with ring catalyst (192), institute
State ring catalyst (192) quantity set there are four, and four ring catalysts (192) successively equidistant placement from top to bottom, institute
The bottom end for stating contact reaction tower (191) side is fixedly installed with vulcanization gas import IV (193), the vulcanization gas import IV (193)
One end protrude into the inside of contact reaction tower (191) and between third and the 4th ring catalyst (192), the vulcanization
The other end of gas import IV (193) is connected to one end that heat exchanger tube (182) is located at compensation box (181) bottom, the haptoreaction
The top of tower (191) other side is fixedly installed with vulcanization gas circulation pipe (194), and one end of vulcanization gas circulation pipe (194) is stretched
Enter the inside of contact reaction tower (191) and between first and second ring catalyst (192), the vulcanization gas circulation
The other end of pipe (194) is connected to the top of contact reaction tower (191) inner cavity, and the bottom end of the contact reaction tower (191) is fixed
Vulcanization gas is installed and exports IV (195), the bottom end that the vulcanization gas exports IV (195) is connected to one end of hot-fluid import (176).
9. a kind of production process of the concentrated sulfuric acid, which is characterized in that include following process flow:
S1, the appropriate iron sulfide mineral of investment into fluidized bed furnace (1), and it is passed through enough air；
The high temperature sulfur dioxide generated in S2, fluidized bed furnace (1) mixes with air object and impurity particle and recycles by the combustion heat
Device (3), then accelerate gas flow rate by exhaust fan (4), into realizing gas solid separation in cyclone separator (5), it is remaining can not
Isolated gas-solid mixture enters in wash mill (6)；
S3, it is sprayed the dilute sulfuric acid extraction in dilute sulfuric acid collecting tank (8) and by dilute sulfuric acid drawing liquid pump (10) by dilute sulfuric acid spray head (65)
Spill, de-burring dust-fall is carried out to the gas that vulcanization gas import II (63) enters, solid particle polluter is fallen on filter screen (62), is remained
Remaining liquid, which enters in dilute sulfuric acid collecting tank (8), to be recycled, and is mixed with air gas by the sulfur dioxide of purification and impurity removal and is entered
In drying tower (11)；
S4, the concentrated sulfuric acid in concentrated sulfuric acid collecting tank (14) is extracted out by concentrated sulfuric acid drawing liquid pump (16) and is sprayed into drying tower (11),
To the gaseous mixture absorbent drying in drying tower (11), the concentrated sulfuric acid after water suction enters liquid islocation plate (32) by concentrated sulfuric acid entrance (34)
On, and heated by the mixed gas after the burning below liquid islocation plate (32), the moisture in the concentrated sulfuric acid is arranged by steam lead (12)
Enter in dilute sulfuric acid collecting tank (8) out, the concentrated sulfuric acid after distillation is entered in concentrated sulfuric acid collecting tank (14) by concentrated sulfuric acid conduit (13)；
S5, entered in heat-exchanger rig I (17) by the mixed gas of drying tower (11) after dry, then export III (175) from vulcanization gas
Into in heat exchanger tube (182), temperature in electrothermal tube (183) real-time detection compensation box (181) is simultaneously sent out by signal processor (23)
PLC controller (24) analysis processing is given, is made comparisons with preset 500 degrees Celsius, is lower than 500 degrees Celsius, i.e., by PLC controller
(24) starting electrothermal tube (183) is powered and carries out being heated to predetermined temperature to the air in compensation box (181)；
S6, entered in haptoreaction device (19) by the mixed gas that heat exchanger tube (182) come out, mixed gas is by annular catalyst
The catalysed oxidn of agent (192) simultaneously releases big calorimetric, the macromolecular gas of generation from vulcanization gas export IV (195) discharge and from
Hot-fluid import (176) enters in heat exchange gas-guide tube (173), preheats to the mixed gas that vulcanization gas import III (174) enters, by heat
The final sulfur trioxide of outflux (177) discharge enters heat-exchanger rig II (20) with a small amount of sulfur dioxide and air Mixture
It is interior；
S7, the structure of heat-exchanger rig II (20) are identical with heat-exchanger rig I (17), and cold media gas is by new cold air importing pair
Heating agent gas in heat-exchanger rig II (20) carries out cooling；
It is sprayed using the 98.3% industrial concentrated sulfuric acid to sulfur trioxide absorption on top in S8, absorption tower (21)；
Unabsorbed sulfur dioxide is discharged into waste gas absorption case (22) in S9, absorption tower (21), by waste gas absorption case (22)
Ammonium hydroxide absorbs.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910118190.XA CN109850855A (en) | 2019-02-15 | 2019-02-15 | A kind of production process and equipment of the concentrated sulfuric acid |
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| CN201910118190.XA CN109850855A (en) | 2019-02-15 | 2019-02-15 | A kind of production process and equipment of the concentrated sulfuric acid |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113457342A (en) * | 2021-07-01 | 2021-10-01 | 安徽燃博智能科技有限公司 | Waste gas treatment device for hot blast stove |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113457342A (en) * | 2021-07-01 | 2021-10-01 | 安徽燃博智能科技有限公司 | Waste gas treatment device for hot blast stove |
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Application publication date: 20190607 |