CN207861893U - One kind is novel to pass through SO3The system that absorption process prepares AR grades of sulfuric acid - Google Patents
One kind is novel to pass through SO3The system that absorption process prepares AR grades of sulfuric acid Download PDFInfo
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- CN207861893U CN207861893U CN201721813921.5U CN201721813921U CN207861893U CN 207861893 U CN207861893 U CN 207861893U CN 201721813921 U CN201721813921 U CN 201721813921U CN 207861893 U CN207861893 U CN 207861893U
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Abstract
Novel pass through SO the utility model is related to a kind of3The system that absorption process prepares AR grades of sulfuric acid, including two parts, first, high-purity SO3Gas produces part and high-purity SO3Absorption part then obtain high-purity SO through niacin evaporator again wherein produce part is delivered to flue gas niacin tower circulating slot after niacin tower3Gas, then high-purity SO3Gas, which enters, absorbs part, refined sour circulating slot is delivered to after refined acid absorption column absorbs, sulfuric acid is sprayed through refining an acid circulating pump part and being pumped at the top of refined acid absorption column in the refined sour circulating slot, another part is pumped into finished product and refines acid tank, and is pumped into refined acid storage tank by refined sour delivery pump after finished product therein refines acid cooler cooling.Entire production process three wastes generate, and all raw material and intermediate product realization recycle, and introducing impurity is few, and the steam generated in production process is also fully used, and preparation efficiency is improved, and is effectively reduced cost.
Description
Technical field
It is specifically a kind of novel to pass through SO the utility model is related to AR grades of sulfuric acid preparation facilities fields3Absorption process prepares AR
The system of grade sulfuric acid.
Background technology
The production technology of AR grades of sulfuric acid is divided into 2 kinds at present, and one is industrial sulphuric acid rectification methods；One is SO3Absorption process.Essence
The method of evaporating typically use 98.3% industrial sulphuric acid be used as be raw material, by pretreatment tank be added permanganate pretreatment after, it is defeated
Enter and heat distilation into the glass device of quartzy rectifying column, is filtered by filter after being cooled down using condenser
Obtain analytical pure sulfuric acid.This method is the process that industrial sulphuric acid is further purified.By the industrial sulphuric acid of not engler distillation,
Purity can reach GB/T 625-2007《Chemical reagent sulfuric acid》Pure grade specification is analyzed, top pure grade specification sulphur can be obtained in highest
Acid, heat source required for distillating method is mainly electric energy, and part is using fire coal.The process energy consumption is big, and three waste discharge is serious.
Rectifying is divided into as two kinds of atmospheric distillation and rectification under vacuum, and the temperature of atmospheric distillation is generally up to 330 DEG C, device material
It is more demanding, generally use expensive quartz glass；The temperature of rectification under vacuum is generally 175~190 DEG C, and pressure is
1.33~2.67kPa generally uses Pyrex and fluoropolymer material.It is limited by equipment, the energy, rectification method is only applicable to
Small-scale production.
SO3Absorption process is with pure gas SO3For raw material, it is sent to analytical pure sulfuric acid absorption tower, with 98% analytical pure sulfuric acid
As cyclic absorption agent, and addition ultra-pure water is dense to balance sulfuric acid acid into system, and part cycle does absorbent, another part
By sulfur dioxide desorption tower, the sulfur dioxide being dissolved in sulfuric acid is desorbed with filtered air just can obtain analysis bright sulfur
Acid.SO3Absorption process production refined sulfuric acid is that the stringent intake for controlling impurity in former, auxiliary material and production process is main means,
Existing equipment technical process control material result is undesirable, and introducing impurity is more, the steam utilization generated in production process
It is not high.
Utility model content
Novel pass through SO the technical problem to be solved by the utility model is to provide a kind of3Absorption process prepares AR grades of sulfuric acid
System, to solve defect existing in the prior art.
The technical solution that the utility model solves above-mentioned technical problem is as follows：
One kind is novel to pass through SO3The system that absorption process prepares AR grades of sulfuric acid, including smoke inlet (1) and cigarette connected to it
Acid tower (2), a flue gas part enter niacin tower (2) through smoke inlet (1), and another part is exported through pipeline to niacin tower
(3), after being mixed into niacin tower (2) interior flue gas with 30% niacin that niacin tower (2) top sprays, flue gas passes through tower top niacin
Tower exports (3) discharge, and tower is inhaled in niacin tower outlet (3) connection one；Niacin tower (2) bottom is connected to niacin tower circulating slot (4), institute
The niacin part stated in niacin tower circulating slot (4) is delivered to after niacin tower circulating pump (5) is pumped into niacin tower cooler device (6)
Niacin tower (2), a part are pumped into niacin evaporator (8) through niacin tower circulating pump (5), and the niacin evaporator (8) is steamed with low pressure
Vapour entrance (18) is connected to, and after low-pressure steam evaporates niacin, is delivered to refined acid absorption column (9), remaining niacin is cold through niacin tower
But it is delivered to niacin tower (2) after device (6) cooling, the SO into refined acid absorption column (9)398% essence of gas and top spray
It is absorbed after Sulphuric acid mixing, tail gas absorbs SO through pipeline to drying tower import (17)3The sulfuric acid of gas is through pipeline
Extremely refined sour circulating slot (10), the refined sour circulating slot (10) are also connected to ultrapure water equipment (16), are used for water inlet (20)
Water warfare after be delivered to refined sour circulating slot (10), the raised refined sulfuric acid concentration of concentration is maintained 98%, refined acid follows
Refined acid cooler (11) is additionally provided in annular groove (10) for cooling, described refined sour circulating slot (10) interior sulfuric acid is through essence
Relieving haperacidity circulating pump (12) part, which is pumped at the top of refined acid absorption column (9), to be sprayed, and another part is pumped into finished product and refines acid tank
(13), refined acid storage tank and after finished product therein refines acid cooler (14) cooling is pumped by refined sour delivery pump (15)
(21)；
Further, niacin tower circulating slot (4) connection adjusts sulfuric acid entrance (22), for keeping Nicotinic steady
It is fixed；
Further, it is provided with niacin Intermediate Heat Exchanger between the niacin tower circulating slot (4) and niacin evaporator (8)
(7), it is used to preheat niacin；
Further, refined acid absorption column (9) outlet contains micro SO3Tail gas enters to the drying of sulphuric acid plant
Tower import (17), it is ensured that non-exhaust emission.
Further, the niacin tower cooler device (6), refined acid cooler (11), finished product refine acid cooler (14) and lead to
It crosses water-cooling pattern to cool down, water inlet is connect with recirculated water admission port (23), and water outlet connects with recirculated water water return outlet (24)
It is logical；
The utility model has the beneficial effects that：Entire production process three wastes generate, and all raw material and intermediate product are real
It now recycles, introducing impurity is few, and the steam generated in production process is also fully used, and improves preparation efficiency, effectively
Reduce cost.
Description of the drawings
FIG. 1 is a schematic structural view of the utility model；
In attached drawing, parts list represented by the reference numerals are as follows：
1, smoke inlet, 2, niacin tower, 3, the outlet of niacin tower, 4, niacin tower circulating slot, 5, niacin tower circulating pump, 6, niacin
Tower cooler device, 7, niacin Intermediate Heat Exchanger, 8, niacin evaporator, 9, refined acid absorption column, 10, refined sour circulating slot, 11, refined
Acid cooler, 12, refined acid circulating pump, 13, finished product refine acid tank, 14, finished product refine acid cooler, 15, refined acid conveying
Pump, 16, ultrapure water equipment, 17, drying tower import, 18, low-pressure steam inlet, 19, condensation-water drain, 20, water inlet, 21, essence
Relieving haperacidity storage tank, 22, adjust sulfuric acid entrance, 23, recirculated water admission port, 24, recirculated water water return outlet.
Specific implementation mode
The principles of the present invention and feature are described below in conjunction with attached drawing, example is served only for explaining this practicality
It is novel, it is not intended to limit the scope of the utility model.
As shown in Figure 1, one kind is novel to pass through SO3The system that absorption process prepares AR grades of sulfuric acid, including smoke inlet (1) and with
Its niacin tower (2) connected, a flue gas part enter niacin tower (2) through smoke inlet (1), and another part is through pipeline to cigarette
Acid tower exports (3), and after being mixed into niacin tower (2) interior flue gas with 30% niacin that niacin tower (2) top sprays, flue gas passes through tower
Niacin tower outlet (3) discharge is pushed up, tower is inhaled in niacin tower outlet (3) connection one；Niacin tower (2) bottom is connected to niacin tower cycle
Slot (4), the niacin part in the niacin tower circulating slot (4) is after niacin tower circulating pump (5) is pumped into niacin tower cooler device (6)
Be delivered to niacin tower (2), a part is pumped into niacin evaporator (8) through niacin tower circulating pump (5), the niacin evaporator (8) with
Low-pressure steam inlet (18) is connected to, and after low-pressure steam evaporates niacin, is delivered to refined acid absorption column (9), remaining niacin is through cigarette
It is delivered to niacin tower (2) after acid tower cooler (6) cooling, the SO into refined acid absorption column (9)3Gas and top spray
It is absorbed after the mixing of 98% refined sulfuric acid, tail gas absorbs SO through pipeline to drying tower import (17)3The sulfuric acid of gas passes through
Pipeline to refined sour circulating slot (10), the refined sour circulating slot (10) is also connected to ultrapure water equipment (16), is used for water
It is delivered to refined sour circulating slot (10) after the Water warfare of entrance (20), the raised refined sulfuric acid concentration of concentration is maintained 98%,
Refined acid cooler (11) is additionally provided in refined acid circulating slot (10) for cooling, in the refined sour circulating slot (10)
Sulfuric acid is sprayed through refining acid circulating pump (12) part and being pumped at the top of refined acid absorption column (9), and another part is pumped into finished product
Refined acid tank (13), and through finished product therein refine acid cooler (14) it is cooling after be pumped by refined sour delivery pump (15) it is refined
Acid storage tank (21)；
Further, niacin tower circulating slot (4) connection adjusts sulfuric acid entrance (22), for keeping Nicotinic steady
It is fixed；
Further, it is provided with niacin Intermediate Heat Exchanger between the niacin tower circulating slot (4) and niacin evaporator (8)
(7), it is used to preheat niacin；
Further, refined acid absorption column (9) outlet contains micro SO3Tail gas enters to the drying of sulphuric acid plant
Tower import (17), it is ensured that non-exhaust emission.
Further, the niacin tower cooler device (6), refined acid cooler (11), finished product refine acid cooler (14) and lead to
It crosses water-cooling pattern to cool down, water inlet is connect with recirculated water admission port (23), and water outlet connects with recirculated water water return outlet (24)
It is logical；
SO3Absorption process technological process：Refined sulfuric acid production technology mainly consists of two parts, i.e. high-purity SO3The system of gas
It takes and high-purity SO3Absorption.Concrete structure refers to Fig. 1；
1, high-purity SO3Gas is produced：
Flue gas from three sections of outlets of converter is cooled to 210 DEG C of parts by heat exchanger heat exchange and enters niacin tower, separately
Part bypass to niacin tower exports.The flue gas entered from niacin tower lower part passes through with 30% niacin sprayed from tower top
Inversely contact sponges part SO in flue gas to packing layer3It is come out afterwards by tower top and enters a suction after converging with the flue gas of partial bypass
Tower so that the remaining SO in flue gas3Continue to be predominantly absorbed.
Absorb part SO in partial fume3Nicotinic flow to niacin tower bottom and flows into niacin tower through pipeline again after increasing
Circulating slot.In order to maintain the dense stabilization of acid of the niacin circulatory system, then need to seal in the 98% of dry absorption section into niacin tower circulating slot
Sulfuric acid controls to be adjusted.The niacin overwhelming majority in slot is delivered to by the niacin tower circulating pump being placed on niacin tower circulating slot
Again to the acid trap entrance of niacin top of tower after the cooling of niacin tower cooler device；Rest part (increasing) then enters among niacin
It is entered back into niacin evaporator after heat exchanger preheating.
30% niacin into niacin evaporator is heated by 0.8MPa (G) low-pressure steam, is dissolved in niacin and is partly dissociated
SO3 becomes SO3Gas is sent out at the top of niacin evaporator.Higher 20% niacin of temperature come out from niacin base of evaporator is then
Into the heating of niacin Intermediate Heat Exchanger into 30% niacin of niacin evaporator, niacin tower circulating pump slot is again returned to after cooling
It is interior.
2, high-purity SO3The absorption of gas：
The high-purity SO come from niacin evaporator top exit3Gas, which enters, refines acid absorption column lower part, and from tower top
98% refined sulfuric acid sprayed is inversely contacted by packing layer, SO3The refined sulfuric acid almost recycled fully absorbs, tail gas
Drying tower import is led at the top of from refined acid absorption column.
Absorb SO3Refined sulfuric acid concentration increase after flow to refined acid absorption column bottom and flow into refined acid using pipeline
In circulating slot.In order to maintain the acid of refined acid circulation system dense, then need to heat ultra-pure water into refined sour circulating slot to be adjusted
Section control.Since refined acid absorbs SO3And ultra-pure water, which is added, can make sour temperature increase, therefore setting in refined sour circulating slot
Refined acid cooler may make the temperature of recycle acid be down to tower absorb needed for temperature.Acid circulating pump is refined by the essence in slot
Relieving haperacidity is largely delivered to the acid trap entrance on refined acid absorption column top, and the refined acid of fraction (increasing) then enters finished product
In refined acid tank, and by the finished product in slot refine be delivered to again with refined acid delivery pump after acid cooler is cooled to 40 DEG C it is refined
Acid storage tank.
Using the novel system, have the following advantages that：
1, scheme is that progress technological transformation is increased on existing metallurgical off-gas acid-making device basic, and keeps as far as possible original-pack
It sets and does not do too big variation, to reduce construction investment.It now will be brief but comprehensive as follows the characteristics of the technical program：
2, using " SO3The production scale for the refined sulfuric acid that absorption process " production technology is produced is larger, and product index compared with
Height can reach GB/T 625-2007《Chemical reagent sulfuric acid》The middle pure grade requirement of analysis；
3, low energy consumption.Using " SO3Absorption process " mainly increases the steam supply of external heat source (low-pressure saturated steam).
Due to sulphuric acid plant byproduct steam itself, so there is no need to be additionally provided.
4, it is discharged without " three wastes ".SO of the raw material in flue gas after one turn3, the equipment and pipeline of whole system are all closed
's.Flue gas after niacin tower absorbs goes successively to be absorbed in a suction tower, and refined acid absorption column absorbs SO3Tail gas afterwards is again
Back to drying tower import.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all in this practicality
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (5)
1. one kind is novel to pass through SO3The system that absorption process prepares AR grades of sulfuric acid, it is characterised in that：Including smoke inlet (1) and and its
The niacin tower (2) of connection, a flue gas part enter niacin tower (2) through smoke inlet (1), and another part is through pipeline to niacin
Tower exports (3), and after being mixed into niacin tower (2) interior flue gas with 30% niacin that niacin tower (2) top sprays, flue gas passes through tower top
Niacin tower exports (3) discharge, and tower is inhaled in niacin tower outlet (3) connection one；Niacin tower (2) bottom is connected to niacin tower circulating slot
(4), the niacin part in the niacin tower circulating slot (4) is defeated after niacin tower circulating pump (5) is pumped into niacin tower cooler device (6)
Send to niacin tower (2), a part is pumped into niacin evaporator (8) through niacin tower circulating pump (5), the niacin evaporator (8) with it is low
Steam inlet (18) connection is pressed, after low-pressure steam evaporates niacin, is delivered to refined acid absorption column (9), remaining niacin is through niacin
It is delivered to niacin tower (2) after tower cooler device (6) cooling, the SO into refined acid absorption column (9)3Gas and top spray
It is absorbed after the mixing of 98% refined sulfuric acid, tail gas absorbs SO through pipeline to drying tower import (17)3The sulfuric acid of gas is through pipe
Road is delivered to refined sour circulating slot (10), and the refined sour circulating slot (10) is also connected to ultrapure water equipment (16), for entering water
It is delivered to refined sour circulating slot (10) after the Water warfare of mouth (20), the raised refined sulfuric acid concentration of concentration is maintained 98%, essence
It is additionally provided with refined acid cooler (11) in relieving haperacidity circulating slot (10) to be used to cool, described refined sour circulating slot (10) interior sulphur
Acid is sprayed through refining acid circulating pump (12) part and being pumped at the top of refined acid absorption column (9), and another part is pumped into finished product essence
Relieving haperacidity slot (13), and refined acid is pumped by refined sour delivery pump (15) after finished product therein refines acid cooler (14) cooling
Storage tank (21).
2. one kind according to claim 1 is novel to pass through SO3The system that absorption process prepares AR grades of sulfuric acid, it is characterised in that：Institute
It states niacin tower circulating slot (4) connection and adjusts sulfuric acid entrance (22), for keeping Nicotinic to stablize.
3. one kind according to claim 2 is novel to pass through SO3The system that absorption process prepares AR grades of sulfuric acid, it is characterised in that：Institute
It states and is provided with niacin Intermediate Heat Exchanger (7) between niacin tower circulating slot (4) and niacin evaporator (8), for being preheated to niacin.
4. one kind according to claim 3 is novel to pass through SO3The system that absorption process prepares AR grades of sulfuric acid, it is characterised in that：Institute
It states refined acid absorption column (9) outlet and contains micro SO3Tail gas enters to the drying tower import (17) of sulphuric acid plant, it is ensured that without useless
Gas discharges.
5. passing through SO according to claim 1-4 any one of them one kind is novel3The system that absorption process prepares AR grades of sulfuric acid, it is special
Sign is：The niacin tower cooler device (6), refined acid cooler (11), finished product refine acid cooler (14) and pass through water-cooling pattern
Cool down, water inlet is connect with recirculated water admission port (23), and water outlet is connected to recirculated water water return outlet (24).
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| CN201721813921.5U CN207861893U (en) | 2017-12-22 | 2017-12-22 | One kind is novel to pass through SO3The system that absorption process prepares AR grades of sulfuric acid |
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| CN201721813921.5U CN207861893U (en) | 2017-12-22 | 2017-12-22 | One kind is novel to pass through SO3The system that absorption process prepares AR grades of sulfuric acid |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109437122A (en) * | 2018-11-29 | 2019-03-08 | 李晓垚 | A kind of purification acid production process |
| CN109879255A (en) * | 2019-04-27 | 2019-06-14 | 招远市招金金合科技有限公司 | A kind of system and method for pyrite-based sulfuric acid production system production refined sulfuric acid |
| CN111908432A (en) * | 2020-09-09 | 2020-11-10 | 江苏庆峰工程集团有限公司 | Production method and production device for refining 98% sulfuric acid for electronic industry |
| CN112850657A (en) * | 2021-02-06 | 2021-05-28 | 岷山环能高科股份公司 | Flue gas separation and purification system for producing electronic-grade sulfuric acid |
-
2017
- 2017-12-22 CN CN201721813921.5U patent/CN207861893U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109437122A (en) * | 2018-11-29 | 2019-03-08 | 李晓垚 | A kind of purification acid production process |
| CN109437122B (en) * | 2018-11-29 | 2020-05-22 | 联仕(昆山)化学材料有限公司 | Refined acid production process |
| CN109879255A (en) * | 2019-04-27 | 2019-06-14 | 招远市招金金合科技有限公司 | A kind of system and method for pyrite-based sulfuric acid production system production refined sulfuric acid |
| CN111908432A (en) * | 2020-09-09 | 2020-11-10 | 江苏庆峰工程集团有限公司 | Production method and production device for refining 98% sulfuric acid for electronic industry |
| CN112850657A (en) * | 2021-02-06 | 2021-05-28 | 岷山环能高科股份公司 | Flue gas separation and purification system for producing electronic-grade sulfuric acid |
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