CN207511829U - Gas relieving haperacidity energy recycle device - Google Patents
Gas relieving haperacidity energy recycle device Download PDFInfo
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- CN207511829U CN207511829U CN201820453885.4U CN201820453885U CN207511829U CN 207511829 U CN207511829 U CN 207511829U CN 201820453885 U CN201820453885 U CN 201820453885U CN 207511829 U CN207511829 U CN 207511829U
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- evaporator
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- pressure steam
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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Abstract
The utility model discloses a kind of gas relieving haperacidity energy recycle devices, belong to chemical field.The device directly generates low-pressure steam using the outer heat for sulfuric acid, then process gas pipeline before feeding reaction tower, it substitutes section mixer and adds water, reduce the live load of mixer, reduce recycle acid flow, reduce the power consumption of circulating pump, it is often more important that in the case where in addition not consuming energy, low steam（0.15±0.05MPa（g））Heat switch to for high temperature concentrated acid（190±30℃）Heat, and pass through and more higher pressures generated in evaporator（0.8±0.4MPa（g））Low-pressure steam.Can real low-heat recovery system often produce 1 ton of sulfuric acid can be with 0.55 ± 0.1 ton of low-pressure steam of by-product.
Description
Technical field
The utility model is related to chemical fields, and in particular to a kind of relieving haperacidity energy recycle device.
Background technology
Gas washing in SA production industry at present, particularly in ore deposit or metallurgical off-gas acid-making industry, many device SO3By H2O absorbs production
The energy of sulfuric acid reaction is usually taken to by recirculated water in air, is wholly or largely wasted.This technological process does not have not only
It brings benefits, and needs to consume a large amount of recirculated waters.There are partial devices to be provided with low temperature heat reclamation device in dry absorption section,
Technical process is：Process gas containing SO3 enters high temperature absorption tower, is absorbed by spray acid in tower, releases heat, acid temperature
Raising, high temperature concentrated acid send pressurization to be sent into evaporator and generate low-pressure steam, enter mixer after sour temperature drop is low by high temperature circulation pumping
Water is added to reduce sour dense, be then re-fed into high temperature absorption tower cyclic absorption SO3；Device production acid is from the cycle acid tube of evaporator outlet
It picks out, it is outer after feed-water heater and the cooling of desalination water heater to supply, it returns metallurgical off-gas acid-making due to ore deposit and does and inhale low temperature recuperation of heat
System is higher for ratio of the sulfuric acid in recycle acid outside, outer for usually 130 DEG C ~ 160 DEG C of acid temperature, still has partial heat to fail to have
Effect recycling, this part, which sends sulfuric acid outside, can add in the relatively low processing medium of other temperature, it is impossible to generate low-pressure steam, energy regenerating product
Matter is low, and use scope is limited.In this kind of low temperature heat reclamation device, the direct steam generating capacity of low-pressure steam generally often produces 1 ton
0.25 ~ 0.40t of sulphuric acid production low-pressure steam or so still has partial heat and underuses.
Invention content
The utility model is to provide S0 in view of the shortcomings of the prior art3Gas relieving haperacidity energy recycle device.
A kind of relieving haperacidity energy recycle device, the device include reaction tower, evaporator and evaporation oxygen-eliminating device, the reaction tower
Bottom be connected by circulating pump with evaporator, the top that an output terminal of the evaporator passes through mixer and reaction tower
It is connected, another output terminal of the evaporator is connected successively with evaporation oxygen-eliminating device and desalination water preheater, the technique containing SO3
The output channel of gas is connected with the bottom of reaction tower.
In some technical solutions：The output terminal of desalted water is connected by desalination water preheater with evaporation oxygen-eliminating device, described
An output terminal of evaporation oxygen-eliminating device bottom pumped by low pressure feed water and be connected with the input terminal of evaporator, another output terminal leads to
Low pressure feed pump is crossed with mixer to be connected.
In some technical solutions：The output of output terminal and the process gas containing SO3 at the top of the evaporation oxygen-eliminating device
Pipeline is connected.
The beneficial effects of the utility model：
Contain S0 using of the present invention3Gas relieving haperacidity energy recycle device is directly generated using the outer heat for sulfuric acid
Low-pressure steam is then sent into process gas pipeline before reaction tower, substitutes section mixer and adds water, the work for reducing mixer is born
Lotus reduces recycle acid flow, reduces the power consumption of circulating pump, it is often more important that in the case where in addition not consuming energy,
Low steam（0.15±0.05MPa（g））Heat switch to for high temperature concentrated acid（190±30℃）Heat, and pass through in evaporator
Generate more higher pressures（0.8±0.4MPa（g））Low-pressure steam.Can real low-heat recovery system often produce 1 ton of sulfuric acid can
With 0.55 ± 0.1 ton of low-pressure steam of by-product.
Description of the drawings
Fig. 1 is a kind of schematic diagram of gas relieving haperacidity energy recycle device.
Wherein：1 is reaction tower, and 2 be circulating pump, and 3 be evaporator, and 4 be mixer, and 5 pump for low pressure feed water, and 6 remove for evaporation
Oxygen device, 7 be desalination water preheater.
Specific embodiment
The utility model is described further, but the scope of protection of the utility model is not limited to reference to embodiment
This：
Such as Fig. 1：A kind of gas relieving haperacidity energy recycle device, the device include reaction tower（1）, evaporator（3）It is removed with evaporation
Oxygen device（6）, the reaction tower（1）Bottom pass through circulating pump（2）With evaporator（3）It is connected, the evaporator（3）One
A output terminal passes through mixer（4）With reaction tower（1）Top be connected, the evaporator（3）Another output terminal successively
With evaporating oxygen-eliminating device（6）With desalination water preheater（7）It is connected, the output channel and reaction tower of the process gas containing SO3（1）Bottom
Portion is connected.
In some technical solutions：The output terminal of desalted water passes through desalination water preheater（7）With evaporating oxygen-eliminating device（6）Phase
Even, the evaporation oxygen-eliminating device（6）One output terminal of bottom is pumped by low pressure feed water（5）With evaporator（3）Input terminal phase
Even, another output terminal is pumped by low pressure feed water（5）With mixer（4）It is connected.
In some technical solutions：The evaporation oxygen-eliminating device（6）The output terminal at top is defeated with the process gas containing SO3
Go out pipeline to be connected.
Embodiment 1：
Process gas containing SO3 is into reaction tower（1）Before, first with evaporating oxygen-eliminating device（6）The low low-pressure steam generated
（0.15±0.05MPa（g））It mixes, partly or entirely SO3 reacts generation H with low low-pressure steam in process gas2SO4, into anti-
Answer tower（1）The reaction was continued with the recycle acid under the spray of top for process gas afterwards, and reaction generates 210 ± 10 DEG C of high-temperature sulfuric acid in tower
Bottom converge after through circulating pump（2）Evaporator is sent into after pressurization（3）Generate the low-pressure steam of 0.8 ± 0.4MPa, tail gas after reaction
Subsequent processing is sent to handle.High-temperature sulfuric acid goes out evaporator（3）It is most of afterwards to enter mixer（4）, with low pressure feed water reduce acid it is dense after
Enter back into reaction tower（1）SO3 in cyclic absorption process gas, another part sulfuric acid is from evaporator outlet recycle acid pipeline
It picks out, is introduced into evaporation oxygen-eliminating device（6）Thermal de-aeration simultaneously generates low low-pressure steam（（0.15±0.05MPa（g））, finally enter
Desalination water preheater preheats room temperature desalted water, and sulfuric acid send downstream process to handle after cooling.The room temperature desalted water that the external world is sent into, first
In desalination water preheater（7）In be heated to 120 ± 15 DEG C, be re-fed into evaporation oxygen-eliminating device（6）, 130 ± 10 DEG C are heated to, heating power removes
Oxygen generates low low-pressure steam simultaneously, and low-pressure steam send reaction tower（1）Import is reacted with the SO3 in process gas, evaporates oxygen-eliminating device
（6）In deaerated water pumped through low pressure feed water（5）After pressurization, a part send mixer（4）Cycle acid concentration is reduced, another part is sent
Evaporator generates the low-pressure steam of 0.8 ± 0.4MPa.
Claims (3)
1. a kind of gas relieving haperacidity energy recycle device, it is characterised in that：The device includes reaction tower（1）, evaporator（3）And evaporation
Oxygen-eliminating device（6）, the reaction tower（1）Bottom pass through circulating pump（2）With evaporator（3）It is connected, the evaporator（3）'s
One output terminal passes through mixer（4）With reaction tower（1）Top be connected, the evaporator（3）Another output terminal according to
Secondary and evaporation oxygen-eliminating device（6）With desalination water preheater（7）It is connected, the output channel and reaction tower of the process gas containing SO3（1）'s
Bottom is connected.
2. gas relieving haperacidity energy recycle device according to claim 1, it is characterised in that：The output terminal of desalted water passes through de-
Brine preheater（7）With evaporating oxygen-eliminating device（6）It is connected, the evaporation oxygen-eliminating device（6）One output terminal of bottom passes through low pressure
Feed pump（5）With evaporator（3）Input terminal be connected, another output terminal is pumped by low pressure feed water（5）With mixer（4）Phase
Even.
3. gas relieving haperacidity energy recycle device according to claim 1, it is characterised in that：The evaporation oxygen-eliminating device（6）
The output terminal at top is connected with the output channel of the process gas containing SO3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820453885.4U CN207511829U (en) | 2018-04-02 | 2018-04-02 | Gas relieving haperacidity energy recycle device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820453885.4U CN207511829U (en) | 2018-04-02 | 2018-04-02 | Gas relieving haperacidity energy recycle device |
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| Publication Number | Publication Date |
|---|---|
| CN207511829U true CN207511829U (en) | 2018-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820453885.4U Active CN207511829U (en) | 2018-04-02 | 2018-04-02 | Gas relieving haperacidity energy recycle device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019192173A1 (en) * | 2018-04-02 | 2019-10-10 | 南京海陆化工科技有限公司 | Acid generation energy recovery device and method for so3-containing gas |
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2018
- 2018-04-02 CN CN201820453885.4U patent/CN207511829U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019192173A1 (en) * | 2018-04-02 | 2019-10-10 | 南京海陆化工科技有限公司 | Acid generation energy recovery device and method for so3-containing gas |
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