CN203200051U - Device for separating and recycling iron salt and hydrochloric acid in hydrochloric acid pickling waste liquid - Google Patents
Device for separating and recycling iron salt and hydrochloric acid in hydrochloric acid pickling waste liquid Download PDFInfo
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- CN203200051U CN203200051U CN 201320204790 CN201320204790U CN203200051U CN 203200051 U CN203200051 U CN 203200051U CN 201320204790 CN201320204790 CN 201320204790 CN 201320204790 U CN201320204790 U CN 201320204790U CN 203200051 U CN203200051 U CN 203200051U
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- hydrochloric acid
- pickling waste
- acid pickling
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- waste liquid
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Abstract
The utility model relates to a device for separating and recycling iron salt and hydrochloric acid in hydrochloric acid pickling waste liquid. The device comprises a waste storage tank, wherein the waste storage tank is connected with a heat exchanger through a pressure pump and connected with a spray head extending into a dryer through a pipeline; an air inlet at the upper part of the dryer is connected with a heater; the bottom of the heater is connected with a first air filter through an air blower; the upward side of the spray head is connected with a second air filter through an air blower; the lower part of the dryer is connected with a cyclone separator; the cyclone separator is connected with the heat exchanger through an induced draft fan; and a hydrochloric acid gas containing water vapor, separated from the heat exchanger, is connected with a falling film absorption tower through a water vapor removal device. The device provided by the utility model preheats the hydrochloric acid pickling waste liquid, mixes the hydrochloric acid pickling waste liquid with compressed air, performs Laval spray and then mixes the hydrochloric acid pickling waste liquid with hot air, thereby realizing separation of HCL from iron salt; and the HCL gas is separated before removal of partial moisture and falling film absorption and recovery, and then goes back into new pickling liquid again to effectively reduce environmental pollution and realize recycling of iron resources and hydrochloric acid.
Description
Technical field
The utility model belongs to hydrochloric acid pickling waste liquor molysite resource utilization and spent acid recycling field in the Iron And Steel Industry.Be particularly related to molysite resource utilization and the device of the daraf(reciprocal of farad) that injection that utilizes waste heat with the concentrated refine and reclaim of spent acid.
Background technology
Spent pickle liquor has sulfuric acid, hydrochloric acid and nitrate acid and hydrofluoric acid spent pickle liquor in the Iron And Steel Industry.Sulfuric acid pickling waste liquid mainly consists of the following composition: H
2The O massfraction is 73%, FeSO
4Massfraction is 17%～23%, H
2SO
4Massfraction is 5%～10%; The composition of hydrochloric acid pickling waste liquor mainly is hydrogenchloride, iron protochloride and water etc., and general chloride containing is ferrous, the hydrogenchloride massfraction is respectively 10%～14%, 3%～4%; The nitrate acid and hydrofluoric acid spent pickle liquor is the pickle solution that production stainless steel plant man produces, and general nitric acid, HF massfraction are respectively 7%～15%, 3%～6%, Fe
2+Mass concentration is 20～40mol/L, contains in addition a small amount of chromium, nickel etc.The every production of domestic Iron And Steel Industry 1t steel approximately produce the 60kg spent pickle liquor, nearly 1,000,000 m of annual spent pickle liquor quantity discharged
3Use chlorohydric acid pickling technique in China many iron and steel process unit at present, this part spent acid not yet is fully used at present.Each state all manages it as Hazardous wastes, it is listed in " conservation of resources and regeneration bill " such as the U.S., and China lists the spent acid of pH≤2 in " national Hazardous Waste List ".The a large amount of acid and the iron resources that contain recoverable in the iron and steel pickling waste liquid, directly discharging or emit through preliminary treatment not only causes the pollution of serious soil and water but also the waste that produces resource.Processing for pickling waste waters in the Iron And Steel Industry has been extremely urgent problem needing to overcome.The expense of not only processing as Hazardous wastes is very high, and can cause the waste of resource and the pollution of environment.
Summary of the invention
Goal of the invention
The utility model relates to a kind of hydrochloric acid pickling waste liquor molysite and hydrochloric acid Separation and Recovery re-use device, its objective is based on spraying purification techniques, overcome prior art and be applied in hydrochloric acid pickling waste liquor molysite and hydrochloric acid resource utilization and reclaim and the deficiency of utilizing, carry out method that molysite separates with hydrochloric acid and contain concentrating, recycling and reusing of acid gas.
Technical scheme
A kind of hydrochloric acid pickling waste liquor molysite and hydrochloric acid Separation and Recovery re-use device, comprise the waste material storage tank, it is characterized in that: the waste material storage tank connects interchanger by force (forcing) pump, and connect by pipeline and to stretch into splash head in the moisture eliminator, moisture eliminator top blast inlet is connected with well heater, heater base connects the 1# air filter by gas blower, the splash head top connects the 2# air filter by gas blower, the moisture eliminator bottom connects cyclonic separator, cyclonic separator connects interchanger by induced draft fan, and the steam-laden hydrochloric acid gas after separating from interchanger connects film-falling absorption tower by the water vapour removal device.
That this device all devices is is high temperature resistant, the Stainless steel 316 L material of acidproof gas corrosion.
Splash head adopts air-flowing type to spray.
Moisture eliminator adopts the warm air side rotary to flow to wind, atomizing of liquids adopts the mode that is total to streaming to mix with warm air.
Film-falling absorption tower adopts the graphite falling film absorption.
Advantage and effect
Advantage of the present utility model and positively effect are as follows:
The at present domestic product C a (OH) that adopts lime, carbide slag or lime slaking reaction more
2Neutralize, although the pH value can reach requirement after the neutralization, but all the other indices can not be up to standard, and the body refuse that produces dehydration difficulty, be difficult for dry, post-processing difficulty is large, most of situation is that accumulation is pending, taken a large amount of soils, caused secondary pollution, the method has been wasted a large amount of acid and iron resources simultaneously.
The utility model takes full advantage of the waste heat of iron and steel and processing enterprise thereof, make the rate of recovery of the spent acid of iron and steel and processing enterprise thereof reach 90%, the mass concentration of molysite is greater than 10 g/L in the recovered acid, chlorine ion concentration is not more than 600 mg/L in the discharge water, reduced the pollution to environment, realize recovery and the utilization of iron resources and hydrochloric acid, for iron and steel and processing enterprise thereof realize that recycling economy finds an effective approach, applied the generation active influence to what promote the acid solution recovery technology.
Description of drawings
Fig. 1 is the utility model structural representation.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further:
The utility model proposes a kind of hydrochloric acid pickling waste liquor molysite and hydrochloric acid Separation and Recovery re-use device, as shown in fig. 1, comprise waste material storage tank 1, it is characterized in that: waste material storage tank 1 connects interchanger 3 by force (forcing) pump 2, waste material storage tank 1 connects the splash head that stretches in the moisture eliminator 4 by pipeline, moisture eliminator 4 top blast inlets are connected with well heater 8, well heater 8 bottoms connect 1# air filter 9-1 by gas blower 7, the splash head top connects 2# air filter 9-2 by gas blower 7, moisture eliminator 4 bottoms connect cyclonic separator 5, cyclonic separator 5 connects interchanger 3 by induced draft fan 6, and the steam-laden hydrochloric acid gas 10 after separating from interchanger 3 connects film-falling absorption tower 12 by water vapour removal device 11.
That this device all devices is is high temperature resistant, the Stainless steel 316 L material of acidproof gas corrosion.
Splash head 13 at moisture eliminator 4 internal upper parts adopts air-flowing type to spray.
Moisture eliminator 4 adopts the warm air side rotary to flow to wind, atomizing of liquids adopts the mode that is total to streaming to mix with warm air.
Film-falling absorption tower 12 adopts the graphite falling film absorption.
Warm air beating adopts the method for steel industry preheating in the utility model.And the utility model is based on the UTILIZATION OF VESIDUAL HEAT IN technology; The recovery of acid solution needs certain heat, and iron and steel and processing enterprise thereof itself have abundant residual heat resources.By the utilization of waste heat, can reduce construction and the running cost of acid solution recovery system, have practical significance and the exemplary role of energy-saving and emission-reduction.
In the water vapour removal device 11, water and mixed in hydrochloric acid gas purification adopt cryogenic condensation Methods For Purification hydrochloric acid gas, Separation of Water steam.
High temperature contains acid gas and the interchangeable thermal center energy of hydrochloric acid pickling waste liquor.
Working process of the present utility model is as follows:
The spent pickle liquor that the chlorohydric acid pickling line produces is collected and is entered waste material storage tank 1, by force (forcing) pump 2 spent acid (after interchanger 3 preheatings) is delivered to the splash head 13 in the moisture eliminator 4, enter and mix afterwards with gas blower 7 pressurized air before the splash head 13 that the splash head 13 in moisture eliminator 4 atomizes, drop after the atomizing in moisture eliminator 4 with from gas blower 7 and carry out after the air mixed after the air heating to 170 ℃ dry through well heater 8, dried acid gas and molysite particle carry out the gravity type boat davit primary separation in moisture eliminator 4, iron content salt particle gas after the primary separation enters cyclonic separator 5 laggard promoting the circulation of qi with induced draft fan 6 air inducing to be separated admittedly, isolate molysite and contain acid gas, contain and carry out the molysite recycling after acid gas enters interchanger 3 and former hydrochloride waste heat exchange.After the steam-laden hydrochloric acid gas after the heat exchange is through moisture removal device 11, water vapour in the mixed gas is absorbed, the hydrochloric acid gas that contains a small amount of water vapor after the absorption enters and carries out falling film absorption in the film-falling absorption tower 12, and the aqueous hydrochloric acid after the absorption is recycled.
Claims (4)
1. a hydrochloric acid pickling waste liquor molysite and hydrochloric acid Separation and Recovery re-use device, comprise waste material storage tank (1), it is characterized in that: waste material storage tank (1) connects interchanger (3) by force (forcing) pump (2), and connect by pipeline and to stretch into splash head in the moisture eliminator (4), moisture eliminator (4) top blast inlet is connected with well heater (8), well heater (8) bottom connects 1# air filter (9-1) by gas blower (7), the splash head top connects 2# air filter (9-2) by gas blower (7), moisture eliminator (4) bottom connects cyclonic separator (5), cyclonic separator (5) connects interchanger (3) by induced draft fan (6), and the steam-laden hydrochloric acid gas after separating from interchanger (3) connects film-falling absorption tower (12) by water vapour removal device (11).
2. hydrochloric acid pickling waste liquor molysite according to claim 1 and hydrochloric acid Separation and Recovery re-use device is characterized in that: the injection of splash head employing air-flowing type.
3. hydrochloric acid pickling waste liquor molysite according to claim 1 and hydrochloric acid Separation and Recovery re-use device is characterized in that: moisture eliminator (4) adopts the warm air side rotary to flow to wind, atomizing of liquids adopts the mode of common streaming to mix with warm air.
4. hydrochloric acid pickling waste liquor molysite according to claim 1 and hydrochloric acid Separation and Recovery re-use device is characterized in that: film-falling absorption tower employing graphite falling film absorption.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320204790 CN203200051U (en) | 2013-04-22 | 2013-04-22 | Device for separating and recycling iron salt and hydrochloric acid in hydrochloric acid pickling waste liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320204790 CN203200051U (en) | 2013-04-22 | 2013-04-22 | Device for separating and recycling iron salt and hydrochloric acid in hydrochloric acid pickling waste liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203200051U true CN203200051U (en) | 2013-09-18 |
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ID=49144181
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320204790 Expired - Lifetime CN203200051U (en) | 2013-04-22 | 2013-04-22 | Device for separating and recycling iron salt and hydrochloric acid in hydrochloric acid pickling waste liquid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203200051U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103214050A (en) * | 2013-04-22 | 2013-07-24 | 沈阳华泰科鉴环保设备有限公司 | Device and method of separating and recycling hydrochloric acid pickling waste liquid ferric salt and hydrochloric acid |
| CN104649335A (en) * | 2013-11-21 | 2015-05-27 | 张家港市骏马钢帘线有限公司 | Method and device for recycling ferrous chloride crystal and hydrochloric acid from chlorohydric acid pickling waste solution |
| CN107879518A (en) * | 2017-12-15 | 2018-04-06 | 周鼎力 | A kind of purification apparatus of drag-out |
-
2013
- 2013-04-22 CN CN 201320204790 patent/CN203200051U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103214050A (en) * | 2013-04-22 | 2013-07-24 | 沈阳华泰科鉴环保设备有限公司 | Device and method of separating and recycling hydrochloric acid pickling waste liquid ferric salt and hydrochloric acid |
| CN104649335A (en) * | 2013-11-21 | 2015-05-27 | 张家港市骏马钢帘线有限公司 | Method and device for recycling ferrous chloride crystal and hydrochloric acid from chlorohydric acid pickling waste solution |
| CN104649335B (en) * | 2013-11-21 | 2016-08-17 | 张家港市骏马钢帘线有限公司 | Ferrous chloride crystal and the method and device of hydrochloric acid is reclaimed from hydrochloric acid pickling waste liquor |
| CN107879518A (en) * | 2017-12-15 | 2018-04-06 | 周鼎力 | A kind of purification apparatus of drag-out |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160426 Address after: Wanliutang road in Shenhe District of Shenyang City, Liaoning province 110000 room 126 No. 36-1 Patentee after: Shenyang Huatai cotier Environmental Protection Engineering Co.,Ltd. Address before: 110003 room 51, No. 2506, eleven weft Road, Heping District, Liaoning, Shenyang Patentee before: Shenyang Huatai Kejian Environmental Protection Equipment Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: Wanliutang road in Shenhe District of Shenyang City, Liaoning province 110000 room 126 No. 36-1 Patentee after: LIAONING HUATAI ENVIRONEMNTAL PROTECTION TECHNOLOGY GROUP CO.,LTD. Address before: Wanliutang road in Shenhe District of Shenyang City, Liaoning province 110000 room 126 No. 36-1 Patentee before: Shenyang Huatai cotier Environmental Protection Engineering Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130918 |
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| CX01 | Expiry of patent term |