CN202369410U - Device for reducing water solution of arsenate by SO2 to prepare arsenic trioxide - Google Patents
Device for reducing water solution of arsenate by SO2 to prepare arsenic trioxide Download PDFInfo
- Publication number
- CN202369410U CN202369410U CN2011205365776U CN201120536577U CN202369410U CN 202369410 U CN202369410 U CN 202369410U CN 2011205365776 U CN2011205365776 U CN 2011205365776U CN 201120536577 U CN201120536577 U CN 201120536577U CN 202369410 U CN202369410 U CN 202369410U
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- cell body
- arsenate
- tank body
- ortho
- aqueous solution
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- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
The utility model relates to a device for reducing a water solution of arsenate by SO2 to prepare arsenic trioxide, which comprises a high pressure resistant sealing tank body, an agitator with a rake frame and a SO2 concentration online monitoring instrument are arranged in the tank body, and a jacketed heat exchanger is arranged outside the tank body; and the upper part of the tank body is provided with a feed port, an air intake port and an air discharge port, the lower part of the tank body is arranged to be conical, and a discharge port is arranged at the bottom. With the device, the reaction of reducing the water solution of arsenate by SO2 gas is carried out at high temperature and high pressure, so that the conversion rate of arsenate is increased; the reaction period is shortened through the SO2 concentration online monitoring instrument, a pressure gage, a thermometer, a sight glass and other monitoring devices; and the rake frame can increase the recovery rage of arsenic trioxide and can be widely applied to the treatment of arsenous waste water and water slag.
Description
Technical field
The utility model belongs to chemical field, is specifically related to a kind of SO of being used for
2Also the ortho-arsenate aqueous solution prepares the device of white arsenic.
Background technology
In recent years, along with the mass development and the widespread use of arsenic in industry of metallic ore, arsenic-containing waste water, waste residue amount increase day by day, and arsenic is on the rise to the pollution of environment.At present, wet processing arsenic-containing waste residue and waste liquid mainly are to adopt SO
2The ortho-arsenate aqueous solution also reclaims arsenic with the form of white arsenic.SO
2Solubleness is less, and this reacts SO at normal temperatures and pressures
2Carry out very slowly with the arsenate reactant aqueous solution, existing equipment is difficult to adapt to wastewater treatment in batches.
The utility model content
The purpose of the utility model is for improving SO
2The speed of reaction of ortho-arsenate also, and can monitor SO in real time
2Concentration be so that can grasp the reaction concluding time easily, and effectively prevents the white arsenic that produces from adhering to and a kind of SO of being used for of providing
2Also the ortho-arsenate aqueous solution prepares the device of white arsenic.
The utility model is to be realized by following technical scheme: a kind of SO of being used for
2Also the ortho-arsenate aqueous solution prepares the device of white arsenic, comprises high pressure resistant sealing cell body, is provided with the whisking appliance and the SO of band rake frame in the cell body
2Concentration on-line monitoring appearance, the cell body outside is provided with heating unit; Said cell body top offers opening for feed, inlet mouth and venting port, and taper is arranged in the bottom of cell body, offers discharge port in its bottom.
Said heating unit is a jacketed pipe heat exchanger, comprises chuck, heating steam inlet and condensation-water drain; Described chuck is sleeved on the cell body shell, and chuck is provided with heating steam inlet and condensation-water drain.
Said whisking appliance comprises agitating vane, transmission shaft and rake frame; Rake sets up the bottom that places transmission shaft.
Whisking appliance is connected with the outside drive unit of cell body through transmission shaft.
Said cell body is provided with tensimeter and TM, is provided with visor in the side of cell body.
On said cell body, also be provided with manhole.
Both sides at said cell body are provided with journal stirrup.
The utility model is used for SO
2Also the technology of the ortho-arsenate aqueous solution is provided with jacketed pipe heat exchanger in the cell body outside, can make to be reflected under the comparatively high temps to carry out, thereby accelerate speed of reaction greatly, and pressurization simultaneously can overcome high temperature and cause SO
2The shortcoming that diminishes of solubleness, strengthen its solubleness on the contrary, thus effectively with SO
2Concentration maintains higher level, promotes reaction to carry out, and improves the transformation efficiency of arsenate; Be arranged on the intravital SO of groove
2Concentration on-line monitoring appearance can be any in built-in, full extraction-type or the dilution extraction-type smoke on-line monitoring system, through SO
2Monitoring devices such as concentration on-line monitoring appearance, tensimeter, TM and visor can be monitored the intravital reaction process of groove, and at SO
2Timely stopped reaction shortened reaction time after concentration remained unchanged basically; Groove is intravital to be provided with white arsenic product that the cell body bottom of whisking appliance and the taper of band rake frame can effectively prevent to produce attached to cell wall, improves the recovery of arsenic.Reaction finishes to need not cooling, can directly deliver to subsequent processing and carry out evaporating, concentrating and crystallizing, save energy.On cell body, also being provided with manhole is convenient to cell body inside is overhauled.
From the above mentioned, the utlity model has speed of reaction height, easy to operate, arsenic recovery advantages of higher, can monitor in real time, can be applied to arsenical waste water and dregs in batches and handle reaction process.
Description of drawings:
Fig. 1 is the structural representation of the utility model.
Label among the figure: 1-opening for feed; 2-inlet mouth; 3-venting port; 4-manhole; 5-drive unit; 6-SO
2Concentration on-line monitoring appearance; 7-tensimeter; 8-TM; 9-journal stirrup; 10-visor; 11-rake frame; 12-agitating vane; 13-transmission shaft; 14-chuck; 15-cell body; 16-heating steam inlet; 17-condensation-water drain; 18-discharge port.
Embodiment
Below in conjunction with embodiment and accompanying drawing the utility model is described in detail.
Embodiment:
Present embodiment is as shown in Figure 1, and cell body 15 is high pressure resistant seal casinghousing, and its top offers opening for feed 1, inlet mouth 2 and venting port 3, and taper is arranged in the bottom of cell body 15, offers discharge port 18 in its bottom; The whisking appliance of band rake frame is arranged in the cell body 15; Comprise agitating vane 12, transmission shaft 13 and rake frame 11, transmission shaft 13 is arranged at the position of center line of cell body 15, and the one of which end connects drive unit 5; The other end connects rake frame 11, and the position near the rake frame on transmission shaft 13 is provided with agitating vane 12; Jacketed pipe heat exchanger is one, and shape is identical with cell body but volume is slightly larger than the chuck 14 of cell body is set in cell body 15 peripheries; Form heat tunnel between chuck 14 and the cell body 15; Be provided with heating steam inlet 16 on chuck 14 tops, be provided with condensation-water drain 17 in the bottom of chuck 14.The SO that on cell body 15, is provided with
2It is the HORIBA smoke gas on-line monitor of ENDA-600ZG that concentration on-line monitoring appearance 6 closes the model that many environmental science and technology ltd produces for Hangzhou, on cell body, also is provided with tensimeter 7 and TM 8, is provided with visor 10 in the side of cell body.On cell body 15, also be provided with manhole 4 and journal stirrup 9.
Arsenate solution gets into cell body 15 by opening for feed 1, observes making it to reach certain liquid level through visor 10; Feed heating steam from heating steam inlet 16 again and to jacketed pipe heat exchanger, the intravital arsenate solution of groove is heated, water of condensation is flowed out by condensation-water drain 17; Feed compression SO by inlet mouth 2
2Gas gets into cell body and reacts, and opens drive unit 5 and stir, and (is measured by TM 8) when system temperature in the cell body reaches about 120 ~ 150 ℃, and pressure reaches about 3MPa (to be measured by tensimeter 7), stops logical SO
2, and adjusting heating steam flow velocity makes temperature-stable at 120 ~ 150 ℃.In reaction process along with SO
2The consumption of gas, pressure reduces gradually, when the tensimeter registration is lower than 2.5Mpa, adds SO again
2SO in SO2 concentration on-line monitoring appearance shows cell body
2When gas concentration remains unchanged, i.e. expression reaction has reached balance.Reaction stops to add heating steam after finishing, and opens venting port 3 and makes the interior pressure drop of groove to normal pressure, and gas imports exhaust gas recovery system and handles; Open discharge port 18, the white arsenic that will be deposited on taper cell body bottom through rake frame 11 imports subsequent processing.
Claims (8)
1. one kind is used for SO
2Also the ortho-arsenate aqueous solution prepares the device of white arsenic, it is characterized in that: comprise high pressure resistant sealing cell body, be provided with the whisking appliance and the SO of band rake frame in the cell body
2Concentration on-line monitoring appearance, the cell body outside is provided with heating unit; Said cell body top offers opening for feed, inlet mouth and venting port, and taper is arranged in the bottom of cell body, offers discharge port in its bottom.
2. device according to claim 1 is characterized in that: said heating unit is a jacketed pipe heat exchanger.
3. device according to claim 2 is characterized in that: said jacketed pipe heat exchanger comprises chuck, heating steam inlet and condensation-water drain; Described chuck is sleeved on the cell body shell, and chuck is provided with heating steam inlet and condensation-water drain.
4. device according to claim 1 is characterized in that: said whisking appliance comprises agitating vane, transmission shaft and rake frame; Rake sets up the bottom that places transmission shaft.
5. device according to claim 4 is characterized in that: whisking appliance is connected with the outside drive unit of cell body through transmission shaft.
6. according to each described a kind of SO that is used among the claim 1-5
2Also the ortho-arsenate aqueous solution prepares the device of white arsenic, it is characterized in that: said cell body is provided with tensimeter and TM, is provided with visor in the side of cell body.
7. a kind of SO that is used for according to claim 6
2Also the ortho-arsenate aqueous solution prepares the device of white arsenic, it is characterized in that: on said cell body, also be provided with manhole.
8. a kind of SO that is used for according to claim 7
2Also the ortho-arsenate aqueous solution prepares the device of white arsenic, it is characterized in that: the both sides at said cell body are provided with journal stirrup.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205365776U CN202369410U (en) | 2011-12-20 | 2011-12-20 | Device for reducing water solution of arsenate by SO2 to prepare arsenic trioxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205365776U CN202369410U (en) | 2011-12-20 | 2011-12-20 | Device for reducing water solution of arsenate by SO2 to prepare arsenic trioxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202369410U true CN202369410U (en) | 2012-08-08 |
Family
ID=46593123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205365776U Expired - Lifetime CN202369410U (en) | 2011-12-20 | 2011-12-20 | Device for reducing water solution of arsenate by SO2 to prepare arsenic trioxide |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202369410U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104630471A (en) * | 2015-03-01 | 2015-05-20 | 云南驰宏锌锗股份有限公司 | Method and device for removing magnesium ions in zinc sulfate solution by virtue of pressure |
-
2011
- 2011-12-20 CN CN2011205365776U patent/CN202369410U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104630471A (en) * | 2015-03-01 | 2015-05-20 | 云南驰宏锌锗股份有限公司 | Method and device for removing magnesium ions in zinc sulfate solution by virtue of pressure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120808 |