CN203474479U - Device for preparing sodium thiocyanate from coking ammonium thiocyanate - Google Patents
Device for preparing sodium thiocyanate from coking ammonium thiocyanate Download PDFInfo
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- CN203474479U CN203474479U CN201320589103.7U CN201320589103U CN203474479U CN 203474479 U CN203474479 U CN 203474479U CN 201320589103 U CN201320589103 U CN 201320589103U CN 203474479 U CN203474479 U CN 203474479U
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Abstract
The utility model discloses a device for preparing sodium thiocyanate from coking ammonium thiocyanate. The device comprises a reaction kettle, a gas scrubbing recoverer, a decoloring tower, an ammonium carbonate storage tank, a material pump, a motor, a temperature control device and an alkaline control device; the reaction kettle consists of a stirring paddle, a temperature control coiled pipe, an alkaline control inlet, a temperature control inlet, a feed inlet, a discharge outlet, a temperature control outlet and a reactive gas outlet, wherein the stirring paddle is a multilayer impeller, and the gas scrubbing recoverer is internally provided with ceramic fillers; a microporous filtering device is arranged in the decoloring tower; the upper end of the reaction kettle is connected with the gas scrubbing recoverer, the lower end of the reaction kettle is connected with the decoloring tower through the material pump, and the gas scrubbing recoverer is connected with the ammonium carbonate storage tank. According to the device, solid materials can be evenly mixed in the kettle by adopting the designs of the multilayer impeller stirring paddle, the temperature control coiled pipe, and the alkali control device, the reaction time can be shortened, and the handing capacity can be increased; the gas scrubbing recoverer adopts the ceramic fillers for cooling and scrubbing, so that the tail gas pollution can be reduced; the decoloring tower adopts microporous filtering, so that the whiteness of a product can be enhanced.
Description
Technical field
The utility model relates to a kind of preparation facilities of Sodium Thiocyanate 99, is specially the device that a kind of coking ammonium thiocyanate is prepared Sodium Thiocyanate 99.
Background technology
The conventional wet desulphurization of coke-oven gas is divided into sodium carbonate alkali desulphurization and the ammonia process of desulfurization.This is the approximately 90% coal chemical enterprise employing ammonia process of desulfurization wherein, the ammonia producing while utilizing coking is as alkali source, and cost is lower, but sweetening effectiveness is poor, gas quality after desulfurization is relatively poor, mainly contains the industrial chemicals such as ammonium thiocyanate, ammonium sulfate, ammonium thiosulfate in the desulfurization waste liquor of generation; Approximately 10% coal chemical enterprise adopts alkali desulphurization, using the sodium carbonate of outsourcing as base, increase certain cost, but sweetening effectiveness is better, gas quality after desulfurization is higher, be beneficial to coal gas deep processing, in the desulfurization waste liquor producing after desulfurization, mainly contain the industrial chemicals such as Sodium Thiocyanate 99, sodium sulfate, Sulfothiorine.In order to make better coking desulfurization waste liquor resource utilization, designed the device of coking ammonium thiocyanate conversion Sodium Thiocyanate 99, at present, existing coking ammonium thiocyanate prepares that device reaction time of Sodium Thiocyanate 99 is long, treatment capacity is little, reaction is incomplete, product purity is low, product whiteness is low, ammonia is seriously polluted, is difficult to meet the requirement of industrialized mass.
Utility model content
The technical problem that the utility model solves is to provide a kind of coking ammonium thiocyanate to prepare the device of Sodium Thiocyanate 99, to solve the problem proposing in above-mentioned background technology.
The technical problem that the utility model solves realizes by the following technical solutions:
Coking ammonium thiocyanate is prepared a device for Sodium Thiocyanate 99, comprises reactor, gas scrubbing withdrawer, bleaching tower, volatile salt storage tank, product pump, motor, temperature control unit, alkali control device; Described reactor comprises stirring rake, temperature control coil pipe, alkali control entrance, temperature control entrance, dog-house, discharge port, temperature control outlet, reaction gas outlet, and wherein stirring rake is multi-layer impeller, and temperature control entrance is connected with temperature control unit, and alkali control entrance is connected with alkali control device; Described motor is connected with reactor; There is ceramic packing described gas scrubbing withdrawer inside; In described bleaching tower, establish microporous filter; Described reactor upper end is connected with gas scrubbing withdrawer through outlet pipe, and lower end is connected with bleaching tower through product pump by discharge port, and described gas scrubbing withdrawer is connected with volatile salt storage tank.
Further, described gas scrubbing withdrawer is provided with drain, washings import, manhole, washings outlet, reaction gas outlet, and liquid level is controlled by outlet at bottom automatic regulating valve.
Further, described bleaching tower is provided with reaction solution import, reaction solution outlet.
Further, described alkali control device comprises joins alkali groove, lye vat, volume pump, and alkali control device Real-Time Monitoring pH value is also controlled volume pump and regulated.
Further, described temperature control unit Real-Time Monitoring temperature in the kettle control temperature control medium and regulate.
Beneficial effect
The utility model adopts the design of multi-layer impeller stirring rake temperature control coil pipe and alkali control device, guarantees that solid materials evenly mixes in still, thereby can fully dissolve in time, and in controllable temperature and pH, advance reaction to carry out, shorten the digital ratio secondary response time, expand treatment capacity, improve product purity; Gas scrubbing withdrawer adopts the cooling washing of ceramic packing, and the ammonia that reaction produces and carbonic acid gas be condensation reflection in washing and recycling device, reduces tail gas pollution; Bleaching tower adopts millipore filtration, and to the material decolouring through bleaching tower, discoloring agent is trapped in bleaching tower, after material decolouring, improves product whiteness.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is reactor structural representation;
Fig. 3 is gas scrubbing withdrawer structural representation.
Embodiment
In order to make of the present utility modelly to realize technique means, creation characteristic, reach object and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
Coking ammonium thiocyanate is prepared a device for Sodium Thiocyanate 99 as Figure 1-3, comprises reactor 1, gas scrubbing withdrawer 2, bleaching tower 3, volatile salt storage tank 4, product pump 5, motor 6, temperature control unit 7, alkali control device; Described reactor 1 comprises stirring rake 12, temperature control coil pipe 14, alkali control entrance 15, temperature control entrance 13, dog-house 11, discharge port 17, temperature control outlet 16, reaction gas outlet, wherein stirring rake 12 is multi-layer impeller, temperature control entrance 13 is connected with temperature control unit 7, and alkali control entrance 15 is connected with alkali control device; Described motor 6 is connected with reactor 1; There is ceramic packing described gas scrubbing withdrawer 2 inside; In described bleaching tower 3, establish microporous filter; Described reactor 1 upper end is connected with gas scrubbing withdrawer 2 through outlet pipe, and lower end is connected with bleaching tower 3 through product pump 5 by discharge port 17, and described gas scrubbing withdrawer 2 is connected with volatile salt storage tank 4.
Further, described gas scrubbing withdrawer 2 is provided with drain 18, washings import 19, manhole 20/21, washings outlet 22, reaction gas entrance 23.
Further, described bleaching tower 3 is provided with reaction solution import, reaction solution outlet.
Further, described alkali control device comprises joins alkali groove 8, lye vat 9, volume pump 10, and alkali control device Real-Time Monitoring pH value is also controlled volume pump and regulated.
Further, described temperature control unit 7 Real-Time Monitoring temperature in the kettle control temperature control medium and regulate.
The utility model mode of operation:
1. 70 ℃ of following steam condensates are injected to reactor 1, to liquid level 50%;
2. open motor 6, start stirring rake 12, to the coking ammonium thiocyanate of the amount ratio 1:1.1 of the interior throwing active substance of reactor 1 with without chlorine sodium carbonate, stir respectively;
3. temperature control unit 7 regulates the temperature of reactor interior 1 by temperature control coil pipe 14, front 2h temperature of reaction is controlled at 80-90 ℃, rear 2h temperature of reaction is controlled at reaction between 90-100 ℃, and ammonia and amount of carbon dioxide reduction rising temperature when reactor 1 interior discharge, advance reaction to produce Sodium Thiocyanate 99;
4. the interior material pH value of alkali control device on-line monitoring reactor 1, controls the interior material pH of reactor 1 and reacts at 7.5-8 alkaline range;
5. the gases such as the ammonia producing in reaction process and carbonic acid gas enter 2 condensations of washing and recycling device from reactor 1 outlet pipe;
6. in washing and recycling device 2, have ceramic packing, water of condensation sprays ammonia and carbonic acid gas from the top down, reacts generate volatile salt in two kinds of gas uphill process between filler with water of condensation;
7. the sal volatile liquid level in washing and recycling device 2 is controlled at 50% left and right at the bottom of still, and certainly flow to volatile salt storage tank 4 and recycle;
8., when after to 100 ℃ reaction 2h, prison does not measure ammonia and carbonic acid gas discharge, reaction solution clear, reacts substantially complete;
9. reacting rear material is decoloured through bleaching tower 3 circulations by reactor 1 bottom product pump 5, in decolorization, in the obturator that the millipore filtration of 5-40 object discoloring agent more than 300 orders forms, by two groups of product pumps, reacted material is reciprocating bidirectional circulating in obturator, avoid one-way circulation to cause filter membrane blockage problem, and then improve decolorizing efficiency;
10. to sampling reaction solution, obtain product whiteness qualified, stop decolouring circulation;
11. start vacuum, regulate temperature, and the material after decolouring continues at the interior vacuum concentration of reactor 1 to supersaturation, crystallisation by cooling, and solid-liquid separation, obtains qualified (purity is more than 98%) Sodium Thiocyanate 99 after recrystallization.
More than show and described ultimate principle of the present utility model and principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and specification sheets, describes just illustrates principle of the present utility model; do not departing under the prerequisite of the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.Claimed scope of the present utility model is defined by appending claims and equivalent thereof.
Claims (4)
1. coking ammonium thiocyanate is prepared a device for Sodium Thiocyanate 99, comprises reactor, gas scrubbing withdrawer, bleaching tower, volatile salt storage tank, product pump, motor, temperature control unit, alkali control device; It is characterized in that, described reactor comprises stirring rake, temperature control coil pipe, alkali control entrance, temperature control entrance, dog-house, discharge port, temperature control outlet, reaction gas outlet, wherein stirring rake is multi-layer impeller, and temperature control entrance is connected with temperature control unit, and alkali control entrance is connected with alkali control device; Described motor is connected with reactor; There is ceramic packing described gas scrubbing withdrawer inside; In described bleaching tower, establish microporous filter; Described reactor upper end is connected with gas scrubbing withdrawer through outlet pipe, and lower end is connected with bleaching tower through product pump by discharge port, and described gas scrubbing withdrawer is connected with volatile salt storage tank.
2. a kind of coking ammonium thiocyanate according to claim 1 is prepared the device of Sodium Thiocyanate 99, it is characterized in that, described gas scrubbing withdrawer is provided with drain, washings import, manhole, washings outlet, reaction gas outlet.
3. a kind of coking ammonium thiocyanate according to claim 1 is prepared the device of Sodium Thiocyanate 99, it is characterized in that, described bleaching tower is provided with reaction solution import, reaction solution outlet.
4. a kind of coking ammonium thiocyanate according to claim 1 is prepared the device of Sodium Thiocyanate 99, it is characterized in that, described alkali control device comprises joins alkali groove, lye vat, volume pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320589103.7U CN203474479U (en) | 2013-09-24 | 2013-09-24 | Device for preparing sodium thiocyanate from coking ammonium thiocyanate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320589103.7U CN203474479U (en) | 2013-09-24 | 2013-09-24 | Device for preparing sodium thiocyanate from coking ammonium thiocyanate |
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| Publication Number | Publication Date |
|---|---|
| CN203474479U true CN203474479U (en) | 2014-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320589103.7U Expired - Fee Related CN203474479U (en) | 2013-09-24 | 2013-09-24 | Device for preparing sodium thiocyanate from coking ammonium thiocyanate |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105800649A (en) * | 2016-03-09 | 2016-07-27 | 北京富海天环保科技有限公司 | Method for preparing sodium thiocyanate from ammonia desulphurization waste liquid and sodium carbonate as raw material |
| CN111773750A (en) * | 2020-05-28 | 2020-10-16 | 辽宁科技大学 | Non-blast furnace ironmaking ADA desulfurization salt extraction conveying system |
| CN113145041A (en) * | 2021-06-11 | 2021-07-23 | 晋盛智能装备制造有限公司 | Sulfur cyanide mother liquor processing system of enrichment macromolecular impurity |
-
2013
- 2013-09-24 CN CN201320589103.7U patent/CN203474479U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105800649A (en) * | 2016-03-09 | 2016-07-27 | 北京富海天环保科技有限公司 | Method for preparing sodium thiocyanate from ammonia desulphurization waste liquid and sodium carbonate as raw material |
| CN111773750A (en) * | 2020-05-28 | 2020-10-16 | 辽宁科技大学 | Non-blast furnace ironmaking ADA desulfurization salt extraction conveying system |
| CN113145041A (en) * | 2021-06-11 | 2021-07-23 | 晋盛智能装备制造有限公司 | Sulfur cyanide mother liquor processing system of enrichment macromolecular impurity |
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140312 Termination date: 20160924 |
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| CF01 | Termination of patent right due to non-payment of annual fee |