CN205367723U - Lithium hexafluorophosphate synthetic tail gas processing apparatus - Google Patents
Lithium hexafluorophosphate synthetic tail gas processing apparatus Download PDFInfo
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- CN205367723U CN205367723U CN201620001226.8U CN201620001226U CN205367723U CN 205367723 U CN205367723 U CN 205367723U CN 201620001226 U CN201620001226 U CN 201620001226U CN 205367723 U CN205367723 U CN 205367723U
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Abstract
The utility model discloses a lithium hexafluorophosphate synthetic tail gas processing apparatus, including the booster fan, the tail gas that sets up behind the booster fan the lithium hexafluorophosphate synthesis reactor export carries out the condenser that the condensation was handled, and a jar intercommunication is received to the condensate outlet and the anhydrous hydrogen fluoride of condenser, condenser mixed gas outlet and stirring reaction composite set intercommunication, stirring reaction composite set carries reactor, second level agitation reactor to connect to form by first order agitation reactor, horizontal spin in proper order, set up the materialbalance pipe between first order agitation reactor, the second level agitation reactor, the tail gas export and the rearmounted dust remover of second level agitation reactor are connected, and the tail gas export of dust remover is connected with the water wash column, sets up the caustic wash tower behind the water wash column. The utility model discloses make the HF who mixes in the tail gas effectively removed, improved the quality of by -product hydrochloric acid, widened the application.
Description
Technical field
This utility model relates to a kind of lithium hexafluoro phosphate synthesis tail gas and processes device.
Background technology
Lithium hexafluoro phosphate is typical high-tech as the critical material of lithium rechargeable battery, high-risk production environment, the " three high " technical products of high-leveled and difficult production, the synthesis technique of current main flow is anhydrous hydrogen fluoride solvent method, the tail gas of its generation is the mixture containing HCl and HF, wherein HF accounting is about 10-15%, existing commonly used processing method is fed directly to tail gas washing tower washing absorption, prepare the mixed acid (wherein the content of HF reaches more than 10%) containing HCl and HF, this processing method can not realize efficiently separating of HCl and HF, so that the range of application of its by-product hydrochloric acid is limited.
Summary of the invention
The purpose of this utility model is in that to provide a kind of HF made in mixed tail gas lithium hexafluoro phosphate synthesis tail gas effectively removed to process device.
Technical solution of the present utility model is:
A kind of lithium hexafluoro phosphate synthesis tail gas processes device, it is characterized in that: include booster fan, arranging the tail gas to the outlet of lithium hexafluoro phosphate synthesis reactor after booster fan and carry out the condenser of condensation process, the condensate outlet of condenser receives tank with anhydrous hydrogen fluoride and connects；Condenser mixed gas outlet connects with stirring reaction combination unit, and stirring reaction combination unit is connected to form by first order stirred reactor, flat spin transport reactor, second level stirred reactor successively；Arranging material balance pipe between first order stirred reactor, second level stirred reactor, the offgas outlet of second level stirred reactor is connected with rearmounted cleaner unit, and the offgas outlet of cleaner unit is connected with water scrubber, arranges caustic wash tower after water scrubber.
First order stirred reactor front end is prepared still with LiF and is connected.Described first order stirred reactor, second level stirred reactor are taper stirred reactor.
This utility model makes the HF in mixed tail gas effectively be removed, and improves the quality of by-product hydrochloric acid, has widened its application, and has made fluorine resource obtain circulation comprehensive utilization, it is achieved economic benefit and the double; two Luo of social benefit.
Of the present utility model it is also advantageous in that:
1, pressurization condensation is combined with continuous stirring reacting phase, can effectively remove the HF in lithium hexafluoro phosphate synthesis tail gas, obtain the hydrochloric acid of high-quality, tail gas qualified discharge.
2, the low temperature HCl that in stirring reaction device, reaction heat is cooled down by condensed device removes, and reaction proceeds smoothly at low temperatures, does not need to set cooling system again, makes device simplify.
3, the solid powder that stirring reaction device adds is except eliminating trace HF, tail gas composition will not be produced harmful effect.
4, stirred reactor selects vertical conical stirred reactor can reduce material dead angle and be beneficial to the propelling of material, rolling and disturbance.
5, the LiCl powder in stirred reactor is forced to stir circulation by material balance pipe inside response system, had both enhanced heat and mass and has been conducive to being smoothed out of reaction, and can reduce again gas flow resistance, make air-flow unimpeded.
6, mixing gas sequentially passes through airtight first order taper stirred reactor, flat spin transport reactor, second level cone-type spiral stirred reactor, adds the time of contact of mixing gas and solid powder, is conducive to the elimination of HF in mixing gas.
7, before booster fan is placed in condenser, it is possible to decrease HF gas condensation temperature, increases the yield of HF in condenser, reduce comprehensive energy consumption.
8, by the HF in tail gas after on-line monitoring stirring reaction device, making whole exhaust gas processing device reliable, by-product hydrochloric acid quality is guaranteed.
9, the granularity wide accommodation of filling solid powder in stirring reaction device.
10, horizontal material weighing apparatus pipe can built-in helical feed parts as required.
11, stirred reactor and helical feed reactor electric drilling match use variable frequency adjustment device, convenient adjustment stirring intensity and conveying, circulation rate.
12, in stirring reaction device after the solid powder " inefficacy " of filling, for preparing the raw materials for production lithium fluoride of hexafluorophosphoric acid, thus improve the comprehensive utilization ratio of fluorine resource, it is achieved economic benefit and social benefit doulbe-sides' victory!
13, in process unit, gas through-flow and gas-solid stirring reaction all carry out at dry enclosed system, and to the selection of pipeline and equipment and materials without particular/special requirement, as long as resistance to anhydrous hydrogen chloride and anhydrous hydrogen fluoride, market is easy to get.
14, this utility model technological process is succinct, and device makes simple；Flexible for installation；Invest little；Treatment effeciency is high；Operating cost is low；Security performance is good；Automation mechanized operation can be realized.
15, in stirring reaction device, the fluorine material of tiing up of filling is not limited to solid lithium chloride, Anhydrous Inorganic and anhydrous organic chloride and all can adopt, it is possible to be solid-state, it is also possible to be liquid, selects to accept or reject to ensure that safety and maximizing the benefits are for principle.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Fig. 1 is the structural representation of this utility model special purpose device.
Detailed description of the invention
nullA kind of lithium hexafluoro phosphate synthesis tail gas processing method，Condenser is delivered to after tail gas (Main Ingredients and Appearance is HCl and HF) the intensified blower fan supercharging of lithium hexafluoro phosphate synthesis reactor outlet，In mixing gas, major part HF gas is lowered the temperature condensation within the condenser，Condensed fluid is recycled to anhydrous hydrogen fluoride and receives tank (the condensation response rate of HF gas is up to about 80%)，The mixing gas HF of HCl and trace (Main Ingredients and Appearance be) going out condenser sequentially passes through airtight first order taper stirred reactor along material stirring water conservancy diversion direction、Flat spin transport reactor、Second level cone-type spiral stirred reactor，The LiCl powder being previously added in HF and the stirring reaction device of trace in mixing gas reacts (product is HCl and LiF)，By material balance pipe, (in taper stirred reactor, the storage of material is higher than material balance pipe to LiCl powder in the stirred reactor of the second level，To prevent air flow shortcircuit) return again to first order stirred reactor，LiCl powder is made to force to stir circulation in stirring reaction internal system.Mixing gas is after stirring reaction combination unit, and trace HF therein removes substantially.The tail gas (Main Ingredients and Appearance is HCl) (powder of collection periodically or continuously returns to stirring reaction device by vibrating device) after a small amount of powder that rearmounted cleaner unit captured gas is taken away going out second level stirring reaction device enters the hydrochloric acid (wherein the content of HF is less than 1%) of the prepared high-quality of water scrubber, goes out the gas of water scrubber then through qualified discharge after caustic wash tower alkali cleaning.After stirring reaction plant running certain time, lithium fluoride accounting in solid circle powder improves and the decline of lithium chloride accounting, when lithium chloride ratio drops to after to a certain degree, stirring reaction device " inefficacy ", it is necessary to the solid powder in stirring reaction device is carried out partly or entirely more displacement so that vent gas treatment effect is unaffected.nullFor ensureing production system continuous and steady operation，It is provided with two set stirring reaction devices (A group and B group) to automatically switch，In the tail gas that the online HF detector 8 that switching time point foundation is arranged on the stirred reactor outlet tail gas pipeline of the stirring second level detects, HF content is determined，When in tail gas, HF content reaches prescription，Automatically standby B group stirring reaction device is enabled，Simultaneously close off the air valve (stirring does not stop) of A group，The conveying direction of material is changed by the rotating button of handover operation second level stirred reactor and lower horizontal helical feed reactor motor，Material (mixture of LiCL and LiF) in stirring reaction device is delivered to LiF prepare during still makes it with still the Fluohydric acid. complete reaction of add in advance 35% and prepare LiF，Through solid-liquid separation、The dried production for lithium hexafluoro phosphate of washing，Improve the comprehensive utilization ratio of fluorine resource，Realize economic benefit and social benefit doulbe-sides' victory！Solid powder in A group stirring reaction device supplements fresh solid powder immediately on request after unsnatching standby, so moves in circles.
A kind of special purpose device of lithium hexafluoro phosphate synthesis tail gas processing method, including booster fan 1, arranging the tail gas to the outlet of lithium hexafluoro phosphate synthesis reactor after booster fan and carry out the condenser 2 of condensation process, the condensate outlet of condenser receives tank 3 with anhydrous hydrogen fluoride and connects；Condenser mixed gas outlet connects with stirring reaction combination unit, and stirring reaction combination unit is connected to form by first order stirred reactor 4, flat spin transport reactor 5, second level stirred reactor 6 successively；Arranging material balance pipe 7 between first order stirred reactor, second level stirred reactor, the offgas outlet of second level stirred reactor is connected with rearmounted cleaner unit 9, and the offgas outlet of cleaner unit is connected with water scrubber 10, arranges caustic wash tower 13 after water scrubber.First order stirred reactor front end is prepared still 16 and is connected with LiF.Water scrubber and water washing cycles groove 11, water washing cycles pump 12 form closed circuit；Caustic wash tower and alkali cleaning circulating slot 14, alkali cleaning circulating pump 15 form closed circuit.
Claims (3)
1. a lithium hexafluoro phosphate synthesis tail gas processes device, it is characterized in that: include booster fan, arranging the tail gas to the outlet of lithium hexafluoro phosphate synthesis reactor after booster fan and carry out the condenser of condensation process, the condensate outlet of condenser receives tank with anhydrous hydrogen fluoride and connects；Condenser mixed gas outlet connects with stirring reaction combination unit, and stirring reaction combination unit is connected to form by first order stirred reactor, flat spin transport reactor, second level stirred reactor successively；Arranging material balance pipe between first order stirred reactor, second level stirred reactor, the offgas outlet of second level stirred reactor is connected with rearmounted cleaner unit, and the offgas outlet of cleaner unit is connected with water scrubber, arranges caustic wash tower after water scrubber.
2. lithium hexafluoro phosphate synthesis tail gas according to claim 1 processes device, it is characterized in that: first order stirred reactor front end is prepared still with LiF and is connected.
3. lithium hexafluoro phosphate synthesis tail gas according to claim 1 and 2 processes device, it is characterized in that: described first order stirred reactor, second level stirred reactor are taper stirred reactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201620001226.8U CN205367723U (en) | 2016-01-04 | 2016-01-04 | Lithium hexafluorophosphate synthetic tail gas processing apparatus |
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| CN201620001226.8U CN205367723U (en) | 2016-01-04 | 2016-01-04 | Lithium hexafluorophosphate synthetic tail gas processing apparatus |
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| CN205367723U true CN205367723U (en) | 2016-07-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105460893A (en) * | 2016-01-04 | 2016-04-06 | 江苏九九久科技股份有限公司 | Method and dedicated device for lithium hexafluorophosphate synthesis tail gas treatment |
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2016
- 2016-01-04 CN CN201620001226.8U patent/CN205367723U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105460893A (en) * | 2016-01-04 | 2016-04-06 | 江苏九九久科技股份有限公司 | Method and dedicated device for lithium hexafluorophosphate synthesis tail gas treatment |
| CN107758620A (en) * | 2016-01-04 | 2018-03-06 | 江苏九九久科技有限公司 | The succinct lithium hexafluoro phosphate synthesis tail gas processing method of technological process and special purpose device |
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| C14 | Grant of patent or utility model | ||
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| CP01 | Change in the name or title of a patent holder |
Address after: 226400, No. three, No. 12, the Yellow Sea Economic Development Zone, Rudong County, Jiangsu, Nantong Patentee after: Jiangsu BICON Pharmaceutical Co., Ltd. Address before: 226400, No. three, No. 12, the Yellow Sea Economic Development Zone, Rudong County, Jiangsu, Nantong Patentee before: Jiangsu Jiujiujiu Technology Co., Ltd. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171227 Address after: 226407 Rudong Economic Development Zone, Nantong, the Yellow Sea, No., No. three road, No. 12 Patentee after: Jiangsu nine Jiangsu jiujiujiu Technology Co. Ltd. Address before: 226400, No. three, No. 12, the Yellow Sea Economic Development Zone, Rudong County, Jiangsu, Nantong Patentee before: Jiangsu BICON Pharmaceutical Co., Ltd. |