CN220071599U - Acid dripping anti-corrosion device for sodium sulfate filtrate tank - Google Patents
Acid dripping anti-corrosion device for sodium sulfate filtrate tank Download PDFInfo
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- CN220071599U CN220071599U CN202321584692.XU CN202321584692U CN220071599U CN 220071599 U CN220071599 U CN 220071599U CN 202321584692 U CN202321584692 U CN 202321584692U CN 220071599 U CN220071599 U CN 220071599U
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- pipeline
- filtrate
- pump
- sodium sulfate
- gas
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- 239000000706 filtrate Substances 0.000 title claims abstract description 87
- 229910052938 sodium sulfate Inorganic materials 0.000 title claims abstract description 40
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 title claims abstract description 39
- 235000011152 sodium sulphate Nutrition 0.000 title claims abstract description 39
- 238000005260 corrosion Methods 0.000 title claims abstract description 24
- 239000002253 acid Substances 0.000 title claims abstract description 15
- 238000006243 chemical reaction Methods 0.000 claims abstract description 59
- 239000007788 liquid Substances 0.000 claims abstract description 59
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 28
- 238000001704 evaporation Methods 0.000 claims abstract description 26
- 230000008020 evaporation Effects 0.000 claims abstract description 26
- 230000007797 corrosion Effects 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 14
- 230000020477 pH reduction Effects 0.000 claims abstract description 11
- 238000005070 sampling Methods 0.000 claims description 11
- 210000003298 dental enamel Anatomy 0.000 claims description 5
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 abstract description 52
- 235000010265 sodium sulphite Nutrition 0.000 abstract description 26
- JWAZRIHNYRIHIV-UHFFFAOYSA-N 2-naphthol Chemical compound C1=CC=CC2=CC(O)=CC=C21 JWAZRIHNYRIHIV-UHFFFAOYSA-N 0.000 abstract description 10
- NESLWCLHZZISNB-UHFFFAOYSA-M sodium phenolate Chemical compound [Na+].[O-]C1=CC=CC=C1 NESLWCLHZZISNB-UHFFFAOYSA-M 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 229950011260 betanaphthol Drugs 0.000 abstract description 5
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 12
- 239000007789 gas Substances 0.000 description 12
- 238000001640 fractional crystallisation Methods 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 229910052785 arsenic Inorganic materials 0.000 description 4
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000002425 crystallisation Methods 0.000 description 3
- 230000008025 crystallization Effects 0.000 description 3
- 238000006477 desulfuration reaction Methods 0.000 description 3
- 230000023556 desulfurization Effects 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 239000005011 phenolic resin Substances 0.000 description 2
- 229920001568 phenolic resin Polymers 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 239000012295 chemical reaction liquid Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000001698 pyrogenic effect Effects 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- HIEHAIZHJZLEPQ-UHFFFAOYSA-M sodium;naphthalene-1-sulfonate Chemical compound [Na+].C1=CC=C2C(S(=O)(=O)[O-])=CC=CC2=C1 HIEHAIZHJZLEPQ-UHFFFAOYSA-M 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000006277 sulfonation reaction Methods 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
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- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The utility model relates to a device for treating sodium sulfite and preventing corrosion in sodium phenolate solution obtained in the production process of 2-naphthol, in particular to a device for preventing corrosion of acid dripping of a sodium sulfate filtrate tank. The device comprises a sodium sulfate secondary filtrate tank and a multi-effect evaporation system; the device also comprises a reaction kettle made of corrosion-resistant materials, a gas-liquid separator, a sulfuric acid metering tank and an acidification kettle; the outlet side of the first filtrate pump is respectively connected with a multi-effect evaporation system and a first feed inlet of the reaction kettle through two branch pipelines; the sulfuric acid metering tank is connected with a first feed inlet of the gas-liquid separator through a pipeline, and a top gas outlet of the gas-liquid separator is connected with the acidification kettle; the discharge port at the bottom of the gas-liquid separator is connected with the second feed port of the reaction kettle, the discharge port at the bottom of the reaction kettle is connected with a first circulating pump through a pipeline, and the outlet side of the first circulating pump is respectively connected with the second feed port of the gas-liquid separator and the multi-effect evaporation system.
Description
Technical Field
The utility model relates to a device for treating sodium sulfite and preventing corrosion in sodium phenolate solution obtained in the production process of 2-naphthol, in particular to a device for preventing corrosion of acid dripping of a sodium sulfate filtrate tank.
Background
In the production process of 2-naphthol, sodium phenolate solution is obtained after sulfonation and neutralization, and the filtrate part in the solution contains sodium sulfite, sodium sulfate, water and trace sodium naphthalene sulfonate, so that salt in the solution is extracted through a multi-effect evaporation system, and the salt extraction difficulty is certainly increased due to the existence of sodium sulfite. For the treatment of sodium sulfite, it is most conceivable to use the following formula: h 2 SO 4 (concentrated) +Na 2 SO 3 == Na 2 SO 4 + H 2 O + SO 2 And ∈, so that the reaction principle of sodium sulfite and sulfuric acid can be adopted to convert a small amount of sodium sulfite into sodium sulfate for the next operation. However, the acid dripping operation is carried out directly in a sodium sulfate filtrate square tank, which leads to strong equipment corrosion and a large amount of SO 2 The treatment of gas has the technical problem of loopholes.
In the prior art, patent documents related to sodium sulfite treatment are as follows: chinese patents ZL202221287006.8 and 202222654783.8. 202221287006.8-a device for recovering sodium sulfite, which comprises a desulfurization system, an arsenic removal system and a separation system; the desulfurization system is connected with the arsenic removal system, and the arsenic removal system is connected with the separation system; the desulfurization system comprises a water washing spray tower, an alkaline washing spray tower, a water washing liquid temporary storage tank and an alkaline washing liquid temporary storage tank; the scheme realizes the treatment of sodium sulfite by properly prolonging the stay time of sodium sulfite evaporation concentrate in an evaporator or allowing sodium sulfite particles to grow up in a thickener, but because the scheme is mainly used in the field of exceeding the standard of sodium sulfite produced by treating desulfurizing liquid with arsenic alkali residue pyrogenic process flue gas, the device and the corresponding method cannot be applied to the treatment of sodium sulfite in sodium phenolate solution obtained in the 2-naphthol production process.
In a device for treating sulfur dioxide flue gas and crystallizing sodium sulfite in China patent 202222654783.8, the device comprises a sulfur dioxide absorption tower and a sodium sulfite fractional crystallization evaporator, a liquid outflow pipe of the sulfur dioxide absorption tower is communicated with the sodium sulfite fractional crystallization evaporator, the sulfur dioxide absorption tower is communicated with a first regulating tank, and the first regulating tank is used for adding liquid caustic soda solution into the absorption tower; the sodium sulfite fractional crystallization evaporator is communicated with the solid-liquid separator, a liquid discharge port of the solid-liquid separator is communicated with the second regulating tank, the second regulating tank is communicated with the sodium sulfite fractional crystallization evaporator, and a solid discharge port of the solid-liquid separator is connected with the drying procedure; the sodium sulfite fractional crystallization evaporator comprises a first-effect evaporator and a second-effect evaporator, wherein the first-effect evaporator and the second-effect evaporator are connected in series, and the outlet end of the second-effect evaporator is connected with a solid-liquid separator. The device adopts a secondary evaporator, sodium chloride is added into liquid alkali to improve the crystallization rate of sodium sulfite, and the crystal growth speed is improved, so that the effect of subsequent centrifugal separation is ensured; and a second-stage hydrocyclone is adopted for solid-liquid separation, a flash tank is added between the two-stage hydrocyclones, and the evaporation crystallization effect is improved again. The solution is also to separate sodium sulfite by crystallization and centrifugation, but the device is not applicable to the treatment of sodium sulfite in sodium phenolate solution obtained in the production process of 2-naphthol of the utility model because the device is suitable for treating a large amount of low-concentration sulfur dioxide ring-collecting flue gas generated in the smelting process of sulphide ores.
In summary, although the above prior art is related to the subject matter of the present utility model, the structure and the corresponding working principle thereof cannot solve the technical problem of the present utility model at all, so a device capable of effectively removing sodium sulfite in sodium phenolate solution and effectively avoiding the corrosion problem of filtrate tank is highly needed.
Disclosure of Invention
The utility model aims to solve the problem that sodium sulfite in sodium phenolate solution obtained in the current production process of 2-naphtholIs easy to lead to strong equipment corrosion and a large amount of SO during treatment 2 The technical problem that gas can not be discharged is to provide an acid-dripping anti-corrosion device for a sodium sulfate filtrate tank.
The utility model is realized by adopting the following technical scheme: an acid dripping anticorrosion device for a sodium sulfate filtrate tank comprises a sodium sulfate secondary filtrate tank and a multi-effect evaporation system; the device also comprises a reaction kettle made of corrosion-resistant materials, a gas-liquid separator, a sulfuric acid metering tank and an acidification kettle; the outlet side of the first filtrate pump is respectively connected with a multi-effect evaporation system and a first feed inlet at the top of the reaction kettle through two branch pipelines; the sulfuric acid metering tank is connected with a first feed inlet of the gas-liquid separator through a pipeline, and a top gas outlet of the gas-liquid separator is connected with the acidification kettle; the discharge port at the bottom of the gas-liquid separator is connected with a second feed port of the reaction kettle, the discharge port at the bottom of the reaction kettle is connected with a first circulating pump through a pipeline, and the outlet side of the first circulating pump is respectively connected with the second feed port of the gas-liquid separator and a multi-effect evaporation system through two branch pipelines; the outlet side of the first circulating pump is connected with a sampling port through a branch pipeline; the pipelines are provided with pipeline pumps, and the gas outlet of the gas-liquid separator is provided with a valve.
When sodium sulfite is treated, the material in the second-stage sodium sulfate filtering liquid tank is pumped into the reaction kettle made of anticorrosive material through the first filtering liquid pump, and the pipeline pump connected to the sulfuric acid metering tank above the gas-liquid separator is opened to react in the reaction kettle to produce sodium sulfate, water and SO 2 A gas; generated SO 2 The gas passes through a gas-liquid separator and is stored for acidification. Liquid phase substances are extracted from the bottom of the reaction kettle and self-circulated through a first circulating pump of the reaction kettle until the materials at the bottom of the reaction kettle meet the indexes (detected through a sampling port of the first circulating pump), the self-circulation pipelines of the first circulating pump and the reaction kettle are closed, and a pipeline pump which goes to a multi-effect evaporation system is opened to extract salt. The pipeline pump is used for controlling the on-off and flow of the corresponding pipeline, and the valve is used for controlling the on-off and flow of the gas outlet of the gas-liquid separator.
Further, a second filtrate pump is connected to the discharge port of the sodium sulfate secondary filtrate tank through a pipeline, and a second filtrate pump outlet side pipeline is communicated with a first filtrate pump outlet side pipeline, so that the first filtrate pump and the second filtrate pump are connected with a multi-effect evaporation system and a first feed port at the top of the reaction kettle; the discharge port of the reaction kettle is also connected with a second circulating pump through a pipeline; the outlet side of the second circulating pump is provided with a sampling port through a branch pipeline, and the branch pipeline is provided with a pipeline pump; the outlet side of the second circulating pump is communicated with the pipeline at the outlet side of the first circulating pump through a pipeline, so that the first circulating pump and the second circulating pump are connected with the gas-liquid separator and the multi-effect evaporation system together.
The first and second filter liquid pumps are one by one, and the first and second circulating pumps are one by one, so that operation can not be performed due to the fact that one of the first and second circulating pumps fails.
Further, a discharge hole of the sodium sulfate secondary filtrate tank is connected with a steam pipeline for introducing external steam, a valve is arranged on a main pipeline of the steam pipeline, the steam pipeline is divided into two pipelines after passing through the valve and is respectively connected to pipelines at the inlet sides of the first filtrate pump and the second filtrate pump, and each pipeline is provided with a pipeline pump;
the communication part of the first circulating pump and the second circulating pump is communicated with external steam through a steam pipeline, and a valve is arranged on the steam pipeline.
The steam pipeline is filled with external steam, so that the pipeline after the operation is completed can be purged.
According to the device, the reaction of sodium sulfate filtrate and concentrated sulfuric acid is completed by adding the corrosion-resistant reaction kettle, and meanwhile, a gas-liquid separator is added above the reaction kettle to promote SO 2 The gas is separated from the reaction liquid, and the addition of the equipment achieves the aim of corrosion prevention and solves the problems of environmental pollution and personnel injury possibly caused by equipment leakage. The reaction kettle enables the reaction to be continuously carried out through the circulating pipeline, is beneficial to the thorough reaction, and provides sufficient technical support for obtaining materials meeting the standard.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model.
The device comprises a 1-sodium sulfate secondary filtrate tank, a 2-multi-effect evaporation system, a 3-reaction kettle, a 4-gas-liquid separator, a 5-sulfuric acid metering tank, a 6-acidification kettle, a 7-first filtrate pump, an 8-second filtrate pump, a 9-first circulating pump and a 10-second circulating pump;
31-operating platform, 32-ladder.
Detailed Description
Example 1
An acid dripping anticorrosion device for a sodium sulfate filtrate tank comprises a sodium sulfate secondary filtrate tank 1 and a multi-effect evaporation system 2; the device also comprises a reaction kettle 3 made of corrosion-resistant materials, a gas-liquid separator 4, a sulfuric acid metering tank 5 and an acidification kettle 6; the discharge port of the sodium sulfate secondary filtrate tank 1 is connected with a first filtrate pump 7 through a pipeline, and the outlet side of the first filtrate pump 7 is respectively connected to the multiple-effect evaporation system 2 and a first feed port at the top of the reaction kettle 3 through two branch pipelines; the sulfuric acid metering tank 5 is connected with a first feed inlet of the gas-liquid separator 4 through a pipeline, and a top air outlet of the gas-liquid separator 4 is connected with the acidification kettle 6; the discharge port at the bottom of the gas-liquid separator 4 is connected with the second feed port of the reaction kettle 3, the discharge port at the bottom of the reaction kettle 3 is connected with a first circulating pump 9 through a pipeline, and the outlet side of the first circulating pump 9 is respectively connected with the second feed port of the gas-liquid separator 4 and the multi-effect evaporation system 2 through two branch pipelines; the outlet side of the first circulating pump 9 is connected with a sampling port through a branch pipeline; the pipelines are provided with pipeline pumps, and the gas outlet of the gas-liquid separator 4 is provided with a valve. The discharge port of the sodium sulfate secondary filtrate tank 1 is also connected with a second filtrate pump 8 through a pipeline, and the pipeline at the outlet side of the second filtrate pump 8 is communicated with the pipeline at the outlet side of the first filtrate pump 7, so that the first filtrate pump and the second filtrate pump are connected with the multi-effect evaporation system 2 and the first feed port at the top of the reaction kettle 3 together; the discharge port of the reaction kettle 3 is also connected with a second circulating pump 10 through a pipeline, the outlet side of the second circulating pump 10 is provided with a sampling port through a branch pipeline, and the branch pipeline is provided with a pipeline pump; the outlet side of the second circulating pump 10 is communicated with the pipeline at the outlet side of the first circulating pump 9 through a pipeline, so that the first circulating pump and the second circulating pump are connected with the gas-liquid separator 4 and the multi-effect evaporation system 2 together.
The two filtrate pumps are one by one, and the two circulating pumps are one by one; the materials in the sodium sulfate secondary filtrate tank are pumped to the reaction kettle, and concentrated sulfuric acid is added to the reaction kettle for reaction, so that the corrosion of the concentrated sulfuric acid to the sodium sulfate secondary filtrate tank is effectively avoided, and sulfur dioxide gas generated by the reaction can be recovered; the addition of the circulating pump can promote the chemical reaction in the reaction kettle to be more thoroughly carried out.
Example 2
The discharge port of the sodium sulfate secondary filtrate tank 1 is connected with a steam pipeline so as to introduce external steam, a valve is arranged on a main pipeline of the steam pipeline, the steam pipeline is divided into two paths after passing through the valve and is respectively connected to pipelines at the inlet sides of the first filtrate pump and the second filtrate pump, and each path of steam pipeline is provided with a pipeline pump;
the communication part of the first circulating pump and the second circulating pump is communicated with external steam through a steam pipeline, and a valve is arranged on the steam pipeline.
The steam can sweep the pipeline after the operation is finished, so that the inside of the pipeline is kept clean and unobstructed.
Example 3
The outlet sides of the first and second filtrate pumps and the first and second circulating pumps are respectively provided with a pressure indicator; the inlet side and the outlet side of the first filtrate pump and the second filtrate pump are connected with sampling ports through branch pipelines, and the branch pipelines are provided with pipeline pumps; the sodium sulfate secondary filtrate tank 1 is connected with a liquid level sensor and a temperature element. The top of the reaction kettle 3 is provided with a liquid level indicator, a pressure indicator and a thermometer.
Example 4
An operation platform 31 is arranged on the circumference of the reaction kettle 3 close to the top; the operating platform is provided with a ladder 32; the reaction kettle 3 is an enamel kettle.
The operating platform 31 and the ladder 32 are used for checking the numerical values of a liquid level indicator, a pressure indicator and a thermometer which are arranged on the top of the reaction kettle 3, and can be used for assisting in monitoring the reaction process.
The first and second pipelines from the discharge port to the first and second filtrate pumps of the discharge port of the sodium sulfate secondary filtrate tank 1 are DN100 pipes, and the first filtrate pump 7 to the multi-effect evaporation system 2 are sequentially connected with DN80 tetrafluoro pipes through DN80 stainless steel pipes; the first filtrate pump 7 is connected with the reaction kettle 3 through DN80 stainless steel pipes; the sulfuric acid metering tank 5 is connected with the gas-liquid separator 4 through a DN25 carbon steel pipe, the gas-liquid separator 4 is connected with the acidification kettle 6 through a DN50 phenolic resin pipe, and a manual regulating valve is connected on the DN50 phenolic resin pipe in series; the discharge port of the reaction kettle 3 is connected with a first circulating pump and a second circulating pump through DN100 tetrafluoropipes, the first circulating pump 9 is connected with a second feed port of the gas-liquid separator 4 through DN100 tetrafluoropipes and DN80 tetrafluoropipes in sequence, the first circulating pump 9 is connected with the multi-effect evaporation system 2 through DN100 tetrafluoropipes and DN80 tetrafluoropipes in sequence, sampling ports are arranged on the inlet side and the outlet side of the first filtrate pump and the second filtrate pump, and sampling ports are arranged on the outlet side of the first circulating pump and the second circulating pump;
a pipeline pump is arranged at the discharge port of the sodium sulfate secondary filtrate tank 1, and pipeline pumps are arranged on the inlet side pipelines of the first filtrate pump and the second filtrate pump; the outlet sides of the first filtrate pump and the second filtrate pump are sequentially connected with a plurality of pipeline pumps in series; the outlet sides of the first filtrate pump and the second filtrate pump are provided with pressure indicators; pipeline pumps are arranged between the discharge port of the reaction kettle and the first and second circulating pumps, and the outlet sides of the first and second circulating pumps are connected with a plurality of pipeline pumps in series. The pipeline pumps are respectively arranged on the pipelines of the first and second filtrate pumps and the first and second circulating pumps connected with the pressure sensor; the first and second filtrate pumps and the first and second circulating pumps are centrifugal pumps.
As one implementation scheme, under the condition of steam tracing, the material of the sodium sulfate secondary filtrate tank is pumped into a reaction kettle made of enamel by a filtrate pump, and simultaneously, a valve on a pipeline between a sulfuric acid metering tank above a gas-liquid separator and the gas-liquid separator is opened, SO that SO is generated by reaction 2 The gas passes through a gas-liquid separator and is stored for acidification. Liquid phase substances are extracted from the bottom of the reaction kettle and self-circulated by a circulating pump at the top of the reaction kettle until the substrate substances of the reaction kettle meet the indexes, a valve (a pipeline pump) of a self-circulation pipeline is closed, and a valve (the pipeline pump) which goes to a multi-effect evaporation system is opened to extract salt.
The direct acid dripping behavior before improvement is easy to cause equipment corrosion, material leakage, environmental pollution and injury to personal safety, and in addition, the SO is generated previously 2 And the resources cannot be fully utilized because the resources cannot be released. The improved device adopts enamel material to easily solve the corrosion problemThe problem of corrosion and the SO is solved by the gas-liquid separator 2 The difficult problem that the gas can not come out.
Gas-liquid separator: a material 316L;
and (3) a reaction kettle: the material enamel has the specification phi 2400/2600x4346 mm and 16 m.
Claims (8)
1. An acid dripping anticorrosion device for a sodium sulfate filtrate tank comprises a sodium sulfate secondary filtrate tank (1) and a multi-effect evaporation system (2); the device is characterized by further comprising a reaction kettle (3) made of corrosion-resistant materials, a gas-liquid separator (4), a sulfuric acid metering tank (5) and an acidification kettle (6); the discharge port of the sodium sulfate secondary filtrate tank (1) is connected with a first filtrate pump (7) through a pipeline, and the outlet side of the first filtrate pump (7) is respectively connected with a multi-effect evaporation system (2) and a first feed port at the top of the reaction kettle (3) through two branch pipelines; the sulfuric acid metering tank (5) is connected with a first feed inlet of the gas-liquid separator (4) through a pipeline, and a top air outlet of the gas-liquid separator (4) is connected with the acidification kettle (6); the discharge port at the bottom of the gas-liquid separator (4) is connected with the second feed port of the reaction kettle (3), the discharge port at the bottom of the reaction kettle (3) is connected with a first circulating pump (9) through a pipeline, and the outlet side of the first circulating pump (9) is respectively connected with the second feed port of the gas-liquid separator (4) and the multi-effect evaporation system (2) through two branch pipelines; the outlet side of the first circulating pump (9) is connected with a sampling port through a branch pipeline; the pipelines are provided with pipeline pumps, and the air outlet of the gas-liquid separator (4) is provided with a valve.
2. The acid dripping and corrosion preventing device for the sodium sulfate filtrate tank is characterized in that a second filtrate pump (8) is connected to a discharge port of the sodium sulfate secondary filtrate tank (1) through a pipeline, and an outlet side pipeline of the second filtrate pump (8) is communicated with an outlet side pipeline of the first filtrate pump (7) so that the first filtrate pump and the second filtrate pump are connected with a multi-effect evaporation system (2) and a first feed port at the top of a reaction kettle (3); the discharge port of the reaction kettle (3) is also connected with a second circulating pump (10) through a pipeline, the outlet side of the second circulating pump (10) is provided with a sampling port through a branch pipeline, and the branch pipeline is provided with a pipeline pump; the outlet side of the second circulating pump (10) is communicated with the outlet side pipeline of the first circulating pump (9) through a pipeline, so that the first circulating pump and the second circulating pump are connected with the gas-liquid separator (4) and the multi-effect evaporation system (2) together.
3. The acid dripping and corrosion preventing device for the sodium sulfate filtrate tank is characterized in that a discharge hole of the sodium sulfate secondary filtrate tank (1) is connected with a steam pipeline for introducing external steam, a valve is arranged on a main pipeline of the steam pipeline, the steam pipeline is divided into two pipelines after passing through the valve and is respectively connected to pipelines at the inlet sides of a first filtrate pump and a second filtrate pump, and each pipeline is provided with a pipeline pump;
the communication part of the outlet sides of the first circulating pump and the second circulating pump is communicated with external steam through a steam pipeline, and a valve is arranged on the steam pipeline.
4. A sodium sulfate filtrate tank acid drip anticorrosion apparatus as claimed in claim 3, characterized in that the first and second filtrate pumps and the outlet sides of the first and second circulation pumps are provided with pressure indicators.
5. The apparatus of claim 4, wherein the inlet side and the outlet side of the first and second filtrate pumps are connected to the sampling port via a branch pipe, and the branch pipe is provided with a pipe pump.
6. An acid dripping and corrosion preventing device for a sodium sulfate filtrate tank as claimed in any one of claims 1-5, characterized in that a liquid level sensor and a temperature element are connected to the sodium sulfate secondary filtrate tank (1).
7. The acid dripping and corrosion preventing device for the sodium sulfate filtrate tank is characterized in that a liquid level indicator, a pressure indicator and a thermometer are arranged at the top of the reaction kettle (3).
8. A sodium sulfate filtrate tank acid dripping anti-corrosion device according to any one of claims 1-5, characterized in that an operation platform (31) is arranged on the circumference of the reaction kettle (3) near the top; the operating platform is provided with a ladder (32); the reaction kettle (3) is an enamel kettle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321584692.XU CN220071599U (en) | 2023-06-21 | 2023-06-21 | Acid dripping anti-corrosion device for sodium sulfate filtrate tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321584692.XU CN220071599U (en) | 2023-06-21 | 2023-06-21 | Acid dripping anti-corrosion device for sodium sulfate filtrate tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220071599U true CN220071599U (en) | 2023-11-24 |
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ID=88829702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321584692.XU Active CN220071599U (en) | 2023-06-21 | 2023-06-21 | Acid dripping anti-corrosion device for sodium sulfate filtrate tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220071599U (en) |
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2023
- 2023-06-21 CN CN202321584692.XU patent/CN220071599U/en active Active
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