CN202968117U - Device for producing sulfuric acid by calcium sulfate - Google Patents
Device for producing sulfuric acid by calcium sulfate Download PDFInfo
- Publication number
- CN202968117U CN202968117U CN2012207136297U CN201220713629U CN202968117U CN 202968117 U CN202968117 U CN 202968117U CN 2012207136297 U CN2012207136297 U CN 2012207136297U CN 201220713629 U CN201220713629 U CN 201220713629U CN 202968117 U CN202968117 U CN 202968117U
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- China
- Prior art keywords
- pipeline
- calcining kiln
- sulfuric acid
- barrel
- calcium sulfate
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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Abstract
The utility model discloses a device for producing sulfuric acid by calcium sulfate. The device comprises a motor, a reduction gearbox, a material barrel with a hopper, a screw rod, an unloading mould head, a calcining kiln, a converting chamber and an absorbing tower, wherein the motor is connected with the screw rod by virtue of the reduction gearbox; the screw rod is arranged in the material barrel; a spiral hot air circulating pipeline is arranged in the material barrel wall; one end of the unloading mould head is connected with the tail end of a material barrel by virtue of a flange; the other end of the unloading mould head is connected with the top of the calcining kiln; the top of the calcining kiln is communicated with the bottom of the converting chamber; a slag discharge port is further formed on the bottom of the calcining kiln; the top gas outlet of the converting chamber is communicated with the gas inlet of the spiral hot air circulating pipeline; the gas outlet of the spiral hot air circulating pipeline is communicated with the absorbing tower by a pipeline; and the absorbing tower is communicated with the bottom of the converting chamber by a pipeline with a gas pump. The device for producing sulfuric acid by calcium sulfate disclosed by the utility model is adopted to produce the sulfuric acid, so that the waste heat is circulated well and the harmful gas sulfur dioxide is not exhausted to the atmosphere, and thus the device is energy-saving and environmentally-friendly; and besides, the absorbing rate of the sulfur dioxide is almost 100%.
Description
Technical field
The utility model relates to a kind of equipment of producing sulfuric acid, especially relates to a kind of equipment of producing sulfuric acid with calcium sulfate.
Background technology
Current, China's gas washing in SA production is main raw material mainly with sulphur or sulfurous iron ore, can produce a large amount of wastes in process of production, environment is caused very large harm, whole production process is all the process of high temperature simultaneously, and material is constantly heated, in this process, can produce a large amount of waste heats, these waste heats all waste usually.
Chinese invention patent application 200910019882.5 discloses a kind of technology of utilizing magnesium sulphate to produce sulphuric acid, main employing suspended calcining kiln suspension calcining and sulfur dioxide flue gas reuse preheat the sal epsom raw material, adopt simultaneously " double conversion and double absorption " technique, to improve SO
3The specific absorption of gas has reduced the discharging of waste gas to a certain extent, but has also introduced new fuel in its production process, has introduced possible tramp material, and whole technique is relatively complicated, restive.
Chinese invention patent application 200580008034.4 discloses a kind of device for preparing sulfuric acid, and it adopts the secondary absorption process, mainly comprises primary absorber and secondary resorber, but this device can not be from solving emission gases to the pollution problem of environment in essence.
Chinese invention patent application 200510022528.X discloses the novel method that in a kind of sulphuric acid process, in fluidizing furnace, used heat utilizes, will be in the fluidizing furnace out flue gas be used for heating water or air, realize respectively providing hot water and heating installation to the user, but this application is subject to region and environmental limit, and the feasibility of application is also little.
The utility model content
The technical problems to be solved in the utility model is, overcomes the deficiencies in the prior art, and a kind of waste heat that can utilize in the high-temperature gas course of conveying is provided, reduce noxious gas emission energy-saving and emission-reduction produce the equipment of sulfuric acid with calcium sulfate.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of equipment of producing sulfuric acid with calcium sulfate comprises motor, reduction box, the barrel with hopper, screw rod, discharging die head, calcining kiln, conversion chamber, absorption tower; Described motor is connected with screw rod by reduction box, and described screw rod is installed in barrel; Be provided with spirrillum hot gas cycle pipeline in described barrel wall, spirrillum hot gas cycle conduit air inlet is positioned at the end of barrel, and spirrillum hot gas cycle pipeline air outlet is positioned at the initiating terminal of barrel; One end of described discharging die head is connected with the barrel end by flange, and the other end of described discharging die head is connected with the calcining kiln top; The top of described calcining kiln is communicated with the bottom of conversion chamber by pipeline, and the bottom of calcining kiln also is provided with slag-drip opening, and the air outlet, top of conversion chamber communicates with spirrillum hot gas cycle conduit air inlet by pipeline; Spirrillum hot gas cycle pipeline air outlet communicates with the absorption tower by pipeline, and the absorption tower communicates with the bottom of conversion chamber by the pipeline with gas pump.
The preferred 20-300 mm(of described screw diameter is 150mm more preferably), the preferred 15-40(of length-to-diameter ratio more preferably 32).
working process: first calcium sulfate is pulverized, starter motor, then by hopper, Powdered calcium sulfate is added feeding cylinder, in barrel, calcium sulphate powders is carried out preheating, and (just the initial stage does not also have hot gas cycle, material does not carry out preheating in barrel, barrel has been the conveying effect, calcium sulfate is fully by the calcining kiln heating, carrying out along with reaction, preheat function slowly plays a role, just can suitably reduce the heating power of calcining kiln, to reach energy-conservation purpose), calcium sulphate powders is through screw rod, the discharging die head is delivered to calcining kiln, calcium sulfate is in calcining kiln, at high temperature decompose, generate calcium oxide, sulfurous gas and oxygen, the solid residues such as product calcium oxide are discharged by the slag-drip opening of calcining kiln bottom, gaseous sulfur dioxide and oxygen enter conversion chamber, and (sulfur dioxide gas and oxygen are along with the carrying out of reaction constantly increases, pressure is also along with increase, gas can enter conversion chamber automatically by breather line), be loaded with the Vanadium Pentoxide catalyst in conversion chamber, sulfurous gas and oxygen react under the effect of Vanadium Pentoxide catalyst and generate sulphur trioxide, mixed gas (sulphur trioxide, remaining sulfurous gas and oxygen) through the air outlet at conversion chamber top, spirrillum hot gas cycle conduit air inlet passes in spirrillum hot gas cycle pipeline, calcium sulfate in barrel is carried out preheating, after spirrillum hot gas cycle pipeline, mixed gas enters the absorption tower by spirrillum hot gas cycle pipeline air outlet by pipeline, be loaded with the vitriol oil of concentration 〉=75wt% in the absorption tower, be used for absorbing sulphur trioxide, generate sulfuric acid, remaining unabsorbed gases passes into the conversion chamber recycle by the pipeline with gas pump by the conversion chamber bottom air inlet.
The high-temperature gas of the utility model after with the conversion chamber internal reaction imports the spirrillum hot gas cycle pipeline in barrel, and calcium sulfate is carried out preheating, reduces follow-up energy expenditure, and by screw extrusion press to the calcining kiln feed, reinforced more stable.Compared with prior art, adopt the whole reaction process of the device fabrication sulfuric acid of the utility model utilization, waste heat can obtain good recycle, and obnoxious flavour sulfurous gas does not discharge in atmosphere yet, energy-conserving and environment-protective, the specific absorption of sulfurous gas almost reaches 100%.
Description of drawings
Fig. 1 is the structural representation that the utility model calcium sulfate is produced the apparatus embodiments of sulfuric acid.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
The present embodiment comprises motor 1, reduction box 2, the barrel 4 with hopper 3, screw rod 5, discharging die head 9, calcining kiln 10, conversion chamber 12, absorption tower 13; Described motor 1 is connected with screw rod 5 by reduction box 2, and described screw rod 5 is installed in barrel 4; Be provided with spirrillum hot gas cycle pipeline 6 in described barrel 4 walls, spirrillum hot gas cycle conduit air inlet 7 is positioned at the end of barrel 4, and spirrillum hot gas cycle pipeline air outlet 8 is positioned at the initiating terminal of barrel 4; Described discharging die head 9 one ends are connected with barrel 4 ends by flange, and the other end of described discharging die head 9 is connected with calcining kiln 10 tops; The top of described calcining kiln 10 is communicated with by the bottom of pipeline with conversion chamber 12, and the bottom of calcining kiln 10 also is provided with slag-drip opening 14, and the air outlet, top of conversion chamber 12 communicates with spirrillum hot gas cycle conduit air inlet 7 by pipeline; Spirrillum hot gas cycle pipeline air outlet 8 communicates with absorption tower 13 by pipeline, and absorption tower 13 is by communicating with conversion chamber 12 bottoms with the pipeline of gas pump 11.
Described screw diameter is 150mm, and length-to-diameter ratio is 32.
working process: first calcium sulfate is pulverized, starter motor 1, then by hopper 3, Powdered calcium sulfate is added feeding cylinder 4, in barrel 4, calcium sulphate powders is carried out preheating, and (just the initial stage does not also have hot gas cycle, material does not carry out preheating in barrel 4, barrel 4 has been the conveying effect, calcium sulfate is fully by calcining kiln 10 heating, carrying out along with reaction, preheat function slowly plays a role, just can suitably reduce the heating power of calcining kiln 10, to reach energy-conservation purpose), calcium sulphate powders is through screw rod 5, discharging die head 9 is delivered to calcining kiln 10, calcium sulfate is in calcining kiln 10, at high temperature occur to decompose and generate calcium oxide, sulfurous gas and oxygen, the solid residues such as product calcium oxide are discharged by the slag-drip opening 14 of calcining kiln 10 bottoms, gaseous sulfur dioxide and oxygen enter conversion chamber 12(sulfurous gas and oxygen gas constantly to be increased along with the carrying out of reaction, pressure is also along with increase, gas can enter conversion chamber 12 automatically by breather line), be loaded with the Vanadium Pentoxide catalyst in conversion chamber 12, sulfurous gas and oxygen react under the effect of Vanadium Pentoxide catalyst and generate sulphur trioxide, mixed gas (sulphur trioxide, remaining sulfurous gas and oxygen) through conversion chamber 12 air outlets, top, spirrillum hot gas cycle conduit air inlet 7 passes in spirrillum hot gas cycle pipeline 6, calcium sulfate in barrel 4 is carried out preheating, after spirrillum hot gas cycle pipeline 6, mixed gas enters absorption tower 13 by spirrillum hot gas cycle pipeline air outlet 8 by pipeline, be loaded with the vitriol oil of concentration 〉=75wt% in absorption tower 13, be used for absorbing sulphur trioxide, generate sulfuric acid, remaining unabsorbed gases passes into conversion chamber 12 recycles by the pipeline with gas pump 11 by conversion chamber 12 bottom air inlets.
In the present embodiment, the high-temperature gas after conversion chamber 12 internal reactions is imported the spirrillum hot gas cycle pipeline 6 in barrel 4, calcium sulfate is carried out preheating, reduce follow-up energy expenditure, and by screw extrusion press to the calcining kiln feed, reinforced more stable.Compared with prior art, utilize the whole reaction process of the described device fabrication sulfuric acid of the present embodiment, waste heat obtains good recycle, and obnoxious flavour sulfurous gas does not discharge in atmosphere yet, energy-conserving and environment-protective, and the specific absorption of sulfurous gas almost reaches 100%.
Claims (3)
1. an equipment of producing sulfuric acid with calcium sulfate, is characterized in that, comprises motor, reduction box, the barrel with hopper, screw rod, discharging die head, calcining kiln, conversion chamber, absorption tower; Described motor is connected with screw rod by reduction box, and described screw rod is installed in barrel; Be provided with spirrillum hot gas cycle pipeline in described barrel wall, spirrillum hot gas cycle conduit air inlet is positioned at the end of barrel, and spirrillum hot gas cycle pipeline air outlet is positioned at the initiating terminal of barrel; One end of described discharging die head is connected with the barrel end by flange, and the other end of described discharging die head is connected with the calcining kiln top; The top of described calcining kiln is communicated with the bottom of conversion chamber by pipeline, and the bottom of calcining kiln also is provided with slag-drip opening, and the air outlet, top of conversion chamber is connected by the inlet mouth of pipeline with spirrillum hot gas cycle pipeline; The air outlet of spirrillum hot gas cycle pipeline communicates with the absorption tower by pipeline, and the absorption tower communicates with the bottom of conversion chamber by the pipeline with gas pump.
2. the equipment of producing sulfuric acid with calcium sulfate according to claim 1, is characterized in that, described screw diameter is 20-300 mm, and length-to-diameter ratio is 15-40.
3. the equipment of producing sulfuric acid with calcium sulfate according to claim 2, is characterized in that, described screw diameter is 150mm, and length-to-diameter ratio is 32.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207136297U CN202968117U (en) | 2012-12-21 | 2012-12-21 | Device for producing sulfuric acid by calcium sulfate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207136297U CN202968117U (en) | 2012-12-21 | 2012-12-21 | Device for producing sulfuric acid by calcium sulfate |
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| Publication Number | Publication Date |
|---|---|
| CN202968117U true CN202968117U (en) | 2013-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012207136297U Expired - Lifetime CN202968117U (en) | 2012-12-21 | 2012-12-21 | Device for producing sulfuric acid by calcium sulfate |
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| CN (1) | CN202968117U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103043627A (en) * | 2012-12-21 | 2013-04-17 | 刘立文 | Device for producing sulfuric acid from calcium sulfate |
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2012
- 2012-12-21 CN CN2012207136297U patent/CN202968117U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103043627A (en) * | 2012-12-21 | 2013-04-17 | 刘立文 | Device for producing sulfuric acid from calcium sulfate |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130605 Effective date of abandoning: 20150204 |
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| RGAV | Abandon patent right to avoid regrant |