CN101654264B - Special device for continuously preparing light magnesium carbonate by low-pressure pyrolysis - Google Patents
Special device for continuously preparing light magnesium carbonate by low-pressure pyrolysis Download PDFInfo
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- CN101654264B CN101654264B CN2009101802066A CN200910180206A CN101654264B CN 101654264 B CN101654264 B CN 101654264B CN 2009101802066 A CN2009101802066 A CN 2009101802066A CN 200910180206 A CN200910180206 A CN 200910180206A CN 101654264 B CN101654264 B CN 101654264B
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Abstract
The invention relates to a special device for continuously preparing light magnesium carbonate by low-pressure pyrolysis, comprising a pyrolysis tank (6), a boiler (2) and a vacuum pump (12). The pyrolysis tank (6) is provided with a feeding pipe (4) and a discharge pipe (13); the feeding pipe (4) is connected with a medium circulation cavity of the boiler (2); the discharge pipe (13) is connected with the medium circulation cavity of the boiler (2) through a suspension separator (16) with a discharge pipe (14); the vacuum pump (12) is connected with a gas storage tank (8) through a suction pipe (9); and the gas storage tank (8) is connected with the pyrolysis tank (6) through an exhaust pipe (7) and a gas return pipe (10). Materials are heated by directly flowing through the internal cavity of the boiler so that a procedure of steam heating is omitted, the equipment is simplified and the loss of heat energy is minimized. With the low-pressure pyrolysis, the reaction temperature required by the pyrolysis is reduced to 50 DEG C to 60 DEG C from the traditional 95 DEG C to 105 DEG C. According to calculation, the special device saves the energy by more than 30 percent than the traditional pyrolysis equipment.
Description
(1), technical field
The present invention relates to a kind of isolated plant for preparing Magnesium Carbonate Light 41-45.Be particularly related to the serialization production system device of preparation Magnesium Carbonate Light 41-45 under a kind of low-pressure state.
(2), background technology
The Magnesium hydrogen carbonate aqueous solution is called heavy magnesium water again, and the process that decomposes becomes basic carbonate magnesium precipitate (being Magnesium Carbonate Light 41-45 again) and emits carbonic acid gas is pyrolysis of the present invention.Existing pyrolysis installation mainly contains pyrolytic tank, pyrolysis tower and tubular type pyrolyzer.Wherein, pyrolytic tank belongs to periodical operation, complicated operation, and production efficiency is low; The pyrolysis tower belongs to operate continuously, but investment is big, and operation stability can not be satisfactory; The tubular type pyrolyzer also belongs to operate continuously, but the ubiquity complex structure, the shortcoming that the steam fluctuation is big.
On the other hand, aforesaid device generally all needs steam heating, and energy consumption is generally higher, and safety performance is relatively poor, and the reaction controllability is also not as people's will.
(3), summary of the invention
Technical problem to be solved by this invention is, a kind of isolated plant of continuously preparing light magnesium carbonate by low-pressure pyrolysis is provided, and system works under low pressure, low temperature, and it is low to have energy consumption, and the characteristics that security is good are in order to overcome the defective of existing pyrolysis plant.
It is as follows that the present invention solves the problems of the technologies described above the technical scheme that is adopted:
A kind of isolated plant of continuously preparing light magnesium carbonate by low-pressure pyrolysis comprises the pyrolytic tank that has feeding tube and tremie pipe, it is characterized in that: also comprise boiler and vacuum pump; Described feeding tube connects the medium circulation chamber of boiler; Described tremie pipe connects the medium circulation chamber of boiler by the suspension separator of band discharge nozzle; Described vacuum pump is connected with gas-holder by extraction pipe, and gas-holder is connected with pyrolytic tank with muffler by vapor pipe.
Also comprise recycle pump, its two circulation tubes are connected to the different heights position in the medium circulation chamber of boiler.
The Floating Ball Liquid Level valve that is used to control the feeding tube break-make is installed in the described pyrolytic tank.
Between extraction pipe and vacuum pump, be connected with the contact vacuum pressure gauge.
Also comprise and being used for to the take away pump of the medium circulation chamber of boiler conveying as the heavy magnesium water of material.
Be connected with discharging pump between described tremie pipe and the described suspension separator.
Positively effect of the present invention is: (1), the material boiler intracavity of directly flowing through is finished its heat-processed, has saved the steam heating operation, has not only simplified equipment, and heat energy loss is reduced to bottom line.Cooperate the low pressure pyrolysis, the pyrolysis desired reaction temperature is reduced to 50～60 ℃ by traditional 95～105 ℃.According to measuring and calculating, the more traditional pyrolysis device energy conservation of the present invention is more than 30%.(2), finish the pyrolysis operations and the control automatically continuously of total system by take away pump, boiler, Floating Ball Liquid Level valve, contact vacuum pressure gauge, discharging pump, suspension separator etc., realize the low pressure continuous pyrolysis of material, had higher level of automation and higher production efficiency.(3), under low-temp low-pressure, carry out pyrolytic reaction, can effectively destroy the nucleus of magnesiumcarbonate and grow up, make its dispersing property better, granularity is littler, quality product is more excellent.(4), adopt normal-pressure boiler can finish the required heat request that adds of pyrolysis, safety performance is more guaranteed.(5), this device can reclaim high-pureness carbon dioxide and utilizes.(6), adopt recycle pump with boiler up and down the material of different positions carry out pump circulation, the material heating is more evenly, the heat energy utilization rate is higher.(7), the apparatus structure compactness, floor space is little.
(4), description of drawings
Fig. 1 is a structural representation of the present invention.
(5), embodiment
Further specify the present invention below in conjunction with drawings and Examples.
As shown in Figure 1, the present invention includes the pyrolytic tank 6 that has feeding tube 4 and tremie pipe 13.Also comprise boiler 2 and vacuum pump 12.Described boiler 2 is a normal-pressure boiler, comprises flame chamber and medium circulation chamber, and the fuel combustion in the flame chamber is provided for the heat energy of heating medium.Feeding tube 4 connects the medium circulation chamber of boiler 2.Tremie pipe 13 connects the medium circulation chamber of boiler 2 by the suspension separator 16 of band discharge nozzle 14.Described vacuum pump 12 is connected with gas-holder 8 by extraction pipe 9, and gas-holder 8 is connected with pyrolytic tank 6 with muffler 10 by vapor pipe 7.Also comprise and being used for to the take away pump 1 of the medium circulation chamber of boiler 2 conveying as the heavy magnesium water of material.
Two circulation tubes of recycle pump 3 are connected to the different heights position in the medium circulation chamber of boiler 2.The effect of recycle pump 3 is the materials in the pump circulation medium circulation chamber.
The Floating Ball Liquid Level valve 5 that is used to control feeding tube 4 break-makes is installed in the described pyrolytic tank 6.When liquid level reaches setting height in the pyrolytic tank 6,5 actions of Floating Ball Liquid Level valve, feeding tube 4 stops material loading.
Between extraction pipe 9 and vacuum pump 12, be connected with contact vacuum pressure gauge 11.The vacuum tightness that gas-holder 8 and pyrolytic tank 6 are consistent, when vacuum tightness reached set(ting)value in the gas-holder 8, contact vacuum pressure gauge 11 control vacuum pumps 12 quit work.
Be connected with discharging pump 15 between described tremie pipe 13 and the described suspension separator 16, be used for the material forced conveyance to suspension separator 16.
Heavy magnesium water is pumped into the medium circulation chamber of boiler 2 by take away pump 1, heat after feeding tube 4 enters in the pyrolytic tank 6, under discharging pump 15 effects, get back in the medium circulation chamber of boiler 2 again through suspension separator 16, said process circulates repeatedly, after the material pyrolysis is finished, take away pump 1 quits work, and emits Magnesium Carbonate Light 41-45 from the discharge nozzle of suspension separator 16.
Temperature requirement in the pyrolytic tank 6 is between 50～60 ℃, and pressure remains between 0.08～0.06MPa.
The carbonic acid gas that pyrolysis produces is extracted out recycling through gas-holder 8 by vacuum pump.
Claims (6)
1. the isolated plant of a continuously preparing light magnesium carbonate by low-pressure pyrolysis comprises the pyrolytic tank (6) that has feeding tube (4) and tremie pipe (13), it is characterized in that: also comprise boiler (2) and vacuum pump (12); Described feeding tube (4) connects the medium circulation chamber of boiler (2); Described tremie pipe (13) connects the medium circulation chamber of boiler (2) by the suspension separator (16) of band discharge nozzle (14); Described vacuum pump (12) is connected with gas-holder (8) by extraction pipe (9), and gas-holder (8) is connected with pyrolytic tank (6) with muffler (10) by vapor pipe (7).
2. the isolated plant of continuously preparing light magnesium carbonate by low-pressure pyrolysis as claimed in claim 1, it is characterized in that: also comprise recycle pump (3), its two circulation tubes are connected to the different heights position in the medium circulation chamber of boiler (2).
3. the isolated plant of continuously preparing light magnesium carbonate by low-pressure pyrolysis as claimed in claim 1 or 2 is characterized in that: the Floating Ball Liquid Level valve (5) that is used to control feeding tube (4) break-make is installed in the described pyrolytic tank (6).
4. the isolated plant of continuously preparing light magnesium carbonate by low-pressure pyrolysis as claimed in claim 1 or 2 is characterized in that: be connected with contact vacuum pressure gauge (11) between extraction pipe (9) and vacuum pump (12).
5. the isolated plant of continuously preparing light magnesium carbonate by low-pressure pyrolysis as claimed in claim 1 or 2 is characterized in that: also comprise being used for to the take away pump (1) of the medium circulation chamber of boiler (2) conveying as the heavy magnesium water of material.
6. the isolated plant of continuously preparing light magnesium carbonate by low-pressure pyrolysis as claimed in claim 1 or 2 is characterized in that: be connected with discharging pump (15) between described tremie pipe (13) and the described suspension separator (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101802066A CN101654264B (en) | 2009-10-09 | 2009-10-09 | Special device for continuously preparing light magnesium carbonate by low-pressure pyrolysis |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009101802066A CN101654264B (en) | 2009-10-09 | 2009-10-09 | Special device for continuously preparing light magnesium carbonate by low-pressure pyrolysis |
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| CN101654264A CN101654264A (en) | 2010-02-24 |
| CN101654264B true CN101654264B (en) | 2011-05-04 |
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| CN2009101802066A Expired - Fee Related CN101654264B (en) | 2009-10-09 | 2009-10-09 | Special device for continuously preparing light magnesium carbonate by low-pressure pyrolysis |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104891536B (en) * | 2015-06-26 | 2016-05-25 | 吉首大学 | A kind of pyrolysis heavy magnesium water is produced basic magnesium carbonate system |
| CN104941559B (en) * | 2015-06-29 | 2016-05-25 | 吉首大学 | The brush heavy magnesium water pyrolysis installation of liquefied gas hot-blast stove bistrichiasis |
| CN104891535B (en) * | 2015-06-29 | 2016-06-01 | 吉首大学 | Methyl alcohol hotblast stove heavy magnesium water pyrolysis installation |
| CN112973578A (en) * | 2021-03-16 | 2021-06-18 | 江西诺邦生物科技有限公司 | Disinfectant production is with low temperature dry distillation extraction element |
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| GB639408A (en) * | 1947-05-24 | 1950-06-28 | Frantisek Kopecky | A process and contrivance for the treatment of water for the feeding of steam boilers and the like |
| SU680998A1 (en) * | 1972-08-08 | 1979-08-25 | Предприятие П/Я А-3732 | Method of the preparation of magnesium oxide |
| CN87213168U (en) * | 1987-09-09 | 1988-06-22 | 赵悦 | Continous thermal decomposition device for light magnesium carbonate |
| CN2232913Y (en) * | 1995-03-27 | 1996-08-14 | 白添中 | N-type pyrolyzer for continuous prepn. of magnesium carbonate |
| CN1680192A (en) * | 2004-04-07 | 2005-10-12 | 田玉海 | Production of light magnesium carbonate or light magnesium oxide |
| CN1970451A (en) * | 2006-12-01 | 2007-05-30 | 河北科技大学 | Method for preparing alkaline type magnesium carbonate by low temperature pyrogenation of Mg(HCO3)2 water and coproducing magnesium silicate |
| CN201240857Y (en) * | 2008-07-01 | 2009-05-20 | 河北科技大学 | Low temperature pyrolysis reactor |
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2009
- 2009-10-09 CN CN2009101802066A patent/CN101654264B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB639408A (en) * | 1947-05-24 | 1950-06-28 | Frantisek Kopecky | A process and contrivance for the treatment of water for the feeding of steam boilers and the like |
| SU680998A1 (en) * | 1972-08-08 | 1979-08-25 | Предприятие П/Я А-3732 | Method of the preparation of magnesium oxide |
| CN87213168U (en) * | 1987-09-09 | 1988-06-22 | 赵悦 | Continous thermal decomposition device for light magnesium carbonate |
| CN2232913Y (en) * | 1995-03-27 | 1996-08-14 | 白添中 | N-type pyrolyzer for continuous prepn. of magnesium carbonate |
| CN1680192A (en) * | 2004-04-07 | 2005-10-12 | 田玉海 | Production of light magnesium carbonate or light magnesium oxide |
| CN1970451A (en) * | 2006-12-01 | 2007-05-30 | 河北科技大学 | Method for preparing alkaline type magnesium carbonate by low temperature pyrogenation of Mg(HCO3)2 water and coproducing magnesium silicate |
| CN201240857Y (en) * | 2008-07-01 | 2009-05-20 | 河北科技大学 | Low temperature pyrolysis reactor |
Non-Patent Citations (3)
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| 姜京哲，徐旺生，刘一鸣.白云石制备轻质碳酸镁节能设备分析.《辽宁化工》.2008,第37卷(第9期),全文. * |
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