CN201125167Y - Ore pulp direct heating apparatus - Google Patents
Ore pulp direct heating apparatus Download PDFInfo
- Publication number
- CN201125167Y CN201125167Y CNU2007200156960U CN200720015696U CN201125167Y CN 201125167 Y CN201125167 Y CN 201125167Y CN U2007200156960 U CNU2007200156960 U CN U2007200156960U CN 200720015696 U CN200720015696 U CN 200720015696U CN 201125167 Y CN201125167 Y CN 201125167Y
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- direct heating
- ore pulp
- steam
- digester
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Abstract
The utility model discloses a device for directly heating ore pulp, and relates particularly to a device for directly heating bauxite ore pulp in autoclave digestion procedure during the process of alumina production. The device is formed by combining a direct heating digester, a steam buffer, a temperature detection control device, etc. The device with simple structure can not only make the most of steam heat, improve heat utilization rate, and save equipment investment, but also ensure that bauxite dissolves at the best dissolving temperature all the time. Furthermore, the whole procedure is continuous, automatic, safe, and stable operation, thus having great significance in reducing energy consumption, saving energy, as well as improving the economic benefits, the productivity and the automation level of the whole factory.
Description
Technical field
The utility model relates to a kind of ore pulp direct heating equipment, relates in particular to and presses the bauxitic clay ore pulp direct heating equipment of stripping operation that boils in a kind of aluminum oxide production process.
Background technology
Generally in the existing alumina producer adopt the indirect heating mode to add hot pressing to boil ore pulp in the stripping operation, water of condensation need utilize the equipment revaporization to make full use of steam heat after adopting the steam indirect heating, and the digester of indirect heating ore pulp need adopt special stirring to prevent the solid particulate deposition.But along with the development of novel process, new technology, ore pulp also adopts the direct heating mode to heat.Direct heating can utilize the heat of steam fully, the heat utilization efficiency height, and the influence that heats is not scabbed by slip, and do not need water of condensation self-evaporatint n. system, the direct heating digester does not need whipping appts yet.Heating medium generally all is saturated or superheated steam, for example adopts and adopts superheated vapour direct heating pressure to boil the mixed ore pulp of stripping operation in the double stream process stripping diaspore technology.Because the stripping temperature of diaspore is than higher, generally all surpass 260 ℃, so using the steam direct heating under the high-temperature, this pressure that needs steam is at least greater than the saturated vapor pressure of 260 ℃ of following sodium aluminate solutions, therefore how under High Temperature High Pressure, to use steam safely, make full use of steam heat, prevent that the ore pulp adverse current from returning steam boiler, can guarantee that again bauxite is in best stripping temperature, make whole process continuous, automatically, safe and stable operation is to cut down the consumption of energy in the alumina producing, save energy, improve operation factor, important measures of increasing economic efficiency.
The utility model content
For solving the problems of the technologies described above a kind of ore pulp direct heating equipment that the utility model provides, purpose is directly to utilize steam heating bauxitic clay ore pulp, make it to reach best stripping temperature, whole process can guarantee to utilize fully steam heat, can guarantee continuous, automatic, safe and stable operation again, thereby the minimizing facility investment cuts down the consumption of energy, save energy, increases economic efficiency.
For reaching above-mentioned purpose, the utility model is achieved in that a kind of ore pulp direct heating equipment, is made of following part: the direct heating digester, ore pulp is transported to the ore slurry pipeline of direct heating digester, delivers a vapor to the steam-pipe of direct heating digester.
The top of described direct heating digester is provided with safety valve and discharge device.
Described steam-pipe be communicated with the direct heating digester again after the steam buffer device is communicated with.
The top of described steam buffer device is provided with safety valve and discharge device.
Be provided with vacuum breaker between described steam buffer device and the direct heating digester.
Described vacuum breaker is located at the steam inlet place of direct heating digester.
Be connected in series by pipeline between the described direct heating digester.
Pipeline between the described adjacent direct heating digester is communicated with steam-pipe.
Be connected with temp detecting controller between pipeline between the described adjacent direct heating digester and the steam-pipe.
Shunting device is connected with described steam buffer device by vapour pipe.
The bottom of described steam buffer device is provided with trap.
Advantage of the present utility model and effect are as follows:
The utility model adopts steam direct heating ore pulp, can either utilize steam heat fully, improve heat utilization efficiency, save facility investment, save and stir electric energy, be engraved in stripping under the best stripping temperature in the time of bauxite can being guaranteed again, and whole process is continuously, automatically, safety, steady running, this is to reducing investment outlay, and cuts down the consumption of energy, save energy, increases economic efficiency, raises labour productivity and the whole factory automation level has very important meaning.
Description of drawings
Fig. 1 is the utility model ore pulp direct heating device structure synoptic diagram.
In the accompanying drawing: 1, be heated ore pulp; 2, direct heating digester; 3, safety valve; 4, discharge device; 5, steam; 6, shunting device; 7, steam buffer device; 8, vacuum breaker; 9, temp detecting controller; 10, trap.
Embodiment
Embodiment to utility model is described in detail in conjunction with the accompanying drawings below, but protection domain of the present utility model is not limit by embodiment.
As shown in Figure 1, ore pulp direct heating equipment of the present utility model, be made of following part: it is connected in series by many direct heating digesters 2, be connected in series by being heated the ore pulp transport pipe between adjacent two direct heating digesters 2, every direct heating digester 2 is connected with steam buffer device 7 by steam conveying pipe, direct heating digester 2 is connected with temp detecting controller 9 with vacuum breaker 8, temp detecting controller 9 is connected with steam-pipe with pipeline between the direct heating digester 2, shunting device 6 is connected with steam buffer device 7 by vapour pipe, pipeline and 7 vibrations of steam buffer device when shunting device 6 is used to reduce to drive.
The direct heating method of ore pulp heating installation of the present utility model, comprise the steps: heated ore pulp 1 is input in the first step direct heating digester 2 by ore slurry pipeline, flow out from last step direct heating digester 2, steam 5 is input to by steam-pipe enters again behind the steam buffer device 7 in each direct heating digester 2 and ore pulp Hybrid Heating ore pulp, steam 5 enters direct heating digester 2 from the bottom, can play the effect of stirring ore pulp like this, pass through safety valve 3 pressure releases when the pressure in the direct heating digester 2 surpasses operating pressure, and the material that pressure release is discharged is discharged to trench by discharge device 4; Ore pulp and steam in the direct heating digester 2 enter in the next stage direct heating digester by pipeline.
Two adjacent direct heating digester 2 pipelines of above-mentioned connection and the temp detecting controller 9 that enters between direct heating digester 2 steam-pipes detect temperature in the pipeline, when the temperature of the discharging of direct heating digester in pipeline is lower than set(ting)value, increase the amount that steam enters into the direct heating digester.
When the pressure in the steam buffer device 7 surpasses operating pressure, pass through safety valve 3 pressure releases, and the steam that pressure release is discharged is discharged to trench by discharge device 4.
Claims (11)
1, a kind of ore pulp direct heating equipment is characterized in that being made of following part: the direct heating digester, with ore pulp be transported to the direct heating digester ore slurry pipeline, deliver a vapor to the steam-pipe of direct heating digester.
2, a kind of ore pulp direct heating equipment according to claim 1 is characterized in that the top of described direct heating digester is provided with safety valve and discharge device.
3, a kind of ore pulp direct heating equipment according to claim 1 is communicated with the direct heating digester after it is characterized in that described steam-pipe and the steam buffer device being communicated with again.
4, a kind of ore pulp direct heating equipment according to claim 3 is characterized in that the top of described steam buffer device is provided with safety valve and discharge device.
5, a kind of ore pulp direct heating equipment according to claim 3 is characterized in that being provided with vacuum breaker between described steam buffer device and the direct heating digester.
6, a kind of ore pulp direct heating equipment according to claim 5 is characterized in that described vacuum breaker is located at the steam inlet place of direct heating digester.
7, a kind of ore pulp direct heating equipment according to claim 1 is characterized in that being connected in series by pipeline between the described direct heating digester.
8, a kind of ore pulp direct heating equipment according to claim 7 is characterized in that the pipeline between the described adjacent direct heating digester is communicated with steam-pipe.
9, a kind of ore pulp direct heating equipment according to claim 8 is characterized in that being connected with temp detecting controller between pipeline between the described adjacent direct heating digester and the steam-pipe.
10, a kind of ore pulp direct heating equipment according to claim 1 is characterized in that shunting device is connected with steam buffer device 7 by vapour pipe.
11, according to claim 3,4,5 or 10 described a kind of ore pulp direct heating equipment, it is characterized in that the bottom of described steam buffer device is provided with trap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200156960U CN201125167Y (en) | 2007-11-06 | 2007-11-06 | Ore pulp direct heating apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200156960U CN201125167Y (en) | 2007-11-06 | 2007-11-06 | Ore pulp direct heating apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201125167Y true CN201125167Y (en) | 2008-10-01 |
Family
ID=39998585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200156960U Expired - Lifetime CN201125167Y (en) | 2007-11-06 | 2007-11-06 | Ore pulp direct heating apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201125167Y (en) |
-
2007
- 2007-11-06 CN CNU2007200156960U patent/CN201125167Y/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHENYANG ALUMINUM + MAGNESIUM ENGINEERING + RESEAR Free format text: FORMER NAME: SHENYANG ALUMINIUM AND MAGNESIUM DESIGN INST. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 110001 Heping Street, Heping District, Liaoning, Shenyang, No. 184 Patentee after: Shenyang Aluminum & Magnesium Engineering & Research Institute Co., Ltd. Address before: 110001 Heping Street, Heping District, Liaoning, Shenyang, No. 184 Patentee before: Shenyang Aluminium and Magnesium Design Institute |
|
| CX01 | Expiry of patent term |
Granted publication date: 20081001 |