CN102926260A - Liquid replacing system of replacing and cooking pot - Google Patents
Liquid replacing system of replacing and cooking pot Download PDFInfo
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- CN102926260A CN102926260A CN2012104890395A CN201210489039A CN102926260A CN 102926260 A CN102926260 A CN 102926260A CN 2012104890395 A CN2012104890395 A CN 2012104890395A CN 201210489039 A CN201210489039 A CN 201210489039A CN 102926260 A CN102926260 A CN 102926260A
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Abstract
The invention relates to a liquid replacing system of a replacing and cooking pot. The liquid replacing system is characterized in that a liquid outlet of a steam heater is communicated with an upper-part liquid inlet, a middle-part liquid inlet and a bottom-part liquid inlet respectively by a liquid inlet pipeline; a plurality of layers of coaxial ring-shaped filtering sieve plates close to the inner wall of the cooking pot are arranged in the middle of the cooking pot; a ring-shaped gap formed between all the ring-shaped filtering sieve plates and the inner wall of the cooking pot is uniformly divided into four areas; each area corresponds to one liquid outlet; the liquid outlets are communicated with a liquid inlet of a circulating pump by a liquid outlet pipeline; the liquid inlet of the circulating pump is also connected with a hot-black liquid replacing and distributing pipe, a warm-black filling and distributing pipe and a cold-black liquid replacing and distributing pipe; the liquid outlet pipeline is connected with a hot-black liquid replacing and returning pipe and a cold-black liquid replacing and returning pipe by a backflow liquid control valve; and a replacing-circulating-isolating valve is arranged between the backflow liquid control valve on a backflow main pipe and the circulating pump. The liquid replacing system has the advantages that the normal circulatory heating of large-liquid-ratio cooking liquid can be realized, and simultaneously, fast switching between replacement and cooling is realized.
Description
Technical field
The present invention relates to the paper making equipment field, particularly a kind of displacement cooking pot liquid displacement system.
Background technology
At present, replacing and digesting technoloy becomes better and approaching perfection day by day in field of papermaking.But existing replacing and digesting technoloy is only used comparatively ripe in the wood type raw material, then still can't effectively utilize for the grass raw material.Still there are problems, can't large-scale production.1, existing displacement cooking pot system adopts the digester bottom liquid inlet mostly usually, the displacement format of top fluid, and there is the not good enough problem of cooking liquor distributing homogeneity in it; 2, because the tablet of grass raw material is less, softening too early in the boiling temperature-rise period, cause bulk density to increase, filtration resistance increases, and is difficult for accomplishing that evenly displacement heats up, and, because dress pot density unevenness, in replacement process, cooking liquor can be short-circuited in the density lower, cause material temperature uneven, affect final displacement cooking quality.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of and can realize boiling, replace quick handover operation, but the displacement cooking pot liquid displacement system of simultaneously Effective Raise displacement and cycle balance.
The present invention solves its technical problem and is achieved through the following technical solutions:
A kind of displacement cooking pot liquid displacement system, comprise digester, circulating pump and steam heater, the liquid outlet of circulating pump connects the inlet of steam heater, it is characterized in that: the inlet of described digester is made of top inlet, middle part inlet and bottom liquid inlet mouth, and the liquid outlet of steam heater is communicated with top inlet, middle part inlet and bottom liquid inlet mouth respectively by the feed liquor pipeline; It is coaxial and press close to the annular filter sieve plate of digester inwall that middle part in digester is provided with multilayer, form annular space between each annular filter sieve plate and the digester inwall and evenly be separated into four zones by dividing plate, set liquid outlet on the equal corresponding digester in each zone, this liquid outlet all is communicated with the inlet of circulating pump by the fluid pipeline; The inlet of circulating pump also connects hot black liquor displacement distributing pipe, warm black liquor is filled distributing pipe and cold black liquid displacement distributing pipe; Be connected with hot black liquor displacement return duct and the connection of cold black liquid displacement return duct at the fluid pipeline by the phegma control valve, the replacement cycles isolating valve is being set between phegma control valve and the circulating pump on the return header.
And distributing pipe filled by described hot black liquor displacement distributing pipe, warm black liquor and cold black liquid displacement distributing pipe is provided with control valve.
And described each liquid outlet divides pipeline to be connected with described fluid pipeline by fluid, divides in each fluid a control valve all is installed on the pipeline.
And described top inlet is four uniform top inlets.
And described middle part inlet is communicated with a middle part feed tube, and the outlet correspondence of this middle part feed tube is positioned at above-mentioned multi-layer annular and filters sieve plate.
Advantage of the present invention and beneficial effect are:
1, displacement cooking pot liquid displacement system of the present invention by the replacement cycles isolating valve is set at return line, can be realized the quick switching of replacement operator and boiling operation in the native system, and is easy and simple to handle, efficiently convenient.
2, displacement cooking pot liquid displacement system of the present invention adopts simultaneously feed liquor of three positions, upper, middle and lower, and the liquid-circulating substitute mode of middle part fluid guarantees the uniformity of liquid in digester, thereby guarantees the uniformity of heating and reaction.
3, displacement cooking pot liquid displacement system of the present invention, each filters sieve plate and also is divided into four filtration zones, makes the circulation cooking liquor by liquid outlet filtering corresponding to each layer annular filter sieve plate, capable of preventing short circuit situation, the flow uniformity of assurance cooking liquor.
4, displacement cooking pot liquid displacement system of the present invention all connects a control valve on the circulation line that each liquid outlet connects.Can by the cooking liquor temperature of each liquid outlet careful judge boiling and the inhomogeneous place of circulation, when producing bias current, replacement fluid in time adjusts the flow of each isolated area by this control valve, guarantee the kettle temperature uniformity, realize cooking homogeneities, overcome the uneven problem of displacement.
5, scientific structure design of the present invention is reasonable, can realize the cooking liquor normal circulation heating of large liquor ratio in the pot, realize simultaneously the quick switching of replacement operator and boiling operation, have simple to operate, outstanding advantages easy to use is a kind of digester replacement cycles system with higher innovation.
Description of drawings
Fig. 1 is schematic flow sheet of the present invention;
Fig. 2 is that the A-A of Fig. 1 is to view.
Description of reference numerals:
1-top inlet, 2-top circulation line, 3-middle part inlet, 4-middle part circulation pipe, the 5-liquid outlet, the 6-control valve, 7-bottom liquid inlet mouth, 8-bottom cycle pipe, 9-is put a pot pump, 10-paper pulp is sent pipe, 11-middle part feed tube, 12-annular filter sieve plate, the 13-digester, 14-fluid circulation house steward, 15-replacement cycles isolating valve, the 16-circulating pump, the 17-steam heater, the external steam pipe of 18-, 19-hot black liquor displacement return duct, 20-cold black liquid displacement return duct, 21-phegma control valve, 22-cold black liquid control valve, 23-temperature black liquor control valve, 24-hot black liquor control valve, 25-hot black liquor displacement distributing pipe, 26-temperature black liquor is filled distributing pipe, 27-cold black liquid displacement distributing pipe, the 28-dividing plate.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing, and following examples are descriptive, is not determinate, can not limit protection scope of the present invention with this.
A kind of displacement cooking pot liquid displacement system, comprise digester 13, circulating pump 16 and steam heater 17, digester is provided with liquid outlet and inlet, and the inlet of the liquid outlet of digester, circulating pump, steam heater and digester is communicated with by the circulation line circulation.Steam heater is connected with external steam pipe 18.Innovation of the present invention is: the inlet of described digester is made of top inlet 1, middle part inlet 3 and bottom liquid inlet mouth 7, and the top inlet is four uniform top inlets.The liquid outlet of steam heater is communicated with top inlet, middle part inlet and bottom liquid inlet mouth respectively by top circulation line 2, middle part circulation pipe 4, bottom cycle pipe 8 respectively.It is coaxial and press close to the annular filter sieve plate 12 of digester inwall that middle part in digester is provided with multilayer, form annular space between each annular filter sieve plate and the digester inwall and evenly be separated into four zones by dividing plate 28, each zone is set liquid outlet 5 on corresponding digester all, and this liquid outlet all gathers to fluid circulation house steward 14 by the fluid loop branch pipe and is communicated with the inlet of circulating pump.The middle part inlet is communicated with a middle part feed tube 11, and the outlet correspondence of this middle part feed tube is positioned at above-mentioned multi-layer annular and filters sieve plate.
The inlet of circulating pump also connects hot black liquor displacement distributing pipe 25, warm black liquor is filled distributing pipe 26 and cold black liquid displacement distributing pipe 27; Distributing pipe filled by hot black liquor displacement distributing pipe, warm black liquor and cold black liquid displacement distributing pipe is respectively arranged with hot black liquor control valve 24, warm black liquor control valve 23, cold black liquid control valve 22.Be connected with hot black liquor displacement return duct 19 and 20 connections of cold black liquid displacement return duct at the fluid pipeline by phegma control valve 21, replacement cycles isolating valve 15 is being set between phegma control valve and the circulating pump on the return header.
All connect a control valve 6 on the fluid loop branch pipe that each liquid outlet connects.Pot pump 9 is put in the bottom installation of pot body and paper pulp is sent pipe 10.
The operation principle of this displacement cooking pot liquid displacement system exchange system is:
Close replacement cycles isolating valve 15, open phegma control valve 21, system enters replacement operator, cooking liquor is filled distributing pipe 26 or cold black liquid displacement distributing pipe 27 by hot black liquor displacement distributing pipe 25 or warm black liquor and is entered steam heater by circulating pump, enter digester inside by top circulation line 2, middle part circulation pipe 4, bottom cycle pipe 8 respectively again, the liquid after the displacement is discharged by liquid outlet and is reclaimed through hot black liquor displacement return duct 19 or cold black liquid displacement return duct 20.
After opening replacement cycles isolating valve 15, closing volume hydraulic control valve 21, system enters cycling, and after circulating pump and steam heater intensification, recirculation is back to digester inside, realizes circulation from the inner liquid of discharging of digester.
Although for the purpose of illustration disclosed embodiments of the invention and accompanying drawing, but it will be appreciated by those skilled in the art that, in the spirit and scope that do not break away from the present invention and claims, various replacements, variation and modification all are possible, and therefore scope of the present invention is not limited to embodiment and the disclosed content of accompanying drawing.
Claims (5)
1. displacement cooking pot liquid displacement system, comprise digester, circulating pump and steam heater, the liquid outlet of circulating pump connects the inlet of steam heater, it is characterized in that: the liquid outlet of steam heater is communicated with top inlet, middle part inlet and the bottom liquid inlet mouth of digester respectively by the feed liquor pipeline; It is coaxial and press close to the annular filter sieve plate of digester inwall that middle part in digester is provided with multilayer, form annular space between each annular filter sieve plate and the digester inwall and evenly be separated into four zones by dividing plate, set liquid outlet on the equal corresponding digester in each zone, this liquid outlet all is communicated with the inlet of circulating pump by the fluid pipeline; The inlet of circulating pump also connects hot black liquor displacement distributing pipe, warm black liquor is filled distributing pipe and cold black liquid displacement distributing pipe; Be connected with hot black liquor displacement return duct and the connection of cold black liquid displacement return duct at the fluid pipeline by the phegma control valve, the replacement cycles isolating valve is being set between phegma control valve and the circulating pump on the return header.
2. displacement cooking pot liquid displacement system according to claim 1 is characterized in that: distributing pipe filled by described hot black liquor displacement distributing pipe, warm black liquor and cold black liquid displacement distributing pipe is provided with control valve.
3. displacement cooking pot liquid displacement system according to claim 1, it is characterized in that: described each liquid outlet divides pipeline to be connected with described fluid pipeline by fluid, divides in each fluid a control valve all is installed on the pipeline.
4. displacement cooking pot liquid displacement system according to claim 1, it is characterized in that: described top inlet is four uniform top inlets.
5. displacement cooking pot liquid displacement system according to claim 1, it is characterized in that: described middle part inlet is communicated with a middle part feed tube, and the outlet correspondence of this middle part feed tube is positioned at above-mentioned multi-layer annular and filters sieve plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104890395A CN102926260A (en) | 2012-11-26 | 2012-11-26 | Liquid replacing system of replacing and cooking pot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104890395A CN102926260A (en) | 2012-11-26 | 2012-11-26 | Liquid replacing system of replacing and cooking pot |
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| CN102926260A true CN102926260A (en) | 2013-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012104890395A Pending CN102926260A (en) | 2012-11-26 | 2012-11-26 | Liquid replacing system of replacing and cooking pot |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5059284A (en) * | 1989-10-30 | 1991-10-22 | Beloit Corporation | Apparatus to displace a digester from both ends |
| CN101748635A (en) * | 2010-03-18 | 2010-06-23 | 白雪刚 | Method for preparing slurry by replacement cooking |
| CN201901800U (en) * | 2010-11-10 | 2011-07-20 | 天津市恒脉机电科技有限公司 | Direct steam heater for cooking pot |
| CN102154874A (en) * | 2011-04-29 | 2011-08-17 | 白福安 | Replacement cooking pulping method |
| CN102337689A (en) * | 2011-09-30 | 2012-02-01 | 重庆理文造纸有限公司 | Stewing method for preparing bamboo wood dissolving pulp |
| CN202450365U (en) * | 2011-12-30 | 2012-09-26 | 新疆博湖苇业股份有限公司 | Grass raw material replacement cooker |
-
2012
- 2012-11-26 CN CN2012104890395A patent/CN102926260A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5059284A (en) * | 1989-10-30 | 1991-10-22 | Beloit Corporation | Apparatus to displace a digester from both ends |
| CN101748635A (en) * | 2010-03-18 | 2010-06-23 | 白雪刚 | Method for preparing slurry by replacement cooking |
| CN201901800U (en) * | 2010-11-10 | 2011-07-20 | 天津市恒脉机电科技有限公司 | Direct steam heater for cooking pot |
| CN102154874A (en) * | 2011-04-29 | 2011-08-17 | 白福安 | Replacement cooking pulping method |
| CN102337689A (en) * | 2011-09-30 | 2012-02-01 | 重庆理文造纸有限公司 | Stewing method for preparing bamboo wood dissolving pulp |
| CN202450365U (en) * | 2011-12-30 | 2012-09-26 | 新疆博湖苇业股份有限公司 | Grass raw material replacement cooker |
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Application publication date: 20130213 |