CN87204055U - Recoverable device of waste-steam - Google Patents

Recoverable device of waste-steam Download PDF

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Publication number
CN87204055U
CN87204055U CN198787204055U CN87204055U CN87204055U CN 87204055 U CN87204055 U CN 87204055U CN 198787204055 U CN198787204055 U CN 198787204055U CN 87204055 U CN87204055 U CN 87204055U CN 87204055 U CN87204055 U CN 87204055U
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CN
China
Prior art keywords
steam
waste
heat exchanger
accelerating tube
recycling
Prior art date
Application number
CN198787204055U
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Chinese (zh)
Inventor
徐建华
Original Assignee
湖南省南县造纸厂
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Publication date
Application filed by 湖南省南县造纸厂 filed Critical 湖南省南县造纸厂
Priority to CN198787204055U priority Critical patent/CN87204055U/en
Publication of CN87204055U publication Critical patent/CN87204055U/en

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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Abstract

The utility model discloses a recoverable device of waste-steam, relating to the treatment of pulping waste-steam and the heat recovery of waste gas. The recoverable device of waste-steam is composed of a spherical digester, a heat exchanger, a black liquor reactor, a steam energy recoverer, a pneumatic executor, a steam phase column spinner used for the secondary steaming utilization of waste-steam, a heat energy recovery groove with a steam distribution chamber, etc. A radial injection pipe and a one-way valve are arranged in the spherical digester, and the larger end part of the accelerating tube of the heat exchanger is provided with a positoning ring which is horizontally arranged in the heat energy recovery groove. When the device is used for recovering waste-steam, waste-steam can be fully recovered even if more than two spherical digesters operate simultaneously, the exhaust time can be shortened 1 / 3-1 / 2, heat energy can be utilized completely, and odor pollution can be eliminated.

Description

Recoverable device of waste-steam

Recycling of waste steam cooking equipment relates to the processing of slurrying waste vapour and the recovery of waste-gas heat.

The digesting apparatus that the medium and small paper plant of China soda pulping process adopts is generally rotary spherical digester, and boiling ends then to adopt towards the method for sky steam bleeding and reduces the ball internal pressure to guarantee to put safely pot (an opening discharging).The ball internal pressure was generally 6~6.5kg/cm when boiling finished 2, temperature is 160~170 ℃, also contains the CH of some in the boiling waste vapour 3SH, H 2Therefore the toxic gas of stenches such as S adopts the method towards the sky steam bleeding, not only long because of the required time of emptying, directly influences rotary spherical digester output, and has wasted the energy, has more seriously polluted environment.Domestic some paper plant mainly is that the boiling waste vapour is imported preheating cooking liquor in the alkali lye to this improvement of being done towards sky steam bleeding method at present, adopt noiseless heater to reclaim the boiling waste vapour as Xinjiang factory, heater vertically is installed on alkali-prepared tank central authorities and all immerses in the soup, heat energy in the waste vapour constantly is discharged in the soup, until soup reach temperature required till.Hunan factory is provided with multihole nozzle or injector with the importing of boiling waste vapour and contains in the recycling bin of clear water, utilizes the heat of waste vapour to make the inner bucket water temperature rise, uses this hot water dissolving's solid caustic soda or dosing alkali etc. again.But all exist the steam discharge time long, waste vapour can not drain, because the heat energy that the required heat of preheating boiling includes less than the boiling waste vapour, so the not all utilizations of the heat energy of boiling waste vapour, when while of the rotary spherical digester more than two or continuous steam discharge, also " vapour locking " can take place in same being subjected to the vapour source, still need a part of waste vapour emptying, like this, both influenced recovering effect, the pollution problem of toxic gas is not basic yet to solve.

The utility model is intended to solve whole recovery of boiling waste vapour, the utilization fully of heat energy and the thorough elimination problem of toxic gas.

The technical scheme that realizes above-mentioned purpose is: recycling of waste steam cooking equipment is by the general energy recover (7) of rotary spherical digester (16), heat exchanger (10), black liquor reactor (12), and alternate run in parallel with heat exchanger, automatically the general pneumatic actuator (6) that can recover of control, with the boiling waste vapour of a rotary spherical digester import another rotary spherical digester do the vapour phase metaideophone (4) of secondary boiled utilization and receiving heat-exchanger, general can recover and join heat energy reclaiming groove several main parts such as (9) composition of steam chest (11).The radial spray pipe (3) that axial playpipe (13) is arranged in the rotary spherical digester spheroid, do not link up mutually with axial playpipe, dish is to bend pipe (14), filter bowl (15), emptier (1) and be located at the check valve (2) of dish to bend pipe and radial spray pipe junction, the filter bowl of umbilical region is an ellipse garden shape in the ball, it connects for floating between bend pipe with dish, the filter bowl bottom is provided with base plate, and the gross area of filter opening is for coiling to more than 5 times of bend pipe cross-sectional area on the filter bowl; Heat exchanger is by accelerating tube (31), rectifying tube (30), and anemostat (29) is formed, a centring ring (26) is established in the big end of accelerating tube, this centring ring and accelerating tube flange (25) are combined as a whole, accelerating tube length is more than 1 times of return passage (32) length, return port (27) gross area is that accelerating tube is big, 2.5~3.5 times of small end average cross-section, adopt the form assembling of interference fits between the inner tubal wall of centring ring and return passage upper flange (33), joining of heat energy reclaiming groove has the steam distributing pipe group (36) of waste vapour being distinguished delivery heat exchanger and general energy recover in the steam chest, steam transmitting pipe joint (35) and control valve (37), the heat exchanger level places heat energy reclaiming groove, on the cell wall of the nearly anemostat port of export one side an arc flow guiding screen (8) is set, accelerating tube in the black liquor reactor (18) gos deep in the tube chamber of trunnion (24), deep part is about 0.5~1 times of accelerating tube end diameter, trunnion is to adopt not only acid and alkali-resistance but also to be that the bigger material of thermal coefficient of expansion is advisable, the structure and the black liquor reactor of general energy recover are basic identical, the arm (34) that supplies suction alkali lye to use promptly is equivalent to aid distributing pipe (20) structure in the black liquor reactor, vapour phase metaideophone (4) is a four way cock, or set up a three-way cock that imports Boiler Steam, finishing of vapour phase metaideophone by four way cock, dish is to bend pipe, several parts such as check valve and radial spray pipe are born, and the cam in the pneumatic actuator must use in upset.

Be described in further detail the concrete structure and the using method of recycling of waste steam cooking equipment below.

Set up the radial spray pipe in the rotary spherical digester spheroid of the present utility model, it is fixed on the axial playpipe by Ω shape joint, but do not link up mutually with axial playpipe, the radial spray pipe links to each other with bend pipe by check valve, when the outside steam discharge of rotary spherical digester, because the suction power that pressure differential produced of dish in bend pipe and rotary spherical digester spheroid makes closed check valve, radial tubes is ended; When the high pressure waste vapour of another rotary spherical digester when spurting spindle nose to this rotary spherical digester steam supply, the high pressure steam flow is washed check valve through dish open to bend pipe, waste vapour sprays in the spheroid by radial spray pipe and filter bowl, with heating tablet and cooking liquor.Some suspended materials and the small cellulose carried secretly in the boiling waste vapour, because of the radial spray pipe is around the widely different commentaries on classics of axle with spheroid, the upper and lower tumbling motion of solid matter in the vapour phase, be difficult to be fixedly attached to a certain position, thereby can prevent from effectively to stop up, just in case obstruction appears in the radial spray pipe, because it is with axially playpipe is not connected, therefore can not influence Boiler Steam and import, unlikelyly influence production from axial playpipe.If the vapour phase metaideophone (4) at four way cock locates to connect a three-way cock again, Boiler Steam is imported, making the radial spray pipe participate in boiling heats up, favourable to shortening time and raising stock quality, the filter bowl bottom is provided with base plate, forms the filtering area of a sealing, filter bowl is an ellipse garden shape, to realize filter bowl and the unsteady connection of dish between bend pipe, unsteady connection is convenient disassembly not only, and can reduce vibration and prevent that slurry from running outward; Original emptier and other structure are respectively established one's own system on the spheroid, and when other structure broke down, former emptier still can operate as normal and do not influenced production.

Because this equipment imports the boiling waste vapour in the alkali lye, like this, the resistance that is subjected to the liquid phase steam discharge is greater than the resistance that is subjected to atmospheric steam exhaust, therefore handwheel shape flange cancellation original in the heat exchanger, use general flange instead, can reduce the flow resistance of liquid, the big end of accelerating tube has added the centring ring (26) of a suitable thickness, this centring ring and accelerating tube flange (25) are combined as a whole, and adopt the form assembling of interference fits with the inner tubal wall of return passage upper flange (33), both can compensate the intensity of accelerating tube, can eliminate the fluid resistance of heat exchanger inside again, the heat exchanger level places heat energy reclaiming groove, and the fluid pressure that bear at its each position is more even, liquid backflow energy consumption is little, and can shorten the steam discharge time and the low pressure waste vapour is effluxed smoothly.The general of and alternate run in parallel with heat exchanger can recover, and it mainly acts on is to reclaim general vapour, and the compensation heat exchanger reclaims the function of low pressure waste vapour, to shorten the steam discharge time; Its structure and black liquor reactor are basic identical, because it is low to enter the general steam pressure of general energy recover, in order to improve negative pressure, should shorten distance from feed tube to anemostat, can improve liquid level in case of necessity, but the highest liquid level must be lower than feed tube, out of control to prevent hydraulic fluid generation siphonage; General energy recover puts into operation and is regulated by pneumatic actuator (6), cam in the pneumatic actuator must use in upset, when waste vapour pressure is higher than when appraising and deciding pressure, valve (37) is closed, waste vapour discharges by heat exchanger, when waste vapour pressure is lower than when appraising and deciding pressure, valve (37) is opened, general can putting into operation by recover.

The black liquor reactor is to have done suitable improvement on 85202201 patented technology bases, wherein the accelerating tube small end gos deep in the trunnion tube chamber, deep part is about 0.5~1 times of accelerating tube end diameter, from the black liquor of feed tube by the negative pressure suction, can change the vapour-liquid ratio of regulating automatically with waste vapour pressure, the little liquid of vapour is few, and the whole liquid of vapour ends, trunnion adopts not only acid and alkali-resistance but also is bigger material of thermal coefficient of expansion such as polytetrafluoroethylene (PTFE), with compensation sealing; Boiling waste vapour pressure is big, and the black liquor reactor can adopt secondary wind type or three air intakes, and to increase the inlet of flue gas, wherein the accelerating tube outside diameter equals dish to the bend pipe diameter, and end diameter equals the outlet diameter of emptier (1).

Heat energy reclaiming groove is divided into joins steam chest (11) and accumulator tank (9) two parts, join the steam distributing pipe group (36) that the boiling waste vapour is imported heat exchanger and general energy recover is respectively arranged in the steam chest, steam transmitting pipe joint (35) and control valve (37), accumulator tank part receiving heat-exchanger and general energy recover, on the bottom land of heat exchanger rectifying tube (30) bottom, establish the vibration reduction and cushioning seat (38) of a spring structure, with the radial pressure and the steady working condition of support heat exchanger, the flow guiding screen (8) that is provided with on the cell wall of the nearly anemostat port of export refluxes in order to guiding and acceleration liquid and alleviates the impact of high-velocity fluid to cell wall.

This equipment is applicable to single ball operation or the operation of many balls, when single ball boiling finishes steam bleeding, waste vapour is through coiling to bend pipe, control valve, buffer (5), enter heat exchanger from steam distributing pipe group (36), waste vapour is through the accelerating tube of over-heat-exchanger, with higher flow velocity ejection, under the effect of flow guiding screen, produce and reflux, the fluid-mixing that refluxes produces negative pressure because of the jet-action of high-velocity fluid in the heat exchanger, it is sucked from return port (27), after high-velocity fluid replenishes portion of energy,, circulate and so forth again from the anemostat ejection, the repeatedly backflow of vapour-liquid fluid-mixing, vapour-liquid is mixed, and heat exchange is rapid, when waste vapour (is generally 0.5~2kg/cm when heat exchanger is released into certain pressure in liquid 2), pneumatic actuator breakdown control valve (37) makes general can putting into operation by recover, and the alkali lye in the heat energy reclaiming groove is sucked through arm (34), gets back to again in the groove after general vapour heating, to improve alkali liquid temperature.

When the equipment that use the utility model proposes is realized many rotary spherical digester connection ball operations, as two above rotary spherical digesters steam bleeding simultaneously or in succession, first rotary spherical digester be not when the heat exchanger exhaust waste steam finishes as yet, the waste vapour of second rotary spherical digester can be imported the black liquor reactor, both can react with black liquor, in and toxic gas, can handle black liquor again, also can prevent vapour road " vapour locking ", if a rotary spherical digester steam discharge is arranged simultaneously, when another rotary spherical digester need heat up, can open vapour phase metaideophone (4) cock, the boiling waste vapour is passed through dish to bend pipe, check valve, radial spray pipe and filter bowl import in another rotary spherical digester, with heating raw and soup, behind the vapour phase metaideophone, the ball internal pressure generally still has 2~3kg/cm 2, still can pass through heat exchanger, general energy recover or black liquor reactor continue discharging, put the requirement of pot up to reaching safety.If connect a three-way cock again in cock place of vapour phase metaideophone, Boiler Steam is imported, from axial and radial spray pipe admission simultaneously, very favourable to shortening the heating-up time and improving stock quality.

The equipment that use the utility model proposes, two above rotary spherical digesters were moved simultaneously, waste vapour is all reclaimed, do not need towards the sky steam bleeding, and the steam discharge time ratio shortens about 1/3~1/2 towards the sky steam bleeding, heat energy utilizes fully, and the toxic gas of stench pollutes basic the elimination, but still has a spot of thorough improvement that is difficult to the stink substance of alkaline reaction to remain further research.

Description of drawings:

Fig. 1, the recycling of waste steam cooking equipment overall diagram

1, emptier; 2, check valve;

3, radial spray pipe; 4, vapour phase metaideophone;

5, buffer; 6, steam-operating actuator;

7, general energy recover; 8, flow guiding screen;

9, heat energy reclaiming groove; 10, heat exchanger;

11, join steam chest; 12, black liquor reactor;

13, axial playpipe; 14, dish is to bend pipe;

15, filter bowl; 16, rotary spherical digester;

17, steam pipe;

Fig. 2, rotary spherical digester primary structure figure

Fig. 3, black liquor structure of reactor figure

18, accelerating tube; 19, feed tube;

20, aid distributing pipe; 21, anemostat;

22, rectifying tube; 23, distribution plenum;

24, trunnion;

Fig. 4, heat converter structure figure

25, accelerating tube flange; 26, centring ring;

27, return port; 28, turbulence chamber;

29, anemostat; 30, rectification chamber;

31, accelerating tube; 32, return passage;

33, return passage upper flange;

Fig. 5, general energy recover structure chart

34, arm;

Fig. 6, the heat energy reclaiming groove structure chart

35, steam transmitting pipe joint; 36, steam distributing pipe group;

37, control valve; 38, buffing pad;

Embodiment:

Press the recycling of waste steam cooking equipment that Fig. 1 implements, a 8m 3Rotary spherical digester, the average waste vapour heat energy that reclaims is 177.38 thousand kilocalories/ball, by every m 3The heat energy that rotary spherical digester volumeter, waste vapour reclaim is amounted to mark coal 4.525kg, and average waste steam exhausting time 18.9 minutes/ball is than shortening 11.1 minutes 30 minutes average times towards the sky steam bleeding.

With a 14m 3Rotary spherical digester is to a 8m 3Rotary spherical digester is implemented the vapour phase metaideophone, accepts the rotary spherical digester (8m of vapour phase metaideophone 3Ball) ball internal pressure is from 0kg/cm 2Be elevated to 2~2.5kg/cm 2(gauge pressure), metaideophone time average 20 minutes.

Claims (8)

1, a kind of recycling of waste steam cooking equipment, mainly comprise rotary spherical digester and heat exchanger, steam-jet siphon (axially playpipe) (13) is arranged in the rotary spherical digester spheroid, filter bowl (15) and emptier (1), heat exchanger (10) is by accelerating tube (31), rectifying tube (30) and anemostat (29) are formed, the reclaimer that is characterised in that of the present utility model has also comprised black liquor reactor (12), the general of and alternate run in parallel with heat exchanger can recover (7), automatically control the pneumatic actuator (6) of general energy recover, the boiling waste vapour of a rotary spherical digester is imported the vapour phase converted injection device (4) that another rotary spherical digester is done secondary boiled utilization, receiving heat-exchanger and general can recover and join the heat energy reclaiming groove (9) of steam chest (11), dish is arranged to bend pipe (14) in the rotary spherical digester spheroid, the radial spray pipe (3) of not linking up mutually with axial playpipe and be located at the check valve (2) of dish to bend pipe and radial spray pipe junction, the filter bowl (15) of umbilical region is an ellipse garden shape in the ball, it and dish connect for floating between bend pipe (14), a centring ring (26) is established in the big end of accelerating tube in the heat exchanger (31), this centring ring and accelerating tube flange (25) are combined as a whole, the heat exchanger level places heat energy reclaiming groove, establish an arc flow guiding screen (8) on the cell wall of near-thermal interchanger anemostat (29) port of export one side, accelerating tube in the black liquor reactor (18) gos deep in the tube chamber of trunnion (24), the structure and the black liquor reactor of general energy recover are basic identical, and the arm (34) that supplies suction alkali lye to use promptly is equivalent to the aid distributing pipe structure of black liquor reactor.
2, by the described recycling of waste steam cooking equipment of claim 1, it is characterized in that the filter bowl bottom is provided with base plate in the rotary spherical digester spheroid, the filter opening gross area on the filter bowl is for coiling to more than 5 times of bend pipe cross-sectional area.
3,, it is characterized in that accelerating tube length is more than a times of return passage length in the heat exchanger by the described recycling of waste steam cooking equipment of claim 1.
4,, it is characterized in that the gross area of return port (27) approximates large and small 2.5~3.5 times of holding equal sectional area level with both hands of accelerating tube by the described recycling of waste steam cooking equipment of claim 3.
5,, it is characterized in that adopting between the inner tubal wall of the centring ring (26) of the big end of accelerating tube in the heat exchanger and return passage upper flange (33) the form assembling of interference fits by the described recycling of waste steam cooking equipment of claim 1.
6,, it is characterized in that accelerating tube in the black liquor reactor gos deep into the trunnion tube chamber and partly is about 0.5~1 times of accelerating tube end diameter by the described recycling of waste steam cooking equipment of claim 1.
7,, it is characterized in that trunnion in the black liquor reactor is to adopt not only acid and alkali-resistance but also to be that bigger material of thermal coefficient of expansion such as polytetrafluoroethylene (PTFE) are advisable by claim 1 or 6 described recycling of waste steam cooking equipment.
8,, it is characterized in that vapour phase metaideophone (4) is a four way cock, or set up a three-way cock that imports Boiler Steam by the described recycling of waste steam cooking equipment of claim 1.
CN198787204055U 1987-03-25 1987-03-25 Recoverable device of waste-steam CN87204055U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN198787204055U CN87204055U (en) 1987-03-25 1987-03-25 Recoverable device of waste-steam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN198787204055U CN87204055U (en) 1987-03-25 1987-03-25 Recoverable device of waste-steam

Publications (1)

Publication Number Publication Date
CN87204055U true CN87204055U (en) 1988-03-02

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ID=4819979

Family Applications (1)

Application Number Title Priority Date Filing Date
CN198787204055U CN87204055U (en) 1987-03-25 1987-03-25 Recoverable device of waste-steam

Country Status (1)

Country Link
CN (1) CN87204055U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103264037A (en) * 2013-04-16 2013-08-28 浙江布莱蒙农业科技股份有限公司 Treatment process of livestock died of epidemic diseases

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103264037A (en) * 2013-04-16 2013-08-28 浙江布莱蒙农业科技股份有限公司 Treatment process of livestock died of epidemic diseases
CN103264037B (en) * 2013-04-16 2015-06-17 浙江布莱蒙农业科技股份有限公司 Treatment process of livestock died of epidemic diseases

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