CN102183137B - Digester, method for increasing evaporation dehydration efficiency of digester and inner member assembly for realizing method - Google Patents
Digester, method for increasing evaporation dehydration efficiency of digester and inner member assembly for realizing method Download PDFInfo
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- CN102183137B CN102183137B CN 201110050055 CN201110050055A CN102183137B CN 102183137 B CN102183137 B CN 102183137B CN 201110050055 CN201110050055 CN 201110050055 CN 201110050055 A CN201110050055 A CN 201110050055A CN 102183137 B CN102183137 B CN 102183137B
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Abstract
The invention relates to an inner member assembly which is arranged in a digester. The inner member assembly comprises at least one steam inlet pipe, at least one steam discharge pipe, at least one sheltering member and/or at least one another sheltering member, wherein the at least one steam inlet pipe is arranged in vertical direction and the pipe wall of the steam inlet pipe is provided with a steam inlet hole; the at least one steam discharge pipe is arranged in the vertical direction and the pipe wall of the steam discharge pipe is provided with a steam discharge hole; the at least one sheltering member is fixed above the steam inlet hole on the steam inlet pipe and is arranged at a certain angle with the steam inlet pipe; the at least one another sheltering member is fixed above the steam discharge hole on the steam discharge pipe and is arranged at a certain angle with the steam discharge pipe; the sheltering member is in the shape of a section of U-shaped curved surface or V-shaped folding surface; and an opening of the U-shaped curved surface or the V-shaped folding surface of the fixed sheltering member faces downwards. The invention also relates to a method for increasing the evaporation dehydration efficiency of the digester by using the inner member assembly.
Description
Invention field
The present invention relates to a kind of more efficient dehydration by evaporation method, and relate to the equipment of realizing the method.
Background technology
In existing method of solid material being carried out dehydration by evaporation, usually use boiling vessel.Boiling vessel generally comprises the inner members such as the perforated baffle, discharge outlet of tank body, steam inlet and the steam inlet pipe that is in fluid communication with it, steam (vapor) outlet and the gland steam exhauster that is in fluid communication with it, solid material charging aperture, solid material discharging opening, load bearing solid material.Detailed structure about boiling vessel, for example can referring to patent CN1989227 and with the application number that the invention belongs to same applicant be another patent that is entitled as " a kind of boiling vessel that solid material is carried out boiling " of 201110004082.3, incorporate above-mentioned full patent texts into this paper by reference, just as their all the elements describing in this patent.Above-mentioned boiling vessel inside generally need to import or derive steam with many antipriming pipes, but thin solid material is easy to enter in antipriming pipe from the hole, cause antipriming pipe to stop up, cause the importing of steam and derive not smooth, the boiling vessel internal pressure is abnormal, affect the technique continuity, therefore wish to avoid this type of blockage problem.In addition, the steam-energy that also wish the to import solid material fixed bed of flowing through as far as possible equably is so that steam contacts as far as possible fully with solid material, so that the efficient of raising dehydration by evaporation.Wish that also when steam flows, the situation current downflow resistance of not short circuit is as far as possible little guaranteeing Uniform Flow in the solid material fixed bed.In order to realize above-mentioned three purposes, the present invention has been proposed.
Summary of the invention
First aspect the invention provides a kind of inner member sub-assembly that is arranged on boiling vessel inside, comprising:
At least one is used for external steam is introduced the steam inlet pipe of boiling vessel inside, and it is arranged with above-below direction, and has admission opening on its tube wall;
At least one gland steam exhauster that is used for the steam of boiling vessel inside is discharged boiling vessel, it is arranged with above-below direction, and has exhaust hole on its tube wall;
Be fixed on the admission opening on described steam inlet pipe the top and with at least one block piece of the angled layout of described steam inlet pipe, and/or be fixed on the exhaust hole on described gland steam exhauster the top and with at least one block piece of the angled layout of described gland steam exhauster, one section U-shaped curved surface or the V-type folding face that is shaped as of described block piece, and the U-shaped curved surface of the described block piece after fixing or V-type folding face is opening down.
Second aspect the invention provides a kind of inner member sub-assembly that is arranged on boiling vessel inside, comprising:
At least one is used for external steam is introduced the steam inlet pipe of boiling vessel inside, and it arranges with above-below direction, and it has towards the admission arm that extends laterally, and has admission opening on the tube wall of admission arm;
At least one gland steam exhauster that is used for the steam of boiling vessel inside is discharged boiling vessel, it arranges with above-below direction, and it has towards the blow-off branch that extends laterally, and has exhaust hole on the tube wall of blow-off branch;
One end is buckled in described admission arm top and the other end is unsettled or be fixed at least one block piece of the below of blow-off branch, and/or one end be buckled in described blow-off branch top and the other end is unsettled or be fixed at least one block piece of the below of admission arm, described block piece be shaped as one section downward opening U-shaped curved surface or V-type folding face.
The third aspect the invention provides a kind of method that improves boiling vessel dehydration by evaporation efficient, comprises the following steps:
A, the boiling vessel that provides its inside to have the inner member sub-assembly, described inner member sub-assembly comprises:
At least one is used for external steam is introduced the steam inlet pipe of boiling vessel inside, and it is arranged with above-below direction, and has admission opening on its tube wall;
At least one gland steam exhauster that is used for the steam of boiling vessel inside is discharged boiling vessel, it is arranged with above-below direction, and has exhaust hole on its tube wall;
Be fixed on the admission opening on described steam inlet pipe the top and with at least one block piece of the angled layout of described steam inlet pipe, and/or be fixed on the exhaust hole on described gland steam exhauster the top and with at least one block piece of the angled layout of described gland steam exhauster, one section U-shaped curved surface or the V-type folding face that is shaped as of described block piece, and the U-shaped curved surface of the described block piece after fixing or V-type folding face is opening down, and randomly has the hole on described block piece;
The solid material of b, the dehydration to be evaporated of packing into to boiling vessel inside forms the fixed bed of this solid material;
C, pass into the first steam via described steam inlet pipe;
D, when there is no block piece on described steam inlet pipe, make described the first steam flow in the fixed bed of described solid material via described admission opening; When on described steam inlet pipe, block piece being arranged, the orifice flow that described the first steam is chosen wantonly via the cavity that forms between the block piece on described steam inlet pipe and described solid material or gap or via the block piece on described steam inlet pipe have is to the fixed bed of described solid material; With this first steam, solid material is carried out dehydration by evaporation, generate simultaneously the second steam;
E, when there is no block piece on described gland steam exhauster, described the second steam is collected in described gland steam exhauster via described exhaust hole; When on described gland steam exhauster, block piece being arranged, described the second steam is collected in described gland steam exhauster via the cavity between the block piece on described gland steam exhauster and described solid material; And then via described gland steam exhauster, described the second steam is discharged boiling vessel.
Fourth aspect the invention provides a kind of method that improves boiling vessel dehydration by evaporation efficient, comprises the following steps:
A, the boiling vessel that provides its inside to have the inner member sub-assembly, described inner member sub-assembly comprises:
At least one is used for external steam is introduced the steam inlet pipe of boiling vessel inside, and it arranges with above-below direction, and it has towards the admission arm that extends laterally, and has admission opening on the tube wall of admission arm;
At least one gland steam exhauster that is used for the steam of boiling vessel inside is discharged boiling vessel, it is with above-below direction, and it has towards the blow-off branch that extends laterally, and has exhaust hole on the tube wall of blow-off branch;
One end is buckled in described admission arm top and the other end is unsettled or be fixed at least one block piece of the below of blow-off branch, and/or one end be buckled in described blow-off branch top and the other end is unsettled or be fixed at least one block piece of the below of admission arm, one section downward opening U-shaped curved surface or the V-type folding face that is shaped as of described block piece, and randomly have the hole on described block piece;
The solid material of b, the dehydration to be evaporated of packing into to boiling vessel inside forms the fixed bed of this solid material;
C, pass into the first steam via described steam inlet pipe;
D, when described admission arm top does not have block piece, described the first steam is flow in the fixed bed of described solid material via described admission arm; When there is block piece described admission arm top, make described the first steam choose the orifice flow that has wantonly extremely in the fixed bed of described solid material via the cavity that forms between the block piece of described admission arm top and described solid material or gap or via the block piece on described admission arm; With this first steam, solid material is carried out dehydration by evaporation, generate simultaneously the second steam;
E, when described blow-off branch top does not have block piece, described the second steam is collected in described gland steam exhauster via described blow-off branch; When above described blow-off branch, block piece being arranged, described the second steam is collected in described gland steam exhauster via the cavity that forms between the block piece on described blow-off branch and described solid material or gap; And then via described gland steam exhauster, described the second steam is discharged boiling vessel.
The 5th aspect the present invention relates to comprise the boiling vessel of the inner member sub-assembly of first aspect or second aspect.
The accompanying drawing summary
Fig. 1 is the indicative icon of the inner member sub-assembly of a first aspect of the present invention.
Fig. 2 is the indicative icon of the inner member sub-assembly of a second aspect of the present invention.
Fig. 3 is the indicative icon of preferred inner member sub-assembly of the present invention.
Fig. 4 is the indicative icon of the preferred inner member sub-assembly of another type of the present invention.
Accompanying drawing is only schematically, does not plan to limit the scope of the invention by any way.
Detailed Description Of The Invention
Now the each side of a first aspect of the present invention is described in detail as follows:
The mode that boiling vessel of the present invention adopts axis to arrange up and down when work.The inner member sub-assembly of a first aspect of the present invention is arranged on boiling vessel inside, and it comprises: at least one is used for external steam is introduced the steam inlet pipe of boiling vessel inside, and it is arranged with above-below direction, and has admission opening on its tube wall; At least one gland steam exhauster that is used for the steam of boiling vessel inside is discharged boiling vessel, it is arranged with above-below direction, and has exhaust hole on its tube wall; Be fixed on the admission opening on described steam inlet pipe the top and with at least one block piece of the angled layout of described steam inlet pipe, and/or be fixed on the exhaust hole on described gland steam exhauster the top and with at least one block piece of the angled layout of described gland steam exhauster, one section U-shaped curved surface or the V-type folding face that is shaped as of described block piece, and the U-shaped curved surface of the described block piece after fixing or V-type folding face is opening down.Wherein said steam inlet pipe is preferably many, and more preferably be arranged in parallel with each other many, the one end is communicated with the steam inlet of boiling vessel, and its other end opens wide, have on its tube wall at least one, preferred a plurality of admission openings.Wherein said gland steam exhauster is preferably many, and more preferably be arranged in parallel with each other many, the one end is communicated with the steam (vapor) outlet of boiling vessel, and its other end opens wide, have on its tube wall at least one, preferred a plurality of exhaust holes.When boiling vessel is worked, the steam that passes into enters into solid material fixed bed in boiling vessel through described steam inlet pipe and admission opening successively, and solid material is carried out dehydration by evaporation, the steam that then produces is discharged to the boiling vessel outside through described exhaust hole and gland steam exhauster successively.Also there is at least one block piece in wherein said boiling vessel, this at least one block piece can be fixed on the top of the admission opening of described steam inlet pipe, and with the angled layout of described steam inlet pipe (layout for example meets at right angles), and/or this at least one block piece can be fixed on the top of the exhaust hole of described gland steam exhauster, and with the angled layout of described gland steam exhauster (layout for example meets at right angles).One section U-shaped curved surface or the V-type folding face that is shaped as of described block piece, and the U-shaped curved surface of the described block piece after fixing or V-type folding face is opening down.The block piece of arranging with such shape and mode is similar to an outstanding the brim of a hat, gear is above admission opening or exhaust hole, like this, solid material joins in boiling vessel from the boiling vessel top and when forming the solid material fixed bed, and the effect of blocking of block piece can avoid solid material from admission opening or exhaust hole enters in steam inlet pipe or in gland steam exhauster.And when solid material in boiling vessel inside natural packing and when forming the solid material fixed bed from bottom to top, the effect of blocking due to block piece, can leave cavity between the downward opening U-shaped curved surface of block piece or V-type folding face and solid material, this cavity can not piled with by solid material, is convenient to therefore can form the passage that steam passes through.In addition, also there is the gap between the edge of the downward opening U-shaped curved surface of block piece or V-type folding face and solid material, comes in and goes out for steam.When admission, the steam that this cavity and this gap are conducive to enter spreads all over equably whole solid material fixed bed and distributes; When steam discharge, this cavity and gap are conducive to collect equably steam and collected steam are aggregated in gland steam exhauster swimmingly.
The described broad understanding of fixedly doing, can for example be permanently fixed for any fixed form herein, such as fixing by modes such as welding, riveted joints, is for example again detachable fixing, such as connect by pin, the modes such as bolt connection, draw-in groove connection fix.
In the preferred embodiment of a first aspect of the present invention, when on described steam inlet pipe, a plurality of admission opening being arranged, preferably be furnished with a block piece above each admission opening.Wherein said a plurality of hole can be arranged up and down along the steam inlet pipe short transverse; Perhaps described a plurality of hole can be horizontally disposed along the steam inlet pipe circumference; Perhaps described a plurality of hole was not only arranged but also horizontally disposed along the steam inlet pipe circumference up and down along the steam inlet pipe short transverse.In preferred embodiments, when on described gland steam exhauster, a plurality of exhaust hole being arranged, preferably be furnished with a block piece above each exhaust hole.Wherein said a plurality of hole can be arranged up and down along the gland steam exhauster short transverse; Perhaps described a plurality of hole can be horizontally disposed along the gland steam exhauster circumference; Perhaps described a plurality of hole was not only arranged but also horizontally disposed along the gland steam exhauster circumference up and down along the gland steam exhauster short transverse.
In the preferred embodiment of a first aspect of the present invention, an end of at least some block pieces is fixed on the top of the admission opening on described steam inlet pipe or is fixed on the top of the exhaust hole on described gland steam exhauster, and the other end is unsettled.Free end also forms outlet or the entrance of steam.
In the preferred embodiment of a first aspect of the present invention, one end of at least some block pieces is fixed on the top of the admission opening on described steam inlet pipe and the other end is fixed on described gland steam exhauster below described exhaust hole, and/or an end of at least some block pieces is fixed on described steam inlet pipe and below admission opening and the other end be fixed on exhaust hole on described gland steam exhauster above, in other words, the two ends of at least some block pieces all are fixed on steam inlet pipe and gland steam exhauster, but are not fixed on simultaneously the top of admission opening and exhaust hole.To be block piece fix more firmly because of two ends the benefit of doing like this, and two ends are not fixed on the top of admission opening and exhaust hole simultaneously, can prevent the steam short circuit that passes into.The steam short circuit refer to steam directly via the cavity that leaves between the downward opening U-shaped curved surface of block piece or V-type folding face and solid material by and by the solid material fixed bed.
In the most preferred embodiment of a first aspect of the present invention, have a plurality of admission openings of arranging along short transverse on the tube wall of described steam inlet pipe, have a plurality of exhaust holes of arranging along short transverse on the tube wall of described gland steam exhauster, and flatly arrange at least some block pieces between at least some highly identical or close admission openings and exhaust hole, the two ends of described block piece are not fixed on the top of the identical or close admission opening of described height and exhaust hole simultaneously, to prevent the steam short circuit.This preferred embodiment can by make a plurality of admission openings and a plurality of exhaust hole being staggered on short transverse described block piece horizontally and two ends be fixed on and realize on steam inlet pipe and gland steam exhauster, as shown in Figure 4.
The schematic diagram of the embodiment of a first aspect of the present invention as shown in Figure 1.
Now the each side of a second aspect of the present invention is described in detail as follows:
The mode that boiling vessel of the present invention adopts axis to arrange up and down when work.The inner member sub-assembly of a second aspect of the present invention is arranged on boiling vessel inside, it comprises: at least one is used for external steam is introduced the steam inlet pipe of boiling vessel inside, it arranges with above-below direction, and it has towards the admission arm that extends laterally, and has admission opening on the tube wall of admission arm; At least one gland steam exhauster that is used for the steam of boiling vessel inside is discharged boiling vessel, it arranges with above-below direction, and it has towards the blow-off branch that extends laterally, and has exhaust hole on the tube wall of blow-off branch; One end is buckled in described admission arm top and the other end is unsettled or be fixed at least one block piece of the below of blow-off branch, and/or one end be buckled in described blow-off branch top and the other end is unsettled or be fixed at least one block piece of the below of admission arm, described block piece be shaped as one section downward opening U-shaped curved surface or V-type folding face.Wherein said steam inlet pipe is preferably many, and more preferably be arranged in parallel with each other many, the one end is communicated with the steam inlet of boiling vessel, its other end opens wide, and it also has towards the admission arm that extends laterally, and has admission opening on the tube wall of admission arm, exhaust hole has one at least, preferably has a plurality of.Wherein said gland steam exhauster is preferably many, and more preferably be arranged in parallel with each other many, the one end is communicated with the steam (vapor) outlet of boiling vessel, its other end opens wide, and it has towards the blow-off branch that extends laterally, and has exhaust hole on the tube wall of blow-off branch, exhaust hole has one at least, preferably has a plurality of.When boiling vessel is worked, the steam that passes into enters into solid material fixed bed in boiling vessel through described steam inlet pipe, admission arm and admission opening successively, and solid material is carried out dehydration by evaporation, the steam that then produces is discharged to the boiling vessel outside through described exhaust hole, blow-off branch and gland steam exhauster successively.Also there is at least one block piece in wherein said boiling vessel, this at least one block piece one end is buckled in described admission arm top and the other end is unsettled or be fixed on the below of described blow-off branch, and/or an end is buckled in described blow-off branch top and the other end is unsettled or be fixed on the below of admission arm.One section downward opening U-shaped curved surface or the V-type folding face that is shaped as of described block piece.The block piece of arranging with such shape and mode is similar to an outstanding the brim of a hat, gear is above admission opening or exhaust hole, such solid material joins in boiling vessel from the boiling vessel top and when forming the solid material fixed bed, and the effect of blocking of block piece can avoid solid material from admission opening or exhaust hole enters in the admission arm or in blow-off branch.And when solid material in boiling vessel inside natural packing and when forming the solid material fixed bed from bottom to top, the effect of blocking due to block piece, can leave cavity between the downward opening U-shaped curved surface of block piece or V-type folding face and solid material, this cavity can not piled with by solid material, is convenient to therefore can form the passage that steam passes through.In addition, also there is the gap between the edge of the downward opening U-shaped curved surface of block piece or V-type folding face and solid material, comes in and goes out for steam.When admission, the steam that this cavity and this gap are conducive to enter spreads all over equably whole solid material fixed bed and distributes; When steam discharge, this cavity and gap are conducive to collect equably steam and collected steam are aggregated in gland steam exhauster swimmingly.
The described broad understanding of fixedly doing, can for example be permanently fixed for any fixed form herein, such as fixing by modes such as welding, riveted joints, is for example again detachable fixing, such as connect by pin, the modes such as bolt connection, draw-in groove connection fix.
In the preferred embodiment of a second aspect of the present invention, the described admission arm layout that is perpendicular to one another with described steam inlet pipe, and/or the described blow-off branch layout that is perpendicular to one another with described gland steam exhauster.
In the preferred embodiment of a second aspect of the present invention, described steam inlet pipe has a plurality of admission arms of arranging along short transverse, described gland steam exhauster has a plurality of blow-off branches of arranging along short transverse, described a plurality of admission arm and described a plurality of blow-off branch in height are staggered, and described block piece is horizontally disposed.
The schematic diagram of the embodiment of a second aspect of the present invention for the sake of clarity, has only drawn a part of hole on U-shaped curved surface and V-type folding face as shown in Figure 2 in figure.
In the preferred embodiment of a first aspect of the present invention or second aspect, the described block piece that is shaped as U-shaped curved surface or V-type folding face is enough to make described solid material landing from it thereon when opening down the placement.When described block piece was downward opening V-type folding face, this can realize greater than the angle of repose of solid material by making folding face and horizontal plane angulation.When described block piece was downward opening U-shaped curved surface, this can realize greater than the angle of repose of solid material by the tangent plane and the horizontal plane angulation that make each place, point of contact on curved surface.Wherein the angle of repose claims again angle of repose, refers to free inclined-plane and the formed maximum angular of horizontal plane of powder accumulation horizon, can for example measure according to GB/T-18702-2002.
In the preferred embodiment of a first aspect of the present invention or second aspect, also has the hole on described block piece.These holes can allow the steam turnover.Have a plurality of holes on preferred block piece, and these holes are preferably distributed on U-shaped curved surface or V-type folding face.
In the preferred embodiment of a first aspect of the present invention or second aspect, also have on each block piece towards a part that blocks that extends laterally, this shape of blocking a part also is U-shaped curved surface or V-type folding face, and also opening down placement, blocks on a part also randomly to have the hole.Preferably, this blocks the part layout that is perpendicular to one another with block piece.
In the preferred embodiment of a first aspect of the present invention or second aspect, also has its other block piece both of connection between two adjacent block pieces, the shape of the block piece that this is other is also U-shaped curved surface or V-type folding face, and also opening down placement, randomly has the hole on it.It seems from top view like this, these block pieces consist of crisscross groined type.The steam of being more convenient for like this spreads all over whole solid material fixed bed, and the connected mode of groined type provides the structure steadiness.As shown in Figure 3, for the sake of clarity, the solid material fixed bed does not omit and draws.
Block piece of the present invention available angle steel is in practice made, and for example uses equal leg angle to make.Certainly, also can use other material except steel.
Above inner member sub-assembly to a first aspect of the present invention and second aspect is introduced; but obviously; those skilled in the art are subject to inspiration of the present invention; also can expect other distortion embodiment; for example some feature of first aspect and some feature of second aspect made up and form the distortion embodiment, thinking that such distortion embodiment is also within protection scope of the present invention.
A third aspect of the present invention provides a kind of method that improves boiling vessel dehydration by evaporation efficient, below its each included step is described in detail:
In the step a of a third aspect of the present invention, the boiling vessel that provides its inside to have the inner member sub-assembly, described inner member sub-assembly comprises:
At least one is used for external steam is introduced the steam inlet pipe of boiling vessel inside, and it is arranged with above-below direction, and has admission opening on its tube wall;
At least one gland steam exhauster that is used for the steam of boiling vessel inside is discharged boiling vessel, it is arranged with above-below direction, and has exhaust hole on its tube wall;
Be fixed on the admission opening on described steam inlet pipe the top and with at least one block piece of the angled layout of described steam inlet pipe, and/or be fixed on the exhaust hole on described gland steam exhauster the top and with at least one block piece of the angled layout of described gland steam exhauster, one section U-shaped curved surface or the V-type folding face that is shaped as of described block piece, and the U-shaped curved surface of the described block piece after fixing or V-type folding face is opening down, and randomly has the hole on described block piece.Inner member sub-assembly described in this step a can adopt the inner member sub-assembly described in a first aspect of the present invention and various preferred version thereof.
In the step b of a third aspect of the present invention, the solid material of the dehydration to be evaporated of packing into to boiling vessel inside forms the fixed bed of this solid material.This solid material natural packing is inner in boiling vessel, and has very flexuose space between solid material, and these spaces can supply the vapor stream mistake.
In the step c of a third aspect of the present invention, pass into the first steam via described steam inlet pipe.This first steam is the steam with first enthalpy, such as but not limited to being superheated steam, is used for solid material is heated to carry out dehydration by evaporation.
In the steps d of a third aspect of the present invention, when there is no block piece on described steam inlet pipe, make described the first steam flow in the fixed bed of described solid material via described admission opening; When on described steam inlet pipe, block piece being arranged, the orifice flow that described the first steam is chosen wantonly via the cavity that forms between the block piece on described steam inlet pipe and described solid material or gap or via the block piece on described steam inlet pipe have is to the fixed bed of described solid material; With this first steam, solid material is carried out dehydration by evaporation, generate simultaneously the second steam.This second steam is the steam with second enthalpy, and this second enthalpy is lower than described the first enthalpy.In the situation that the first steam is superheated steam, this second steam can be saturated vapor.In the situation that the first steam is saturated vapor, this second steam can be unsaturated steam.Being defined in the thermodynamics textbook of superheated steam, saturated vapor and unsaturated steam has definition, do not repeat them here.
In the step e of a third aspect of the present invention, when there is no block piece on described gland steam exhauster, described the second steam is collected in described gland steam exhauster via described exhaust hole; When on described gland steam exhauster, block piece being arranged, described the second steam is collected in described gland steam exhauster via formation cavity or gap between the block piece on described gland steam exhauster and described solid material; And then via described gland steam exhauster, described the second steam is discharged boiling vessel.
A fourth aspect of the present invention provides a kind of method that improves boiling vessel dehydration by evaporation efficient, below its each included step is described in detail:
In the step a of a fourth aspect of the present invention, the boiling vessel that provides its inside to have the inner member sub-assembly, described inner member sub-assembly comprises:
At least one is used for external steam is introduced the steam inlet pipe of boiling vessel inside, and it arranges with above-below direction, and it has towards the admission arm that extends laterally, and has admission opening on the tube wall of admission arm;
At least one gland steam exhauster that is used for the steam of boiling vessel inside is discharged boiling vessel, it is with above-below direction, and it has towards the blow-off branch that extends laterally, and has exhaust hole on the tube wall of blow-off branch;
One end is buckled in described admission arm top and the other end is unsettled or be fixed at least one block piece of the below of blow-off branch, and/or one end be buckled in described blow-off branch top and the other end is unsettled or be fixed at least one block piece of the below of admission arm, one section downward opening U-shaped curved surface or the V-type folding face that is shaped as of described block piece, and randomly have the hole on described block piece.Described inner member sub-assembly described in this step a can adopt the inner member sub-assembly described in a second aspect of the present invention and various preferred version thereof.
In the step b of a fourth aspect of the present invention, the solid material of the dehydration to be evaporated of packing into to boiling vessel inside forms the fixed bed of this solid material.This solid material natural packing is inner in boiling vessel, and has very flexuose space between solid material, and these spaces can supply the vapor stream mistake.
In the step c of a fourth aspect of the present invention, pass into the first steam via described steam inlet pipe.This first steam is the steam with first enthalpy, such as but not limited to being superheated steam, is used for solid material is heated to carry out dehydration by evaporation.
In the steps d of a fourth aspect of the present invention, when there is no block piece above described admission arm, described the first steam is flow in the fixed bed of described solid material via described admission arm; When there is block piece described admission arm top, make described the first steam choose the orifice flow that has wantonly extremely in the fixed bed of described solid material via the cavity that forms between the block piece of described admission arm top and described solid material or gap or via the block piece on described admission arm; With this first steam, solid material is carried out dehydration by evaporation, generate simultaneously the second steam.This second steam is the steam with second enthalpy, and this second enthalpy is lower than described the first enthalpy.In the situation that the first steam is superheated steam, this second steam can be saturated vapor.In the situation that the first steam is saturated vapor, this second steam can be unsaturated steam.Being defined in the thermodynamics textbook of superheated steam, saturated vapor and unsaturated steam has definition, do not repeat them here.
In the step e of a fourth aspect of the present invention, when there is no block piece above described blow-off branch, described the second steam is collected in described gland steam exhauster via described blow-off branch; When above described blow-off branch, block piece being arranged, described the second steam is collected in described gland steam exhauster via the cavity that forms between the block piece on described blow-off branch and described solid material or gap; And then via described gland steam exhauster, described the second steam is discharged boiling vessel.
The method of above raising boiling vessel dehydration by evaporation efficient to a third aspect of the present invention and fourth aspect is introduced; but obviously; those skilled in the art are subject to inspiration of the present invention; also can expect other distortion embodiment; for example some feature of the third aspect and some feature of fourth aspect made up and form the distortion embodiment, thinking that such distortion embodiment is also within protection scope of the present invention.
Embodiment
It is boiling vessel in another patent of 201110004082.3 co-applicant that the boiling vessel of experiment use adopts application number, and adopts respectively and be furnished with the boiling vessel of block piece of the present invention and do not have the boiling vessel of block piece of the present invention to compare experiment.
Below some experiment statistics data:
Experiment boiling vessel: internal diameter 3500mm; 118 cubic metres of total volumies; Totally 9 of steam inlet pipe DN150, totally 25 of gland steam exhauster DN150; In mode shown in Figure 3, a plurality of block pieces are set on the short transverse of steam inlet pipe and gland steam exhauster, their spacings each other are 600mm; Adopt such boiling vessel of a plurality of parallel connections.
The solid material raw material is that moisture is 32～35% coal, and requiring the finished product brown coal moisture after boiling is 5～12%.
When block piece was arranged: the circular flow time (beginning to be fed to the complete spent time of finished product discharging from the solid material raw material) was 2.5 hours, steam drop≤0.06MPa between steam inlet and steam (vapor) outlet, product qualified rate (pressing the tank number calculates) is more than 90%; The single tank finished product of the qualified finger of finished product average moisture≤12% wherein; Product qualified rate refers to the ratio of qualified tank number and total tank number.
In the time of unobstructed: a circular flow time is 3 hours, the steam drop 〉=0.1MPa between steam inlet and steam (vapor) outlet, product qualified rate (pressing the tank number calculates) less than 60%;
As seen, the main distinction that has block piece to compare unobstructed is that steam resistance significantly reduces, the single circular flow cycle is short, pipeline is difficult for boiling plug.
Abovely as an example of brown coal example, embodiments of the invention have been described, but obviously the present invention is applicable to brown coal incessantly, but is applicable to any moisture solid material, preferred applicable block, graininess or Powdered, slimy solid material.
Advantage of the present invention is as follows:
Block piece can prevent that solid material from entering blocking pipe in steam inlet pipe or gland steam exhauster, guaranteed the continuity of digestion process;
Space between solid material and solid material can be regarded as the rough walls pipeline of steam circulation, and it is very large to the resistance that vapor flow produces.And the cavity that forms between block piece and solid material has formed the fluid passage more regular and more smooth than the space between solid material, can reduce the vapor flow resistance, and shortens the needed time of boiling.
Being more evenly distributed of steam improved the efficient of dehydration by evaporation.
Installation, convenient disassembly, and steam inlet pipe and gland steam exhauster have been played the firm effect of supporting.
Claims (16)
1. inner member sub-assembly that is arranged on boiling vessel inside comprises:
At least one is used for external steam is introduced the steam inlet pipe of boiling vessel inside, and it is arranged with above-below direction, and has admission opening on its tube wall;
At least one gland steam exhauster that is used for the steam of boiling vessel inside is discharged boiling vessel, it is arranged with above-below direction, and has exhaust hole on its tube wall;
Be fixed on the admission opening on described steam inlet pipe the top and with at least one block piece of the angled layout of described steam inlet pipe, and/or be fixed on the exhaust hole on described gland steam exhauster the top and with at least one block piece of the angled layout of described gland steam exhauster, one section U-shaped curved surface or the V-type folding face that is shaped as of described block piece, and the U-shaped curved surface of the described block piece after fixing or V-type folding face is opening down.
2. the inner member sub-assembly of claim 1, wherein an end of at least some block pieces is fixed on the top of the admission opening on described steam inlet pipe or is fixed on the top of the exhaust hole on described gland steam exhauster, and the other end is unsettled.
3. the inner member sub-assembly of claim 1, wherein an end of at least some block pieces is fixed on the top of the admission opening on described steam inlet pipe and the other end is fixed on described gland steam exhauster below described exhaust hole, and/or an end of at least some block pieces is fixed on described steam inlet pipe and below admission opening and the other end be fixed on exhaust hole on described gland steam exhauster above.
4. claim 1 or 3 inner member sub-assembly, have a plurality of admission openings of arranging along short transverse on the tube wall of wherein said steam inlet pipe, have a plurality of exhaust holes of arranging along short transverse on the tube wall of described gland steam exhauster, and flatly arrange at least some block pieces between at least some highly identical or close admission openings and exhaust hole, the two ends of described block piece are not fixed on the top of the identical or close admission opening of described height and exhaust hole simultaneously.
5. inner member sub-assembly that is arranged on boiling vessel inside comprises:
At least one is used for external steam is introduced the steam inlet pipe of boiling vessel inside, and it arranges with above-below direction, and it has towards the admission arm that extends laterally, and has admission opening on the tube wall of admission arm;
At least one gland steam exhauster that is used for the steam of boiling vessel inside is discharged boiling vessel, it arranges with above-below direction, and it has towards the blow-off branch that extends laterally, and has exhaust hole on the tube wall of blow-off branch;
One end is buckled in described admission arm top and the other end is unsettled or be fixed at least one block piece of the below of blow-off branch, and/or one end be buckled in described blow-off branch top and the other end is unsettled or be fixed at least one block piece of the below of admission arm, described block piece be shaped as one section downward opening U-shaped curved surface or V-type folding face.
6. the inner member sub-assembly of claim 5, wherein said steam inlet pipe has a plurality of admission arms of arranging along short transverse, described gland steam exhauster has a plurality of blow-off branches of arranging along short transverse, described a plurality of admission arm and described a plurality of blow-off branch in height are staggered, and described block piece is horizontally disposed.
7. claim 1 or 5 inner member sub-assembly, the wherein said block piece that is shaped as U-shaped curved surface or V-type folding face are enough to make solid material landing from it thereon when opening down the placement.
8. claim 1 or 5 inner member sub-assembly, have the hole on wherein said block piece.
9. claim 1 or 5 inner member sub-assembly, wherein also have on each block piece towards a part that blocks that extends laterally, and this shape of blocking a part also is U-shaped curved surface or V-type folding face, and also opening down placement, blocks on a part to have the hole.
10. claim 1 or 5 inner member sub-assembly, wherein also have its other block piece both of connection between two adjacent block pieces, and the shape of the block piece that this is other be also that U-shaped curved surface or V-type are rolled over face, and also opening down placement, has the hole on it.
11. the inner member sub-assembly of claim 1, wherein said certain angle are the right angle.
12. the inner member sub-assembly of claim 1 or 5, wherein said block piece is made by angle steel.
13. a method that improves boiling vessel dehydration by evaporation efficient comprises the following steps:
A, the boiling vessel that provides its inside to have the inner member sub-assembly, described inner member sub-assembly comprises:
At least one is used for external steam is introduced the steam inlet pipe of boiling vessel inside, and it is arranged with above-below direction, and has admission opening on its tube wall;
At least one gland steam exhauster that is used for the steam of boiling vessel inside is discharged boiling vessel, it is arranged with above-below direction, and has exhaust hole on its tube wall;
Be fixed on the admission opening on described steam inlet pipe the top and with at least one block piece of the angled layout of described steam inlet pipe, and/or be fixed on the exhaust hole on described gland steam exhauster the top and with at least one block piece of the angled layout of described gland steam exhauster, one section U-shaped curved surface or the V-type folding face that is shaped as of described block piece, and the U-shaped curved surface of the described block piece after fixing or V-type folding face is opening down, and has the hole on described block piece;
The solid material of b, the dehydration to be evaporated of packing into to boiling vessel inside forms the fixed bed of this solid material;
C, pass into the first steam via described steam inlet pipe;
D, when there is no block piece on described steam inlet pipe, make described the first steam flow in the fixed bed of described solid material via described admission opening; When on described steam inlet pipe, block piece being arranged, make orifice flow that described the first steam has via the cavity that forms between the block piece on described steam inlet pipe and described solid material or gap or via the block piece on described steam inlet pipe to the fixed bed of described solid material; With this first steam, solid material is carried out dehydration by evaporation, generate simultaneously the second steam;
E, when there is no block piece on described gland steam exhauster, described the second steam is collected in described gland steam exhauster via described exhaust hole; When on described gland steam exhauster, block piece being arranged, described the second steam is collected in described gland steam exhauster via the cavity that forms between the block piece on described gland steam exhauster and described solid material or gap; And then via described gland steam exhauster, described the second steam is discharged boiling vessel.
14. a method that improves boiling vessel dehydration by evaporation efficient comprises the following steps:
A, the boiling vessel that provides its inside to have the inner member sub-assembly, described inner member sub-assembly comprises:
At least one is used for external steam is introduced the steam inlet pipe of boiling vessel inside, and it arranges with above-below direction, and it has towards the admission arm that extends laterally, and has admission opening on the tube wall of admission arm;
At least one gland steam exhauster that is used for the steam of boiling vessel inside is discharged boiling vessel, it arranges with above-below direction, and it has towards the blow-off branch that extends laterally, and has exhaust hole on the tube wall of blow-off branch;
One end is buckled in described admission arm top and the other end is unsettled or be fixed at least one block piece of the below of blow-off branch, and/or one end be buckled in described blow-off branch top and the other end is unsettled or be fixed at least one block piece of the below of admission arm, one section downward opening U-shaped curved surface or the V-type folding face that is shaped as of described block piece, and have the hole on described block piece;
The solid material of b, the dehydration to be evaporated of packing into to boiling vessel inside forms the fixed bed of this solid material;
C, pass into the first steam via described steam inlet pipe;
D, when described admission arm top does not have block piece, described the first steam is flow in the fixed bed of described solid material via described admission arm; When there is block piece described admission arm top, make orifice flow that described the first steam has via the cavity that forms between the block piece of described admission arm top and described solid material or gap or via the block piece on described admission arm extremely in the fixed bed of described solid material; With this first steam, solid material is carried out dehydration by evaporation, generate simultaneously the second steam;
E, when described blow-off branch top does not have block piece, described the second steam is collected in described gland steam exhauster via described blow-off branch; When above described blow-off branch, block piece being arranged, described the second steam is collected in described gland steam exhauster via the cavity that forms between the block piece on described blow-off branch and described solid material or gap; And then via described gland steam exhauster, described the second steam is discharged boiling vessel.
15. the method for claim 13 or 14, wherein said the first steam is superheated steam, and described the second steam is saturated vapor; Perhaps described the first steam is saturated vapor, and described the second steam is unsaturated steam.
16. comprise the boiling vessel of the inner member sub-assembly of claim 1 or 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110050055 CN102183137B (en) | 2011-03-02 | 2011-03-02 | Digester, method for increasing evaporation dehydration efficiency of digester and inner member assembly for realizing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110050055 CN102183137B (en) | 2011-03-02 | 2011-03-02 | Digester, method for increasing evaporation dehydration efficiency of digester and inner member assembly for realizing method |
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| CN102183137A CN102183137A (en) | 2011-09-14 |
| CN102183137B true CN102183137B (en) | 2013-06-05 |
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| CN 201110050055 Expired - Fee Related CN102183137B (en) | 2011-03-02 | 2011-03-02 | Digester, method for increasing evaporation dehydration efficiency of digester and inner member assembly for realizing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102840748B (en) * | 2012-09-21 | 2014-08-13 | 山西鑫立能源科技有限公司 | Hot water gas dehydration device for low rank bituminous coal |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1040263A (en) * | 1988-08-11 | 1990-03-07 | 阿尔斯特罗姆弗列塔根瑞典公司 | Equipment and method from wet fuel generation steam |
| CN2531339Y (en) * | 2002-03-25 | 2003-01-15 | 济南市冶金科学研究所 | Drying box using steam |
| CN101628779A (en) * | 2009-08-21 | 2010-01-20 | 北京大学 | Method and device for drying sludge by utilizing high-temperature steam |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008117624A1 (en) * | 2007-03-28 | 2008-10-02 | Ngk Insulators, Ltd. | Method of drying honeycomb molding, and drying apparatus therefor |
| PL211481B1 (en) * | 2007-05-30 | 2012-05-31 | Int Tobacco Machinery Poland | The manner of increase of efficiency of dryer, especially stream dryer |
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2011
- 2011-03-02 CN CN 201110050055 patent/CN102183137B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1040263A (en) * | 1988-08-11 | 1990-03-07 | 阿尔斯特罗姆弗列塔根瑞典公司 | Equipment and method from wet fuel generation steam |
| CN2531339Y (en) * | 2002-03-25 | 2003-01-15 | 济南市冶金科学研究所 | Drying box using steam |
| CN101628779A (en) * | 2009-08-21 | 2010-01-20 | 北京大学 | Method and device for drying sludge by utilizing high-temperature steam |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2009-60889A 2009.03.26 |
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Address after: D, Xiao Lu 58A, 41 Stubbs Road, Hongkong, China Patentee after: Xu Bin Address before: 518000, Shenzhen, Guangdong, Luohu District Province spring road, Jia Jia garden, 15 A4 Patentee before: Xu Bin |
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