CN207962687U - Alkali recovery boiler soot cleaning system - Google Patents
Alkali recovery boiler soot cleaning system Download PDFInfo
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- CN207962687U CN207962687U CN201820352602.7U CN201820352602U CN207962687U CN 207962687 U CN207962687 U CN 207962687U CN 201820352602 U CN201820352602 U CN 201820352602U CN 207962687 U CN207962687 U CN 207962687U
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- recovery boiler
- alkali recovery
- cleaning system
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Abstract
Alkali recovery boiler soot cleaning system, including shade screen, moveable joint-cutting device and moveable drill steel hammer；Shade screen includes screen body（2）, with screen body（2）The pipe clamp of connection（3）；Joint-cutting device includes the first rack（4）, with the first rack（4）The cutter of connection（5）, cutter shield（6）, the first control stick（8）, positioning guiding plate（9）, with cutter（5）The driving mechanism of connection（7）；Drill steel hammer includes the second rack（10）, with the second rack（10）The upright bar of connection（11）, with upright bar（11）The jump bit being slidably connected（12）, with jump bit（12）The de- hitch gear being detachably connected（13）, touch bar（14）, with upright bar（11）The pulley of connection（15）, push rod, cylinder or hydraulic cylinder（16）, steel wire rope（17）, with the second rack（10）The drill rod connected by sliding sleeve（18）, with the second rack（10）Second control stick of connection（19）.
Description
Technical field
The utility model is related to pulping and paper making chemistry product recovery technology fields, and alkali recovery boiler is used for more particularly, to one kind
The soot cleaning system of deashing.
Background technology
In slurrying production process, black liquor burns in alkali recovery boiler.The task of alkali recovery boiler includes to chemicals
Recycling and the thermal energy to generating in combustion recycling.
Alkali recovery boiler includes the stove for being supplied to air needed for black liquor and burning.Alkali recovery boiler is modern slurrying enterprise
Important equipment, investment is big, plays an important roll to the continuous operation of slurrying.With the development of technology, current large-scale alkali collection
Boiler can meet the requirement of pulping production line continuous operation in alkali recovery, the thermal efficiency, cycle of operation etc..
However, to partly still in the domestic first generation full water cooling wall alkali recovery boiler of operation, such as ZHP4 type alkali collection pots
Stove, because of the problem of considering project cost, chamber design height is low, and flue gas temperature of hearth outlet is higher, easily causes Fei Sidun
At pipe melt flying dust form lump, when ash accumulation to a certain extent, the normally circulation that may result in flue gas is hindered, alkali return
Receiving boiler for producing ability reduces, and cannot maintain the normal production of system, need blowing out deashing.In deashing process, general way
Be first blowing out for a period of time, so that burner hearth is cooled down, then open manhole door, manhole door periphery is first cleared up by the way of artificial
Flying dust caking, people enters deashing in alkali recovery boiler from manhole door, opens air-introduced machine in deashing process, when deashing general two people
One group enters in stove in turn, relies on using tool operations such as drill rod and iron hammers, in deashing process and manually completes.Because of deashing position
At the partition wall between furnace outlet and heat-exchanging tube bundle at the top of alkali recovery boiler, there are temperature height, dust is big, faces high-altitude
Fall object, the problem that security risk is big, labor intensity is high, personnel can only the short-term operation in stove, thus the deashing time is long.Deashing at
For high-risk operations one big to operator's health effect and that security risk is larger, blowing out deashing, can influence to give birth to each time
Production 2~3 days.Therefore how to improve operating efficiency, shorten the blowing out deashing time, solve alkali recovery boiler deashing security risk, with
And how labor intensity is reduced, it is urgent need to solve the problem.
Utility model content
It can improve alkali recovery boiler deashing environment the technical problem to be solved by the utility model is to provide a kind of, improve clear
Grey efficiency reduces the alkali recovery boiler soot cleaning system and alkali recovery boiler ash removal method of deashing labor intensity.
In order to solve the above-mentioned technical problem, the utility model provides a kind of alkali recovery boiler soot cleaning system, including be used for
Shade screen, moveable joint-cutting device and the moveable drill steel hammer that furnace outlet boiler tubing is detachably connected；The gear shield
Screen include rollable screen body, the pipe clamp being connect with screen body one end, the fixation bandage being connect with the screen body other end or
Pipe clamp；The joint-cutting device includes the first rack, the cutter being connect with first rack by shaft, with first machine
The cutter shield of frame connection, the driving mechanism being connect with the rotating shaft transmission of the cutter are connect with first rack
First control stick, the positioning guiding plate being connect with first rack；Drill steel hammer includes the second rack, first end with it is described
Second rack connection upright bar, the jump bit being slidably connected with the upright bar, be detachably connected with the jump bit and with it is described
The de- hitch gear that upright bar is slidably connected connect the touching bar to break off relations for triggering de- hitch gear with the upright bar, and described
The pulley of the other end connection of upright bar, push rod, cylinder or the hydraulic cylinder being connect with second rack, first end are pushed away with described
Bar, cylinder or hydraulic cylinder connection, the other end bypass the steel wire rope being connect with the de- hitch gear after pulley, are located at the punching
The lower section of hammer, the drill rod being connect by sliding sleeve with second rack, the second control stick being connect with second rack.
As the improved technology scheme of the utility model, alkali recovery boiler soot cleaning system provided by the utility model is described
Pipe clamp includes clamp seat；First end is hinged with the clamp seat, and the other end has the clamping block of U-type groove；One end and the pipe clamp
The hinged bolt of seat；It is connect with the clamp seat, the lifting lug for being connect with screen body.
As the improved technology scheme of the utility model, alkali recovery boiler soot cleaning system provided by the utility model is described
The body of magnetic material that shade screen also has the embedded screen internal.
As the improved technology scheme of the utility model, alkali recovery boiler soot cleaning system provided by the utility model is described
There is the umbrella shape shank for being connect with de- hitch gear at the top of jump bit；There is the de- hitch gear hammer body, setting to exist
On the hammer body for umbrella shape shank by through-hole, the first hook of first end and the hammer body pivot joint, both ends respectively with institute
State hinged the first compressed spring of the other end of hammer body and the first hook, the second hook of first end and hammer body pivot joint, two
The second compressed spring for holding the other end linked up with respectively with the hammer body and second hinged, the nearly first compression bullet of the first hook
Spring end, second hook nearly second compressed spring end are equipped with inclined surface, and two inclined surface constitute V-arrangement gap.
As the improved technology scheme of the utility model, alkali recovery boiler soot cleaning system provided by the utility model is described
The nearly jump bit side of upright bar is in axial direction equipped with slide bar, and the jump bit and de- hitch gear are respectively equipped with and the slide bar
The sliding sleeve being slidably connected.
As the improved technology scheme of the utility model, alkali recovery boiler soot cleaning system provided by the utility model is described
Joint-cutting device also has to be connect with the first rack, and cooling water is sprayed to the cooling water pipe of cutter.
Improvement project can be implemented alone or in combination.
In the prior art, personnel are needed to enter burner hearth because part dust stratification falls into burner hearth bottom in roof of the furnace deashing process
Bottom is raked off from alkali recovery boiler chute, otherwise can influence the normal boot-strap of alkali recovery boiler, extends deashing time and increasing
Labor intensity is added.The dust stratification property of alkali recovery boiler is influenced by combustion conditions, run time, the factors such as dust stratification position, different
The difference of the dust stratification property at operating condition and dust stratification position is very big, and some hard such as rock, some such as quicksands are made using common air inflating machine for dismantling tyre
When industry, although the drill steel of air inflating machine for dismantling tyre can be rapidly introduced into dust stratification layer, because of the performance and operating principle of air inflating machine for dismantling tyre, it is only capable of beating
Go out one and the comparable hole of drill steel diameter, the dust stratification of bulk cannot be agitated when agitating, working efficiency is extremely low.And manually using weight
Hammer strikes drill rod in dust stratification layer, and dust stratification layer cracking bulk can be made to fall off.Technical solution provided by the utility model, shade screen
On furnace outlet boiler tubing, dust stratification can be prevented to fall into burner hearth in deashing process, cleaning in stove can not be entered back into
The dust stratification of burner hearth bottom；Shade screen can also prevent the hot gas of furnace outlet and dust from entering personnel operation area, improve operation ring
Border；Improve the safety of operation.Dust stratification layer surface is cut into groove by joint-cutting device, and dust stratification is made to be easy to be agitated to fall off.Drill steel
Hammer into shape simulate manual work method, using weight strike drill rod, can obtain and artificial deashing similar in technique effect, make dust stratification
Layer cracking bulk falls off, and to improve operating efficiency, and reduces labor intensity.
Description of the drawings
Attached drawing is used to provide a further understanding of the present invention, and is constituted part of this application, the utility model
Illustrative embodiments and their description are not constituted improper limits to the present invention for explaining the utility model.In attached drawing
In：
Fig. 1 is embodiment alkali recovery boiler dust stratification status diagram；
Fig. 2 is the shade screen structural principle and schematic view of the mounting position of embodiment alkali recovery boiler soot cleaning system；
Fig. 3 is the pipe clamp structure principle schematic of embodiment alkali recovery boiler soot cleaning system；
Fig. 4 is the principle schematic diagram of the joint-cutting device of embodiment alkali recovery boiler soot cleaning system；
Fig. 5 is the principle schematic diagram that the drill steel of embodiment alkali recovery boiler soot cleaning system is hammered into shape；
Fig. 6 is the principle schematic diagram of the jump bit of embodiment alkali recovery boiler soot cleaning system drill steel hammer；
Fig. 7 is the principle schematic diagram of the de- hitch gear of embodiment alkali recovery boiler soot cleaning system drill steel hammer.
Specific implementation mode
The utility model is described in further detail below in conjunction with the accompanying drawings.
Alkali recovery boiler soot cleaning system as shown in Figures 2 to 7, including be used for detachable with furnace outlet boiler tubing 1
The shade screen of connection, moveable joint-cutting device and moveable drill steel hammer.Shade screen as shown in Figure 1 to Figure 3 includes rollable
Screen body 2, the pipe clamp 3 connect with screen body 2 one end, with the fixation bandage or pipe clamp for shielding 2 other end of body and connecting；As shown in figure 4, cutting
It includes the first rack 4, the cutter 5 being connect with the first rack 4 by shaft, the cutter being connect with the first rack 4 to stitch device
Shield 6, the driving mechanism 7 being connect with the rotating shaft transmission of cutter 5, the first control stick 8 being connect with the first rack 4, with first
The positioning guiding plate 9 that rack 4 connects；As shown in figure 5, drill steel hammer includes the second rack 10, first end is connect with the second rack 10
Upright bar 11, the jump bit 12 being slidably connected with upright bar 11 is detachably connected with jump bit 12 and is slidably connected with upright bar 11
De- hitch gear 13, the touching bar 14 for triggering the unhook of de- hitch gear 13, the other end with upright bar 11 are connect with upright bar 11
The pulley 15 of connection, the push rod being connect with the second rack 10, cylinder or hydraulic cylinder 16, first end and push rod, cylinder or hydraulic pressure
Oil cylinder 16 connects, and the other end bypasses the steel wire rope 17 that connect with de- hitch gear 13 after pulley 15, positioned at the lower section of jump bit 12,
The drill rod 18 being connect by sliding sleeve with the second rack 10, the second control stick 19 being connect with the second rack 10.Jump bit 12 and de-
It is connected by slide bar sliding sleeve between hitch gear 13 and upright bar 11, one of scheme is the nearly jump bit in upright bar 11
12 sides are in axial direction equipped with slide bar, and jump bit 12 and de- hitch gear 13 are respectively equipped with the cunning being connect with the sliding bar
Set.It is connected by slide bar sliding sleeve between jump bit 12 and de- hitch gear 13 and upright bar 11, when drill steel hammer is in skewed
When state, it still can be used, improve the flexibility and safety when use.The driving mechanism 7 of joint-cutting device can be electro-motor,
Hydraulic motor, air motor.First control stick 8, which is equipped with, manipulates the control switch that cutter 5 are run, and is set on the second control stick 19
There is the control of push control rod, cylinder or hydraulic cylinder 16 to switch.When jump bit 12 is encountered in the decline of de- hitch gear 13, hook is taken off
Mechanism 13 links into an integrated entity with jump bit 12, when push rod, cylinder or hydraulic cylinder 16 are shunk, takes off hitch gear 13 and drives impact
Hammer 12 rises, and after de- hitch gear 13 encounters touching bar 14, de- hitch gear 13 is detached with jump bit 12, the impact after separation
Hammer 12 strikes drill rod 18 under the effect of gravity.
When alkali recovery boiler deashing, blowing out for a period of time, is cooled to after personnel can enter after boiler, opens alkali collection pot
Stove manhole 22 is removed after 22 periphery of manhole and furnace interior divide dust stratification, and personnel enter in alkali recovery boiler, the shade screen that will wind up from
Manhole 22 is passed in alkali recovery boiler, and the pipe clamp 3 for shielding 2 one end of body is connect with furnace outlet boiler tubing 1, after screen body 2 is unfolded,
The other end arrives at dust stratification layer surface, and the fixation bandage for shielding 2 other end of body or pipe clamp are connect with furnace outlet boiler tubing 1；People
Work is removed at the top of alkali recovery boiler furnace outlet and after the dust stratification of side wall attachment and dust stratification layer surface dust stratification easy to fall off, by joint-cutting
Device is passed from manhole 22 in alkali recovery boiler, and external power supply pipeline is led through manhole 22 or alkali recovery boiler operation hole into alkali
It recycles in boiler, the driving mechanism 7 of joint-cutting device is connect with externally input power source pipeline, by the cutter of joint-cutting device
5 move to dust stratification layer surface, manipulate joint-cutting device, groove is cut into dust stratification layer surface；Drill steel hammer is passed from manhole 22 and is returned into alkali
It receives in boiler, external power supply pipeline is led through manhole 22 or alkali recovery boiler operation hole in alkali recovery boiler, drill steel is hammered into shape
Push rod, cylinder or hydraulic cylinder 16 connect with externally input power source pipeline, by drill steel hammer into shape drill rod 18 move to joint-cutting dress
It sets at the groove being cut into, manipulates drill steel hammer, a part for drill rod 18 is struck in dust stratification layer, hand steered second control stick 19 is prized
Dynamic drill rod 18, makes dust stratification fall off, and the dust stratification block to fall off is removed outside stove from manhole 22 or fallen after broken through alkali recovery boiler tube bank place
Enter in ash bucket.
In the prior art, personnel are needed to enter stove because part dust stratification falls into burner hearth bottom when removing the dust stratification of furnace outlet
Thorax bottom is raked off from alkali recovery boiler chute, otherwise can influence the normal boot-strap of alkali recovery boiler, extend the deashing time and
Increase labor intensity.Shade screen is mounted on furnace outlet boiler tubing 1, can be prevented in deashing process, dust stratification falls into burner hearth
It is interior, the dust stratification of burner hearth bottom is fallen into without entering back into cleaning in stove；Shade screen can also prevent furnace outlet hot gas and
Dust is directly entered personnel operation area, improves operating environment；Improve the safety of operation.It is cut in dust stratification layer surface with joint-cutting device
Groove is cut out, dust stratification is made to be easier to be agitated to fall off.The dust stratification characteristic of alkali recovery boiler is by combustion conditions, run time, dust stratification
The factors such as position influence, and the dust stratification property difference at different operating conditions and different location is very big, some hard such as rock, some as
Quicksand, when using common impact gun machine operation, although the drill steel of air inflating machine for dismantling tyre can rapidly enter in dust stratification layer in most cases, because of wind
The performance and operation principle of big gun machine are only capable of getting a hole, agitate around Shi Yinkong loosely, cannot agitate the dust stratification of bulk,
Working efficiency is extremely low.And manually struck drill rod in dust stratification layer using weight, impact mode can make dust stratification layer cracking bulk
It falls off.Drill steel hammers the method for simulating manual work into shape, and drill rod 18 is struck using weight, can obtain and technology similar in artificial deashing
Effect has higher operating efficiency, and reduces labor intensity.
Further, alkali recovery boiler soot cleaning system provided by the utility model, as shown in figure 3, pipe clamp 3 includes clamp seat
101；First end is hinged by hinged shaft with clamp seat 101, and the other end has the clamping block 102 of U-type groove；One end and clamp seat 101
Hinged bolt 103；It is connect with clamp seat 101, the lifting lug 104 for being connect with screen body 2.
Further, alkali recovery boiler soot cleaning system provided by the utility model, as shown in Fig. 2, shade screen is also with embedding
Enter to shield the body of magnetic material 20 in body 2.Body of magnetic material 20 is adsorbed on furnace outlet boiler tubing 1, further solid to screen body 2
It is fixed.
Further, alkali recovery boiler soot cleaning system provided by the utility model, as shown in Figure 6 and Figure 7, jump bit 12 push up
Portion has the umbrella shape shank 201 for being connect with de- hitch gear 13；There is de- hitch gear 13 hammer body 202, setting to hammer into shape
On body 201 for umbrella shape shank 201 by through-hole 203, the first hook 204 that first end and hammer body 202 are pivotally connected, both ends difference
204 the first hinged compressed springs 205 are linked up with hammer body 202 and first, first end and hammer body 202 is pivotally connected second links up with 206,
206 the second hinged compressed springs 207, first 204 nearly first compressed springs of hook are linked up with hammer body 202 and second respectively in both ends
205 ends, second 206 nearly second compressed spring, 207 ends of hook are equipped with inclined surface 208, and two inclined surface constitute V-arrangement gap.Umbrella shape
The top of shank 201 is tapered, and when de- hitch gear 13 declines, umbrella shape shank 201 is inserted into through-hole 203, in gravity
The tapering of umbrella shape shank 201 detaches the first hook 204 and the second hook 206 to two sides under percussion, the first hook 204
Behind the tapering for crossing umbrella shape shank 201 with the second hook 206, in the work of the first compressed spring 205 and the second compressed spring 207
Under, the first hook 204 and the second hook 206 mutually close up, after being caught in the neck of umbrella shape shank 201, by 12 He of jump bit
De- hitch gear 13 links into an integrated entity.When push rod, cylinder or hydraulic cylinder 16 drive jump bit 12 and de- hitch gear 13 to combine
Body rises together, and after de- hitch gear 13 encounters touching bar 14, touching bar 14 is inserted into V-arrangement gap, with de- hitch gear 13
Rising, touching bar 14 makes the first hook 204 and second hook 206 overcome the first compressed spring 205 or the second compressed spring 207
Elastic force be gradually disengaged, when first hook 204 and second hook 206 between gap be more than umbrella shape shank 201 diameter after,
Jump bit 12 is detached with de- hitch gear 13, and fall impact drill rod 18 under the effect of gravity.
Further, alkali recovery boiler soot cleaning system provided by the utility model, as shown in figure 4, joint-cutting device also has
It is connect with the first rack 4, cooling water is sprayed to the cooling water pipe 21 of cutter 5.When cutting, cooling water is sprayed to cutter（5）
It is cooled down with dust stratification layer.Temperature inside blowing out for a period of time inner product grieshoch is still higher, sometime up to hundreds of degree（Inner product
Ash is rubescent, and spontaneous radiation has reached the longest wave band in visible light）, when cooling water sprays into dust stratification layer, the dust stratification of high temperature makes cold
But water evaporates rapidly, and water absorb heat takes away the heat of dust stratification, by dust stratification layer penetrating cooling water, dust stratification being made to be quickly cooled down,
During being quickly cooled down, property also changes, and is more advantageous to and is broken.
For those skilled in the art, the present invention may have various modifications and changes.It is all new in this practicality
Within the spirit and principle of type claim, it is new to should be included in this practicality for any modification, equivalent replacement, improvement and so on
Within the protection domain of type.
Claims (6)
1. a kind of alkali recovery boiler soot cleaning system, which is characterized in that including being used for and furnace outlet boiler tubing（1）Detachably connect
The shade screen connect, moveable joint-cutting device, and moveable drill steel hammer；The shade screen includes the screen body of rollable（2）, with
The screen body（2）The pipe clamp of one end connection（3）, with the screen body（2）The fixation bandage or pipe clamp of other end connection；The joint-cutting
Device includes the first rack（4）, pass through shaft and first rack（4）The cutter of connection（5）, with first rack
（4）The cutter shield of connection（6）, with the cutter（5）Rotating shaft transmission connection driving mechanism（7）, with described first
Rack（4）First control stick of connection（8）, with first rack（4）The positioning guiding plate of connection（9）；The drill steel hammer packet
Include the second rack（10）, first end and second rack（10）The upright bar of connection（11）, with the upright bar（11）It is slidably connected
Jump bit（12）, with the jump bit（12）Be detachably connected and with the upright bar（11）The de- hitch gear being slidably connected
（13）, with the upright bar（11）Connection is for triggering de- hitch gear（13）The touching bar of unhook（14）, with the upright bar（11）
The other end connection pulley（15）, with second rack（10）Push rod, cylinder or the hydraulic cylinder of connection（16）, first end
With the push rod, cylinder or hydraulic cylinder（16）Connection, the other end bypass pulley（15）Afterwards with the de- hitch gear（13）Even
The steel wire rope connect（17）, it is located at the jump bit（12）Lower section, with second rack（10）The drill rod connected by sliding sleeve
（18）, with second rack（10）Second control stick of connection（19）.
2. alkali recovery boiler soot cleaning system according to claim 1, which is characterized in that the pipe clamp（3）Including clamp seat
（101）；First end and the clamp seat（101）Hinged, the other end has the clamping block of U-type groove（102）；One end and the pipe clamp
Seat（101）Hinged bolt（103）；With the clamp seat（101）Connection is used for and screen body（2）The lifting lug of connection（104）.
3. alkali recovery boiler soot cleaning system according to claim 1, which is characterized in that the shade screen also has embedded institute
State screen body（2）Interior body of magnetic material（20）.
4. alkali recovery boiler soot cleaning system according to claim 1, which is characterized in that the jump bit（12）Top has
For with de- hitch gear（13）The umbrella shape shank of connection（201）；The de- hitch gear（13）With hammer body（202）If
It sets in the hammer body（202）On for umbrella shape shank（201）By through-hole（203）, first end and the hammer body（202）Pivot joint
First hook（204）, both ends respectively with the hammer body（202）With the first hook（204）The other end it is hinged first compression
Spring（205）, first end and the hammer body（202）Second hook of pivot joint（206）, both ends respectively with the hammer body（202）With
Second hook（206）Hinged the second compressed spring of the other end（207）, first hook（204）Nearly first compressed spring
（205）End, the second hook（206）Nearly second compressed spring（207）End is equipped with inclined surface（208）, two inclined surface constitute V-arrangement and slit
Mouthful.
5. alkali recovery boiler soot cleaning system according to claim 1 or 4, which is characterized in that the upright bar（11）Nearly punching
Hammer（12）Side is in axial direction equipped with slide bar, the jump bit（12）With de- hitch gear（13）It is respectively equipped with and the cunning
The sliding sleeve that bar is slidably connected.
6. alkali recovery boiler soot cleaning system according to claim 1, which is characterized in that the joint-cutting device also has and the
One rack（4）Connection, cutter are sprayed to by cooling water（5）Cooling water pipe（21）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820352602.7U CN207962687U (en) | 2018-03-15 | 2018-03-15 | Alkali recovery boiler soot cleaning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820352602.7U CN207962687U (en) | 2018-03-15 | 2018-03-15 | Alkali recovery boiler soot cleaning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207962687U true CN207962687U (en) | 2018-10-12 |
Family
ID=63743369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820352602.7U Expired - Fee Related CN207962687U (en) | 2018-03-15 | 2018-03-15 | Alkali recovery boiler soot cleaning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207962687U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108194936A (en) * | 2018-03-15 | 2018-06-22 | 长沙理工大学 | Alkali recovery boiler soot cleaning system and alkali recovery boiler ash removal method |
-
2018
- 2018-03-15 CN CN201820352602.7U patent/CN207962687U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108194936A (en) * | 2018-03-15 | 2018-06-22 | 长沙理工大学 | Alkali recovery boiler soot cleaning system and alkali recovery boiler ash removal method |
| CN108194936B (en) * | 2018-03-15 | 2023-04-25 | 长沙理工大学 | Alkali recovery boiler ash removal system and alkali recovery boiler ash removal method |
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Granted publication date: 20181012 Termination date: 20200315 |