CN114453867B - Construction method of analytic tower - Google Patents
Construction method of analytic tower Download PDFInfo
- Publication number
- CN114453867B CN114453867B CN202111462629.4A CN202111462629A CN114453867B CN 114453867 B CN114453867 B CN 114453867B CN 202111462629 A CN202111462629 A CN 202111462629A CN 114453867 B CN114453867 B CN 114453867B
- Authority
- CN
- China
- Prior art keywords
- crane
- module
- section
- tower
- section module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
- B66C13/08—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention provides a construction method of a desorption tower, wherein the desorption tower comprises a cooling section, a heating section and an integral flow discharging section, and the construction method of the desorption tower comprises the following steps: installing frameworks corresponding to the integral flow discharge section, the cooling section and the heating section; taking the heating section as an upper section module, and taking the cooling section and the integral drainage section as a lower section module; hoisting the top end of one module by taking a crawler crane as a main crane and hoisting the tail end of one module by taking a truck crane as an auxiliary crane; a main crane lifts a module and an auxiliary crane delivers the module, and the module is synchronously reversed from a horizontal type to a vertical type; and after the upper section module and the lower section module are hoisted in place, welding the upper section module and the lower section module. The construction method of one machine main crane and one machine delivery is adopted, the overall stability is good, and the equipment deformation is avoided.
Description
Technical Field
The invention relates to the technical field of large-scale tower body hoisting construction, in particular to a construction method of an analytic tower.
Background
Currently, three environmental issues facing the world include: the first is the greenhouse effect, the root cause of which is mainly from CO 2 、CH 4 、N 2 O, and the like. The second is acid rain (commonly called acid rain), the root of which is mainly from SO 2 NOx, and the like. The third dimension ozone layer destruction, the root of which is mainly from CCIF and NO x And the like.
From the above data, the key to the atmospheric pollution control is to reduce the emission of sulfur dioxide, nitrogen oxide, and dioxin. Therefore, energy enterprises are required to improve the technology and increase desulfurization and denitrification and dust removal equipment so as to reduce the emission of air pollutants. At present, the most advanced technology of activated carbon method and SCR method desulfurization and denitration at home and abroad can reach the ultra-low emission standard, and the installation quality of a large-scale analytic tower serving as main equipment for activated carbon regeneration and a main place for removing harmful substances such as dioxin at high temperature is extremely important in the whole system installation process.
The structure of the regeneration desorption tower comprises a particle conveying oxygen-blocking device, a cooling section, a heating section, an integral flow discharging device and the like. Wherein the cooling section and the heating section are both tube type heat exchangers, and the active carbon in the heating section is heated at high temperature to generate an analytic reaction and is carried out of the tower along with nitrogen to form SRG gas. The cooling section is cooled by active carbon, so that transportation and reuse are facilitated. The integral flow discharging device has a special structure, and ensures that the activated carbon in the desorption tower is always in an integral uniform discharging state in the discharging process.
However, as the flue gas purification facilities are mostly reconstructed and expanded projects in later periods, the construction land is often extremely narrow, and the installation of the large-scale modular unit is a serious difficulty in engineering construction.
In the conventional technology, each structure of the analytic tower is divided into dozens of parts, so that the assembly is complicated, the construction is inconvenient, the overall stability is poor, and the deformation is easily caused.
Disclosure of Invention
The present invention has been made to solve the above-mentioned problems occurring in the prior art, and the present invention provides a method for constructing a desorption tower including a heating section, a cooling section, and an overall flow discharge section, the method comprising:
installing frameworks corresponding to the integral flow discharge section, the cooling section and the heating section;
taking the heating section as an upper section module, and taking the cooling section and the integral drainage section as a lower section module;
a crawler crane is used as a main crane to hoist the top end of the lower section module, and a truck crane is used as an auxiliary crane to hoist the tail end of the lower section module;
the main hoisting device hoists the lower section module to deliver the lower section module in an auxiliary hoisting manner, and synchronously finishes the inversion of the lower section module from the horizontal type to the vertical type;
hoisting the lower section module in place through a main crane;
a crawler crane is adopted as the top end of the upper section module hoisted by the main crane, and a truck crane is adopted as the tail end of the upper section module hoisted by the auxiliary crane;
the main hoisting hoists the upper section module to deliver the auxiliary hoisting, and synchronously finishes the inversion of the upper section module from horizontal to vertical;
hoisting the upper section module in place through a main crane;
and after the upper section module and the lower section module are hoisted in place, welding the upper section module and the lower section module.
Optionally, the method for constructing a desorption tower further comprises:
installing a crawler crane and a truck crane;
determining the station vehicle positions of the crawler crane and the truck crane and the arm length in the overturning process according to the station vehicle position of the analysis tower transport vehicle;
determining rated lifting capacity of the crawler crane and the truck crane, wherein the single machine load does not exceed 80% of the rated lifting capacity;
and the upper section module or the lower section module is changed from the horizontal posture to the vertical posture by utilizing the reverse change process of the arm length and the amplitude of the crawler crane and the truck crane, and then the overturning is completed.
Optionally, the method for constructing a desorption tower further comprises:
the framework is installed to the analysis tower at a position high, the crawler crane of the main crane adopts a crawler crane of the main crane, and a lifting appliance is installed on the crawler crane;
determining the station vehicle position of the main crane crawler crane according to the in-position of the upper module or the lower module to be hoisted;
paving a roadbed box plate on a station vehicle walking route of the main crane crawler crane;
determining the arm length of the main hoisting crawler crane according to the in-place height, the module size, the sling height and the station vehicle position of the upper section module or the lower section module to be hoisted, and determining the rated lifting capacity of the crane according to the amplitude and the arm length and the characteristic curve of the main hoisting crawler crane;
determining the calculated load of the hoisting according to the maximum load of the upper section module or the lower section module and the weight of the lifting appliance, and adjusting the rated load lifting capacity of the crane according to the calculated load so that the rated load lifting capacity of the crane is larger than the calculated load;
determining the station position of the transport vehicle according to the determined station position of the main crane crawler crane;
the upper section module or the lower section module is changed from a horizontal posture to a vertical posture by using a main crane crawler crane and an auxiliary crane truck crane;
and after the upper section module or the lower section module is completely erected, the auxiliary crane truck crane exits from hoisting, and the main crane crawler crane hoists the top end of the completely erected module to hoist the module in place.
Optionally, the upper module further comprises a transition section that exits the sulfur-containing gas to an acid making system.
Optionally, the lower section module further comprises a nitrogen interface, which is connected with the cooling section and the integral flow discharge section, and is used for inputting nitrogen, so as to play a role in flame retardance and heat transfer.
Optionally, the desorption tower further comprises a discharge bin, and the discharge bin is an activated carbon outlet.
Optionally, the desorption tower further comprises a top bin, and the top bin is an activated carbon inlet.
Optionally, the analysis tower sequentially comprises a top bin, a heating section, a transition section, a cooling section, an overall flow discharge section, a lower bin and an activated carbon vibrating screen from top to bottom, the upper section module comprises the heating section and the transition section, the lower section module comprises the cooling section and the overall flow discharge section, the top bin and the upper section module are a left chamber of the analysis tower, the lower section module is a right chamber of the analysis tower, and the construction method of the analysis tower comprises the following steps:
installing an active carbon vibrating screen;
taking the cooling section and the integral flow discharge section as a lower section module, and installing a framework of the lower section module;
adopting a crawler crane as a main crane truck crane as an auxiliary crane to hoist the lower section module;
installing a framework of the transition section;
installing a framework of the heating section;
and taking the heating section and the transition section as upper section modules, and taking the crawler crane as a main crane truck crane as an auxiliary crane hoisting upper section module.
Optionally, after the step of hoisting the upper section module by using the crawler crane as a main crane truck crane as an auxiliary crane, the method further comprises:
installing a limiting and guiding device of the resolving tower;
installing an air inlet and an air outlet of the desorption tower for heating air and cooling air;
installing a round roller of the resolution tower;
the installation is analytic tower top feed bin, lower feed bin and bypass device, top feed bin and lower feed bin are the valves that rotary valve and gate valve are constituteed, bypass device is the unloading chute that one section behind the feed bin does not pass through analytic tower down.
Optionally, the method for constructing a desorption tower further comprises: and carrying out air tightness test on the desorption tower, wherein the air tightness test comprises the following steps:
the method comprises the steps of tube pass detection and shell pass detection, wherein the tube pass detection comprises detection of an analysis tower and an analysis tower top bin, the shell pass detection is matched with a hot air pipeline for detection, a continuous pressurization method is adopted for detection in an analysis tower airtightness test, the maximum pressure is 10KPa, a grinding box pressure gauge with the measuring range of 25KPa is used as a detection pressure gauge, soap water is used for visual detection, the pressure is maintained for 30 minutes after the airtightness of the analysis tower is finished, and no pressure drop is qualified.
Optionally, the method for constructing a desorption tower further comprises:
and (5) installing an insulating layer of the desorption tower.
According to the construction method of the analytic tower, the large analytic tower equipment is hoisted by adopting a construction method of one main crane and one machine for delivery, so that the overall stability is good, and the equipment deformation is avoided. The continuous construction quality of the field installation of the disassembled modular equipment for factory processing is ensured. And an integral hoisting technology is adopted, so that the connection error among all related equipment is avoided, and the interface quality and the installation progress are ensured. The method overcomes the influence of adverse factors such as limited site and the like, and is suitable for hoisting and popularizing various devices such as medium and large-sized towers in reconstruction and extension.
Drawings
FIG. 1 is a schematic view of a flow diagram of a method of construction of a resolution tower according to the present invention;
FIG. 2 is a schematic diagram of a lifting plan layout of the analytical tower equipment in a narrow space.
Detailed Description
FIG. 1 is a schematic representation of a flow diagram of a method of operating a desorption tower of the present invention, as shown in FIG. 1, comprising a cooling section, a heating section, and an integrated flow discharge section, the method comprising:
s1, installing frameworks corresponding to an integral flow discharge section, a cooling section and a heating section;
s2, taking the heating section as an upper section module, and taking the cooling section and the integral drainage section as a lower section module;
s3, adopting a crawler crane as a main crane to hoist the top end of the lower section module, and adopting a truck crane as an auxiliary crane to hoist the tail end of the lower section module;
s4, the main crane lifts the lower section module to deliver the auxiliary crane, and the lower section module is synchronously reversed from the horizontal type to the vertical type;
s5, hoisting the lower section module in place through a main crane;
s6, adopting a crawler crane as the top end of the upper section hoisting module of the main crane and adopting a truck crane as the tail end of the upper section hoisting module of the auxiliary crane;
s7, the main crane lifts the upper section module to deliver the auxiliary crane, and the horizontal-to-vertical inversion of the upper section module is synchronously completed;
s8, hoisting the upper section module in place through a main crane;
and S9, after the upper section module and the lower section module are hoisted in place, welding the upper section module and the lower section module.
In one embodiment, the above method for constructing a desorption tower further comprises:
installing a crawler crane and a truck crane;
determining the station vehicle positions of the crawler crane and the truck crane and the arm length in the overturning process according to the station vehicle position of the analysis tower transport vehicle;
determining rated lifting capacity of the crawler crane and the truck crane, wherein the single machine load does not exceed 80% of the rated lifting capacity; and the upper section module or the lower section module is changed from the horizontal posture to the vertical posture by utilizing the reverse change process of the arm length and the amplitude of the crawler crane and the truck crane, and then the overturning is completed.
In one embodiment, the method of analytic tower construction further comprises:
the framework is installed to the analysis tower at a position high, the crawler crane of the main crane adopts a crawler crane of the main crane, and a lifting appliance is installed on the crawler crane;
determining the station position of the main crane crawler crane according to the in-position of the upper section module or the lower section module to be hoisted;
paving a roadbed box board on a station vehicle traveling route of the main crane crawler crane;
determining the arm length of the main hoisting crawler crane according to the in-place height, the module size, the sling height and the station vehicle position of the upper section module or the lower section module to be hoisted, and determining the rated lifting capacity of the crane according to the amplitude and the arm length and the characteristic curve of the main hoisting crawler crane;
determining the calculated load of the hoisting according to the maximum load of the upper section module or the lower section module and the weight of the lifting appliance, and adjusting the rated load lifting capacity of the crane according to the calculated load so that the rated load lifting capacity of the crane is larger than the calculated load;
determining the station position of the transport vehicle according to the determined station position of the main crane crawler crane;
the upper section module or the lower section module is changed from a horizontal posture to a vertical posture by using a main crane crawler crane and an auxiliary crane truck crane;
and after the upper module or the lower module is completely erected, the auxiliary crane truck crane exits from hoisting, and the main crane crawler crane hoists the top end of the completely erected module to hoist the module in place.
Preferably, the rated load capacity of the crawler crane as main crane is greater than the rated load capacity of the auxiliary truck crane for delivery.
Preferably, the main crane crawler crane comprises a structural bearing beam, a fixed support and a sliding support, wherein the structural bearing beam is used for installing a module of the resolution tower, and the fixed support and the sliding support are used for adjusting the elevation and the levelness in module installation.
In one embodiment, the lifting appliance comprises lifting frames, carrying poles and lifting lugs, the geometrical form of each lifting frame is the same as the geometrical form of the interface position of two sections of the module, the lifting lugs are arranged on the side faces of the lifting frames, the upper end and the lower end of one module are respectively provided with one lifting frame, the lifting frames are connected to the module through fixing parts, the crawler crane lifts the top lifting frame through the carrying poles, and the auxiliary truck crane lifts the tail lifting frame through the carrying poles.
In another embodiment, the lifting appliance comprises a first outer frame and a second outer frame, the first outer frame and the second outer frame both correspond to the shape of the analysis tower, a slide rail is arranged in the first outer frame, the second outer frame can slide in the first outer frame, and a lock is arranged on one side of the first outer frame and one side of the second outer frame, which face the analysis tower module section.
Preferably, one side of the first outer frame and one side of the second outer frame facing the parsing tower module section are grooves, the surface and the lower surface of the module section are provided with protrusions, and grooves are correspondingly formed in other module sections butted with the module sections, so that locking and hoisting are achieved, and meanwhile automatic alignment can be achieved, for example, the lock is an F-TR-like lock head.
In one embodiment, the upper module further comprises a transition section that exits the sulfur-containing gas to an acid making system.
In one embodiment, the lower section module further comprises a nitrogen interface which is connected with the cooling section and the integral flow discharge section and used for inputting nitrogen, and the nitrogen interface plays a role in flame retardance and heat transfer.
In one embodiment, the desorption tower further comprises a blanking bin which is an activated carbon outlet.
In one embodiment, the desorption tower further comprises a top bin, and the top bin is an activated carbon inlet.
In one embodiment, the analysis tower sequentially comprises a top bin, a heating section, a transition section, a cooling section, an integral flow discharge section, a lower bin and an activated carbon vibrating screen from top to bottom, an upper section module comprises the heating section and the transition section, a lower section module comprises the cooling section and the integral flow discharge section, the top bin and the upper section module are left chambers of the analysis tower, the lower section module is right and right chambers of the analysis tower, and the construction method of the analysis tower comprises the following steps:
installing an active carbon vibrating screen;
taking the cooling section and the integral flow discharge section as a lower section module, and installing a framework of the lower section module;
adopting a crawler crane as a main crane truck crane as an auxiliary crane to hoist the lower section module;
installing a framework of the transition section;
installing a framework of the heating section;
and taking the heating section and the transition section as upper section modules, and taking the crawler crane as a main crane truck crane as an auxiliary crane hoisting upper section module.
Preferably, after the step of using the crawler crane as a main crane truck crane as an auxiliary crane to hoist the upper section module, the method further comprises the following steps:
installing a limiting and guiding device of the resolving tower;
installing an air inlet and an air outlet of the desorption tower for heating air and cooling air;
installing a round roller of the resolution tower;
the method comprises the following steps of installing an analytic tower top bin, a discharging bin and a bypass device, wherein the top bin and the discharging bin are valve groups formed by a rotary valve and a gate valve, and the bypass device is a discharging chute which is not arranged in a section behind the discharging bin and does not pass through the analytic tower.
Preferably, the construction method of the desorption tower further comprises the following steps: and carrying out air tightness test on the desorption tower, wherein the air tightness test comprises the following steps:
the method comprises the steps of tube pass detection and shell pass detection, wherein the tube pass detection comprises detection of an analysis tower and an analysis tower top bin, the shell pass detection is matched with a hot air pipeline for detection, a continuous pressurization method is adopted for detection in an analysis tower airtightness test, the maximum pressure is 10KPa, a grinding box pressure gauge with the measuring range of 25KPa is used as a detection pressure gauge, soap water is used for visual detection, the pressure is maintained for 30 minutes after the airtightness of the analysis tower is finished, and no pressure drop is qualified.
Preferably, the construction method of the desorption tower further comprises the following steps: and (5) installing an insulating layer of the desorption tower.
In one embodiment, the single module (upper module or lower module) of the resolving tower is turned from the horizontal posture to the vertical posture through the cooperation of a crawler crane as a main crane and an auxiliary truck crane as delivery vehicles; and then, the single module hoisting is completed by the crawler crane of the main crane alone, the single module hoisting is completed by the single module hoisting to the adjusted framework, wherein the single module is jacked by a plurality of hydraulic jacks, and the levelness is adjusted to ensure that the upper module and the lower module are horizontally aligned and connected.
Preferably, the construction method of the desorption tower further comprises the following steps:
modeling the control voltage and output displacement of each hydraulic jack by
Wherein j and i are indexes of the hydraulic jacks, N is the total number of the hydraulic jacks, and u i (t) represents the control voltage input of the ith hydraulic jack, y i (t) denotes the i-th hydraulic jack output displacement, y j (t) represents the output displacement of the jth hydraulic jack, a i 、b i And c i Is a model parameter;
each hydraulic jack is wirelessly connected with other hydraulic jacks;
acquiring the output displacement of each hydraulic jack, and acquiring the control voltage of each hydraulic jack according to the control voltage and the output displacement model through the output displacement;
when no output displacement of the hydraulic jack exists or the difference value between the output displacement and other jacks exceeds a set threshold value, the control voltage of the hydraulic jack is set to be 0, and new control voltages of other jacks are obtained through a control voltage and output displacement model, so that the plurality of hydraulic jacks can lift the lower section of the module in a balanced manner to ensure the levelness in the lifting process.
In one embodiment of the present invention, as shown in fig. 2, the desorption tower equipment has a large single body and a large single weight, so that the whole production and transportation are difficult. Meanwhile, in order to meet the requirement of integral air tightness, the equipment is divided into an upper section module and a lower section module in an entrance, namely, the heating section and the transition section are the upper section module, the cooling section and the integral material flowing and discharging section are the lower section module, the analysis tower is divided into two modules in an entrance, the upper section module and the lower section module are respectively hoisted and welded to the position of the interface after being positioned, and the air tightness is ensured.
In one embodiment, the external dimension of the upper module is 17700mm × 5500mm × 3840mm, and the external dimension of the lower module is 9770mm × 4950mm × 3300mm. The two modules are horizontally ultra-wide and ultra-long vehicle transportation approaches, and hoisting is carried out by adopting a double-vehicle coordination centralization hoisting scheme of one main crane and one machine delivery.
In one embodiment, the construction method of the resolution tower comprises the following steps:
first, preparation before hoisting includes:
(1) The cooling section of the lower section module of the analytic tower and the integral flow discharge section are installed with corresponding frameworks to corresponding installation heights before being hoisted, and the frameworks are installed to corresponding positions before the heating section of the upper section module of the analytic tower is hoisted, and the bearing plane beam is adjusted, inspected and welded.
(2) The preparation of the hoisting machine tool, the rigging of the equipment manufacturer and the temporary device is finished, and the safety inspection is qualified.
(3) The sliding block is installed in place before hoisting, and the flatness of the top of the sliding block meets the design requirement.
Secondly, for the hoisting of the analysis tower, taking the narrow space as the following figure as an example, as shown in fig. 2, a planned analysis tower crane station parking space is an open space position on one side of the analysis tower, and a roadbed box board is laid on the main crane walking line. The maximum load of the hoisting equipment is 147.2 tons of the single weight of the part I, 2.2 tons of the hoisting frame and 4 tons of the carrying pole, and the crawler crane SCC4000C (400 tons) hoisting with super-lifting working condition (160 tons of hoisting load containing hook heads) can be used as the main crane. The device can occupy roads in south-east-west directions in the processes of getting off and righting in the hoisting process.
Considering 400 tons of crawler crane station vehicle positions, in fig. 2, the area 1# and the area 2# both comprise an analytic tower, a primary adsorption area, a secondary adsorption area, an activated carbon storage bin and a flue gas support, and a hoisting area for hoisting the 400 tons of crawler crane is fully paved with steel slag between the analytic towers of the area 1# and the area 2# so as to ensure that a hoisting field is smooth. In the figure 2, a 400-ton crawler hoisting turning radius is 19.6m, a staircase with a radius distance 2# of a super-lifting tray 3 of the 400-ton crawler crane keeps a safe distance of 600mm, a transport vehicle is parked on a east-west road on the south side of the analytic tower frame, and the head of the transport vehicle faces to the east side. The main crane and the tail-sliding vehicle (as a station vehicle of the delivery auxiliary truck crane) are lifted in parallel, are rightly arranged and are ready for hoisting, the transport vehicle is driven forwards in time after the two vehicles are lifted and hoisted, and the tail-sliding crane (as the delivery auxiliary truck crane) is a 300-ton truck crane. In the equipment alignment process, limited by the hoisting site, 300 tons of tail sliding truck cranes can only stand on the rear side of a component vehicle, 400 tons of tracks are hung well in an overhung mode, a rotating rod is arranged at a specified hoisting position (the hoisting position is that the position of a vehicle head is on a circle with the radius of 19.6 m), the transport vehicle carries equipment, enters a hoisting area and completes the installation of a tail sliding truck hanging frame on the lower part, 400 tons of tracks are lifted upwards vertically, the tail sliding truck cranes slowly lift hooks and crouch down the rod (the track cranes are not movable), and after the tail sliding truck is separated from the transport vehicle by a distance larger than 500mm, the transport vehicle safely exits. And then the 400-ton truck crane continues to slowly lift the hook, the 300-ton truck crane continues to lift the hook and lay the hook, the hook slowly falls 280 tons before the 300 tons reach the lifting limit value, the hanging frame under the equipment is contacted with the ground, and at the moment, the equipment is in an inclined state. And then the 300-ton truck crane is retracted and moved to the position near the equipment again, the hook is hooked, the swinging and hoisting process is repeated with the 400 tons, finally the equipment is swung, the 300-ton truck crane exits from hoisting, an operator removes the hoisting frame, the 400 tons of truck crane is hoisted to the installation safety height, then the hook falls into place, and the hoisting is completed.
Thirdly, hoisting the resolving tower, specifically comprising:
(1) The heaviest hoisting is 147.2 tons of the upper section module of the desorption tower, and a hoisting method of one main crane and one machine for delivery is adopted. A main crane selects a 400-ton crawler crane, and a tail sliding crane selects a creep 300-ton truck crane. The weight of the lifting frame of the resolution tower is 2.2 tons, the weight of the lifting carrying pole is 4 tons, the weight of the hook head is about 5 tons, and the total weight is 1.1 x (147.2 +2.2+4+ 5) =174.24 tons.
(2) Determining the arm length and the radius of the crawler crane through a QUY400 crawler crane performance table;
(3) The maximum hoisting height is 70m, the maximum turning radius is 19.6 (20) m and the main arm length is 72 m according to hoisting and lofting. According to a crane lifting performance curve table, the rated lifting capacity of a 400-ton crawler crane has a turning radius of 20 meters, and the rated lifting capacity of a main arm with the length of 72 meters is 188 tons and more than 174.24 tons. The requirement of the hoisting operation is met. The safe distance between the lofting device and the lifting hook and the lifting arm can meet the requirement of the lifting operation.
The construction method of the analytic tower only divides the module into two sections of modules, can well reflect the processing precision of factory manufacturing by adopting the integral hoisting technology, simultaneously adopts the large-module manufacturing, transportation and double-vehicle righting method of one main crane and one delivery, greatly saves various construction costs, improves the production efficiency and saves the construction period.
While the foregoing disclosure shows illustrative embodiments of the invention, it should be noted that various changes and modifications could be made herein without departing from the scope of the invention as defined by the appended claims. The functions, steps and/or actions of the method claims in the embodiments of the invention described herein need not be performed in any particular order. Furthermore, although elements of the invention may be described or claimed in the singular, the plural is contemplated unless limitation to the singular is explicitly stated.
Claims (9)
1. A construction method of a desorption tower comprises a heating section, a cooling section and an integral flow discharging section, and is characterized by comprising the following steps:
installing frameworks corresponding to the integral flow discharge section, the cooling section and the heating section;
taking the heating section as an upper section module, and taking the cooling section and the integral flow discharge section as a lower section module;
a crawler crane is used as a main crane to hoist the top end of the lower section module, and a truck crane is used as an auxiliary crane to hoist the tail end of the lower section module;
the main hoisting device hoists the lower section module to deliver the lower section module in an auxiliary hoisting manner, and synchronously finishes the inversion of the lower section module from the horizontal type to the vertical type;
hoisting the lower section module in place through a main crane;
a crawler crane is adopted as the top end of the upper section module hoisted by the main crane, and a truck crane is adopted as the tail end of the upper section module hoisted by the auxiliary crane;
the main hoisting hoists the upper section module to deliver the auxiliary hoisting, and synchronously finishes the inversion of the upper section module from horizontal to vertical;
hoisting the upper section module in place through a main crane;
after the upper section module and the lower section module are hoisted in place, the upper section module and the lower section module are welded,
the analysis tower from the top down includes in proper order that top feed bin, heating section, changeover portion, cooling section, whole flow arrange the material section, feed bin and active carbon shale shaker down, and the upper segment module includes heating section and changeover portion, and the lower segment module includes cooling section and whole flow row material section, top feed bin and upper segment module are the left room of analysis tower, the lower segment module is analysis tower right room, analysis tower construction method includes:
installing an active carbon vibrating screen;
taking the cooling section and the integral flow discharge section as a lower section module, and installing a framework of the lower section module;
adopting a crawler crane as a main crane truck crane as an auxiliary crane to hoist the lower section module;
installing a framework of the transition section;
installing a framework of the heating section;
and taking the heating section and the transition section as upper section modules, and taking the crawler crane as a main crane truck crane as an auxiliary crane hoisting upper section module.
2. The analytical tower construction method according to claim 1, further comprising:
installing a crawler crane and a truck crane;
determining the station vehicle positions of the crawler crane and the truck crane and the arm length in the overturning process according to the station vehicle position of the analysis tower transport vehicle;
determining rated lifting capacity of the crawler crane and the truck crane, wherein the single machine load does not exceed 80% of the rated lifting capacity;
and the upper section module or the lower section module is changed from a horizontal posture to a vertical posture by utilizing the reverse change process of the arm length and the amplitude of the crawler crane and the truck crane, and then the turnover is completed.
3. The analytical tower construction method according to claim 2, further comprising:
the framework is installed to the analysis tower at a position high, the crawler crane of the main crane adopts a crawler crane of the main crane, and a lifting appliance is installed on the crawler crane;
determining the station position of the main crane crawler crane according to the in-position of the upper section module or the lower section module to be hoisted;
paving a roadbed box board on a station vehicle traveling route of the main crane crawler crane;
determining the arm length of the main hoisting crawler crane according to the in-place height, the module size, the sling height and the station vehicle position of the upper section module or the lower section module to be hoisted, and determining the rated lifting capacity of the crane according to the amplitude and the arm length and the characteristic curve of the main hoisting crawler crane;
determining the calculated load of the hoisting according to the maximum load of the upper section module or the lower section module and the weight of the lifting appliance, and adjusting the rated load lifting capacity of the crane according to the calculated load so that the rated load lifting capacity of the crane is greater than the calculated load;
determining the station position of the transport vehicle according to the determined station position of the main crane crawler crane;
the upper section module or the lower section module is changed from a horizontal posture to a vertical posture by using a main crane crawler crane and an auxiliary crane truck crane;
and after the upper section module or the lower section module is completely erected, the auxiliary crane truck crane exits from hoisting, and the main crane crawler crane hoists the top end of the completely erected module to hoist the module in place.
4. The analytical tower construction method of claim 1, wherein the upper section module further comprises a transition section that vents sulfur-containing gas to an acid making system; or/and
the lower section module further comprises a nitrogen interface, and the nitrogen interface is connected with the cooling section and the integral flow discharge section and used for inputting nitrogen, so that the effects of flame retardance and heat transfer are achieved.
5. The analytical tower construction method according to claim 1, wherein the analytical tower further comprises a blanking bin, and the blanking bin is an activated carbon outlet.
6. The analytical tower construction method according to claim 1, wherein the analytical tower further comprises a top bin, and the top bin is an activated carbon inlet.
7. The analytical tower construction method according to claim 1, wherein the step of using the crawler crane as a main crane truck crane as an auxiliary crane to hoist the upper segment module further comprises:
installing a limiting and guiding device of the resolving tower;
installing an air inlet and an air outlet of the desorption tower for heating air and cooling air;
installing a round roller of the resolution tower;
the method comprises the following steps of installing an analytic tower top bin, a discharging bin and a bypass device, wherein the top bin and the discharging bin are valve groups formed by a rotary valve and a gate valve, and the bypass device is a discharging chute which is not arranged in a section behind the discharging bin and does not pass through the analytic tower.
8. The analytical tower construction method according to claim 1, further comprising: and carrying out air tightness test on the desorption tower, wherein the air tightness test comprises the following steps:
the method comprises the steps of tube side detection and shell side detection, wherein the tube side detection comprises detection of an analysis tower and an analysis tower top bin, the shell side detection is matched with a hot air pipeline for detection, the air tightness detection of the analysis tower is detected by adopting a continuous pressurization method, the maximum pressure is 10KPa, a diaphragm capsule pressure gauge with the measuring range of 25KPa is detected, the detection is visually performed by using soapy water, the pressure is maintained for 30 minutes after the air tightness detection of the analysis tower is completed, and the detection is qualified without pressure drop.
9. The analytical tower construction method according to claim 1, further comprising:
and (5) installing an insulating layer of the desorption tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111462629.4A CN114453867B (en) | 2021-12-02 | 2021-12-02 | Construction method of analytic tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111462629.4A CN114453867B (en) | 2021-12-02 | 2021-12-02 | Construction method of analytic tower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114453867A CN114453867A (en) | 2022-05-10 |
| CN114453867B true CN114453867B (en) | 2023-03-28 |
Family
ID=81405672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111462629.4A Active CN114453867B (en) | 2021-12-02 | 2021-12-02 | Construction method of analytic tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114453867B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105058052B (en) * | 2015-08-28 | 2017-07-25 | 中国能源建设集团湖南火电建设有限公司 | A kind of 3MW wind power generating sets installation method |
| CN110562850A (en) * | 2019-09-30 | 2019-12-13 | 中铁大桥局集团有限公司 | Main tower integral hoisting system and method |
| CN112777484A (en) * | 2019-11-11 | 2021-05-11 | 南京华瑞德物流装备有限公司 | Hoisting method of goods shelf |
| CN113666280A (en) * | 2021-08-19 | 2021-11-19 | 黄河勘测规划设计研究院有限公司 | Method for manufacturing and hoisting reinforcement cage for impervious wall construction |
-
2021
- 2021-12-02 CN CN202111462629.4A patent/CN114453867B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN114453867A (en) | 2022-05-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2020238984A1 (en) | Vehicle-group-based apparatus for large-height lifting and shifting of bridge, and implementation method therefor | |
| CN104512844B (en) | Transverse sliding and vertical hydraulic jacking lifting method for super-huge type mill housing frame | |
| WO2020233501A1 (en) | Construction method for upright lifting of large-tonnage box girder to bridge, and erection method for large-tonnage box girder | |
| CN101844286B (en) | H type steel column base welding method | |
| CN102235107B (en) | Hydraulic lifting construction method for chimney steel inner cylinder | |
| WO2022088053A1 (en) | Girder transporting vehicle, girder transporting system, steel box girder assembly system, and steel box girder assembly method | |
| CN110847062A (en) | Construction method for whole-hole assembly double-width erection in 80-meter-span wide steel box girder factory | |
| CN212744023U (en) | Assembling trolley for lower assembling section of assembled station pile anchor system | |
| CN107761582A (en) | The sliding hanging method and sliding auxiliary hoisting device of restricted clearance installation steel box-girder | |
| CN109441166A (en) | A kind of stereo parking facility that inclination of vehicle formula is parked and its application method | |
| CN114453867B (en) | Construction method of analytic tower | |
| CN110747307B (en) | Large steam drum hoisting method in converter energy-saving and environment-friendly reconstruction | |
| CN201301581Y (en) | Absorption tower wall construction device employing reversal installation method | |
| CN110127520B (en) | Method for installing small-lattice funnel and dust-settling pipe of large sintering machine | |
| CN113148857A (en) | Movable type quick-dismantling hoisting steel truss | |
| CN209851191U (en) | Single track PC roof beam template of high accuracy | |
| CN110878589A (en) | Electric lifting reverse construction method for absorption tower | |
| CN218090318U (en) | Device for removing temporary track and sleeper of shield tunnel | |
| CN114016420B (en) | Single pier column steel bridge assembly type construction method | |
| CN212504186U (en) | Bioreactor sliding device | |
| CN1603224A (en) | Integrally turning method of tower crane | |
| CN209066247U (en) | A kind of good multi-functional all-hydraulic moving trestle of protective performance | |
| CN113135502A (en) | Method and device for high-rise building construction by adopting hydraulic jacking assembly | |
| KR101213377B1 (en) | A bridge deck lift-launching contruction method and a lift-launching device for the same | |
| CN104631336B (en) | Mobile storage platform for storing steel truss girder pieces and construction method of mobile storage platform |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |