CN104018679B - U-GAS gasification furnace mounting method - Google Patents
U-GAS gasification furnace mounting method Download PDFInfo
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- CN104018679B CN104018679B CN201410259848.6A CN201410259848A CN104018679B CN 104018679 B CN104018679 B CN 104018679B CN 201410259848 A CN201410259848 A CN 201410259848A CN 104018679 B CN104018679 B CN 104018679B
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Abstract
U-GAS gasification furnace mounting method, belong to installation field, it comprises the lifting of gasification furnace body, dipleg system is installed, cyclone separator is installed, it is characterized in that the lifting of described gasification furnace body is first by unsettled for gasification furnace body location, then close up gasification furnace steel structure support seat, finally by gasification furnace and steel structure support seat falls into position simultaneously; Described dipleg system is installed and is comprised that blanking leg is installed, middle dipleg is installed and upper dipleg is installed, and described lower dipleg installation steps comprise: (1), on steel structure support seat, put an interim equalizer bar, and the centre of interim equalizer bar is as lower dipleg first suspension centre; Interim equalizer bar ties up a fixed pulley group with wire rope; With wire rope, movable pulley is bundled in the top of pipe on lower dipleg.Construction period of the present invention is short, and installation cost is low.
Description
Technical field
The invention belongs to construction and installation field, be specifically related to U-GAS gasification furnace mounting method.
Background technology
U-GAS Coal Gasification Technology adopts the technology that the colm (gangue, middle coal, brown coal, sulphur coal etc.) of low cost is waste synthesis gas;
U-GAS gasification furnace is the product of integrated energy system company of the U.S. (SES).Described U-GAS gasification furnace comprises gasification furnace body, the first cyclone separator, the second cyclone separator, dipleg system and waste heat boiler, connecting pipe between gasification furnace body and the first cyclone separator is the first pipeline, connecting pipe between first cyclone separator and the second cyclone separator is second pipe, connecting pipe between second cyclone separator and waste heat boiler is the 3rd pipeline, be connected with dipleg system below second cyclone separator, dipleg system is connected to form successively by upper dipleg, middle dipleg and lower dipleg.
Gasification furnace body, waste heat boiler and dipleg system architecture are complicated, and installation difficulty is large.
Current U-GAS gasification furnace is installed also does not have comparatively ripe construction technology, and the construction period is longer.
Summary of the invention
The invention provides the construction period short and U-GAS gasification furnace mounting method of safety.
U-GAS gasification furnace mounting method, comprise the lifting of gasification furnace body, waste heat boiler lifts, and first, second cyclone separator is installed, and dipleg system is installed, first, second, third Pipe installing.
Described gasification furnace body lifting is first by unsettled for gasification furnace body location, then closes up gasification furnace steel structure support seat, finally by gasification furnace and steel structure support seat falls into position simultaneously.
Described unsettled location is exactly sling by gasification furnace body to hover over the aerial of predetermined absolute altitude, aloft carries out closing up, the levelling steel structure support seat of assembly welding, centering, and last gasification furnace body and steel structure support seat synchronously fall after rise and be located in basis.
Described cyclone separator comprises the first cyclone separator installation, the second cyclone separator is installed;
The installation of cyclone separator and dipleg system, comprises and makes lifting auxiliary frame, shape steel bracket, and lifting auxiliary frame is made up of the upper plate of four pillars and pillar upper end, and upper plate is rectangular slab, and upper plate is provided with two lifting hole(eyelet)s passed for lifting rope, and upper plate is connected with supporting leg.
Described shape steel bracket to be height the be steel structure frame of 60 meters.
Described lifting bracing frame is made up of the good lower plate of upper plate at four (or 6) supporting legs and supporting leg two ends, and upper plate, lower plate are rectangular slab, and upper plate is provided with two lifting hole(eyelet)s passed for lifting rope, and lower plate is provided with equipment preformed hole, and upper plate, lower plate are connected with supporting leg.
The installation steps of described dipleg system are as follows:
1, first upper dipleg is placed on temporarily the floor of installed height mark;
2, lower dipleg is after the assembling of ground, after hanging in lifting auxiliary frame, then by each group of docking port welding levelling capturing;
Each group of docking port, after the assembling of ground, after hanging in lifting auxiliary frame, then is welded levelling capturing by middle dipleg;
3, middle dipleg is installed and is comprised the steps:
(1), on the steel structure base of the first cyclone separator an interim girder steel, interim girder steel requires span 2.7m and the power of 25t is born in centre, as the first suspension centre wherein in the middle of interim girder steel; Interim girder steel ties up a fixed pulley group with wire rope, a lateral edges of fixed pulley outward flange and dipleg preformed hole point-blank;
(2), with wire rope, movable pulley is bundled in the top (movable pulley can start with middle dipleg one) of first VERTICAL TUBE of middle dipleg, under middle dipleg lies low situation, wire rope snap ring link position is near cyclone separator steel structure base limit and snap ring bolt handle must adjust position on steel structure base limit before the lifting of middle dipleg, in order to avoid snap ring withstands on the edge of middle dipleg preformed hole, the equipment that affects normally lifts;
(3), the second suspension centre 1000t crane of middle dipleg hangs, the wire rope of crane therefrom dipleg preformed hole puts in, wire rope binding position is the bottom of second VERTICAL TUBE of middle dipleg, and knotting place of wire rope binding snap ring must in the close flange position of middle dipleg, be pressed in below wire rope with plank interval around wire rope, on the one hand for preventing dipleg in wire rope scuffing, preventing steel wire from skidding on middle dipleg on the other hand, affecting equipment hoisting;
(4), middle dipleg has been sling by 1000t crane, and to be raised to middle dipleg summit from the distance of concrete floor lower end be 200mm, and while 1000t crane hoists, hoist engine is by certain power, does not make middle dipleg produce the slippage of horizontal direction.
(5), immediately assembly pulley to start to hoist the first suspension centre of middle dipleg, the balance of dipleg in simultaneously utilizing 10T jack to control, 1000t crane and hoist engine cooperatively interact and hoist, fall, and make dipleg in material pass through preformed hole.
(6) pipeline support (DN400Thk=10 seamless carbon steel tube) is used in lower dipleg lower end temporarily, pipeline can cut arc process contacting with dipleg with maximum area to pipeline with lower dipleg contact portion, ensures the stability of equipment.On dipleg, binding wire rope with 2 10t jacks is above temporarily fixed in 58m preformed hole by dipleg;
Described cyclone separator installation steps comprise:
(1), by crane eave tile fall, first at eave tile intermediate hanging wire line thimble, wire line thimble hangs two jacks, and crane hooks up to be sling cyclone separator, and with jack by cyclone separator straightening;
(2), the adjustment crane radius of clean-up, sling by cyclone separator and use 300t crane slipping tail, the sling flange port of cyclone separator of 300t crane makes cyclone separator flange port side upwarp, and hangs up jack by cyclone separator straightening;
(3), crane hooks up and winches to cyclone separator apart from off the hook during braced structures 100mm, loose hook.
Construction period of the present invention is short, and installation cost is low.Effective, high-quality a large amount fast.
Accompanying drawing explanation
Fig. 1 is the structure chart of lifting auxiliary frame of the present invention.
Fig. 2 is lifting auxiliary frame of the present invention and the using state figure lifting bracing frame.
Fig. 3 is state diagram when dipleg is in place in the present invention.
In figure, 1, pillar, 2, lifting hole(eyelet), 3, crossbeam, 4, base plate, 5, supporting leg, 6, upper plate, the 7, second suspension centre, the 8, first suspension centre, 9, movable pulley, 10, preformed hole, 11, hung equipment, 12, interim equalizer bar.
Detailed description of the invention
This detailed description of the invention is that Yima coal industry combines energy Methanol Protein project U-GAS gasification installation construction method.
1, preparation:
Gasification furnace central tube need insert gasification furnace bottom, and gasification furnace lifting length reaches 31.814m, weight 180.88 tons, installed height mark 36 meters, and lifting need stride across the steel structure frame that height is 58 meters, lifting radius 28m.
Main hoisting crane selects Xu work XGC15000(1000t) crawler crane SHB super lifting working condition heavy principal arm lifting performance table: 114m principal arm+340t super-starting balance weight, 28m operating radius, surpass balance weight radius 15m, specified elevating capacity is 275t, the requirement of gasification furnace lifting construction can be met, not anti-bar, rate of load condensate 76.8%, safety selected by crane.
QUY300(300 ton selected by slipping tail crane) pedrail crane, QUY300 crawler crane performance table, under heavy principal arm operating mode, when lifting brachium 30.00m, operating radius 10m, rated load weight is 140t, can meet construction requirement, rate of load condensate 82.5%, safety selected by crane.
Need first section grey under gasification furnace to be hung in steel structure frame before gasification furnace lifting, be placed on the floor of absolute altitude 21m temporarily.
8 adapters in the 360 ° of disposed at equal distance in same absolute altitude place below gasification furnace bearing, the outer point of contact of tube walls of 8 adapters formation diameter that links together is the circle of 5.2m, and gasification furnace steel structure support seat maximum inner diameter is 4.08m, gasification furnace body cannot be directly in place.Therefore adopt unsettled for gasification furnace body location, then close up gasification furnace steel structure support seat, the method that last gasification furnace body and steel structure support seat fall simultaneously lifts.
Making length is the equalizer bar 12 of 5 meters, and Fibre-core cable Φ 90-6 × 61+1 selected by main hoisting crane wire rope, 18m, 2.Independent wire strand Φ 66-6 × 37+1 selected by slipping tail crane rope, 36m, 2.
Make 4 lifting auxiliary frames: shown in Fig. 1, described lifting auxiliary frame is made up of the upper plate of four pillars 1 and pillar upper end, and upper plate is rectangular slab, and upper plate is provided with two lifting hole(eyelet)s 2 passed for lifting rope.
Make 4 lifting bracing frames (being respectively used to lower dipleg, middle dipleg, the first cyclone separator, the second cyclone separator), shown in Fig. 2, described lifting bracing frame is by being 6 in 4 or 6 supporting leg 5(figure) and the upper plate 6 at supporting leg two ends and base plate 4 form, upper plate 6 and base plate 4 are rectangular slab, upper plate is provided with two lifting hole(eyelet)s 2 passed for lifting rope, base plate arranges a rectangular equipment preformed hole 10, and lower plate is connected with supporting leg with upper plate.
Equipment (comprising lower dipleg, middle dipleg, the first cyclone separator, the second cyclone separator) will be hung prefabricated in lifting auxiliary frame while making lifting bracing frame;
2, gasification furnace body lifting:
The lifting of gasification furnace body is first by unsettled for gasification furnace body location, then closes up gasification furnace steel structure support seat, finally by gasification furnace and steel structure support seat falls into position simultaneously;
Start main crane and slipping tail crane, level slowly promotes gasification furnace body.
Level promotes the liftoff 200mm of gasification furnace body and observes; After without exception, main crane continues to promote gasification furnace body, and slipping tail crane coordinates main crane, makes gasification furnace body slowly upright.
After gasification furnace body is upright, liftoff 200mm stops, and extracts slipping tail rope, observes.After without exception, main crane continues to promote gasification furnace body and crosses the steel structure frame that height is 58 meters, enter hole for hoist, slowly fall base after rise to absolute altitude 37.3 meters parking, gasification furnace body is suspended in the air, fixed by gasification furnace body with 85 tons of jacks, wherein the top and bottom of gasification furnace body respectively divide left-right and front-back four direction to fix with 45 tons of jacks.
Closed up by steel structure base around gasification furnace body, it is right to organize, simultaneously installation foundation annex.Group to size and levelness required precision within 2mm;
Remove the fixing jack of gasification furnace body upper and lower end, gasification furnace body and steel structure base falls into position simultaneously, fastening foot bolt fundamentally; Gasification furnace body levelling capturing.Fastening foundation bolt.
2, waste heat boiler lifting:
Main hoisting crane selects Xu work XGC15000(1000t) crawler crane SHB super lifting working condition heavy principal arm lifting performance table: 114m principal arm+340t super-starting balance weight, 22m operating radius, surpass balance weight radius 15m, specified elevating capacity is 285t, the requirement of remaining pot lifting construction can be met, not anti-bar, rate of load condensate 93%, safety selected by crane.
Xu work QUY300 crawler crane selected by slipping tail crane, and under heavy principal arm operating mode, when lifting brachium 30.00m, operating radius 10m, rated load weight is 140t, can meet construction requirement, and rate of load condensate 90%, safety selected by crane.
Waste heat boiler lifting is identical with gasification furnace body hoisting.
Weld between gasification furnace body with the first pipeline, the first pipeline welds with between waste heat boiler, and other connections are Flange joint.
3, dipleg system is installed:
Described dipleg system is installed and is comprised the installation of blanking leg, the installation of middle dipleg and the installation of upper dipleg, and described lower dipleg installation steps comprise:
(1), on steel structure support seat, put an interim equalizer bar, the centre of interim equalizer bar is as lower dipleg first suspension centre; Interim equalizer bar ties up a fixed pulley group with wire rope; With wire rope, movable pulley is bundled in the top of pipe on lower dipleg;
(2), with wire rope bundled by pipe under the second suspension centre and lower dipleg, namely steel wire penetrating lifts auxiliary frame preformed hole and bundlees with pipe under lower dipleg;
(3), lower dipleg slings and makes lower dipleg become vertical state from level by crane, and rises and be raised to installation site; Namely fixed pulley group starts to hoist the other end of lower dipleg, fixed pulley group is drawn main hoisting crane and hoist engine to cooperatively interact in the opposite direction at the process 10T jack that hoists to hoist, is fallen, the equipment upper and lower part of making all can pass through reserving hole, make in hoisting process on rear side of equipment higher than front side, then front side hoist engine and the off the hook simultaneously of rear side main hoisting crane, device synchronization is declined, docks with gasification furnace body after lower dipleg adjustment angle, tight a bolt.
(4) manage interim pipeline support by under lower dipleg, and cut arc process contacting with lower dipleg with maximum area to the pipeline of pipe contact portion under lower dipleg, on lower dipleg, pipe is temporarily fixed in preformed hole;
Described middle dipleg installation steps comprise:
(1) making of auxiliary frame is lifted;
Described lifting auxiliary frame is made up of the upper plate of four pillars and pillar upper end, and upper plate is rectangular slab, and upper plate is provided with two lifting hole(eyelet)s passed for lifting rope, and upper plate is connected with pillar;
Described lifting bracing frame is made up of the upper plate at four (or 6) supporting legs and supporting leg two ends and base plate, the good base plate of upper plate is rectangular slab, upper plate is provided with two lifting hole(eyelet)s passed for lifting rope, and base plate arranges a rectangle equipment preformed hole, and base plate is connected with supporting leg with upper plate;
(2), on the steel structure base of the first cyclone separator an interim equalizer bar, the centre of interim equalizer bar is as the first suspension centre; Interim equalizer bar ties up a fixed pulley group with wire rope;
With wire rope, movable pulley is bundled in the top of first VERTICAL TUBE of middle dipleg;
(3), with wire rope the second suspension centre and middle dipleg second VERTICAL TUBE are bundled, namely steel wire penetrating lifts auxiliary frame preformed hole and bundlees with middle dipleg second VERTICAL TUBE, is lined with plank between wire rope and middle dipleg second VERTICAL TUBE;
(4), middle dipleg has been sling and has been raised to middle dipleg summit from the distance of concrete floor lower end by crane is 200mm;
(5), fixed pulley group hoists the first suspension centre of middle dipleg, in utilizing jack to control simultaneously dipleg balance and middle dipleg is turned into vertical state by level, make middle dipleg pass through preformed hole;
(6), by middle dipleg and the docking of lower dipleg, adjustment angle, tights a bolt;
4, cyclone separator installation steps comprise (installation steps of the first cyclone separator, the second cyclone separator are identical with following step):
(1), by crane eave tile fall, first at eave tile intermediate hanging wire line thimble, wire line thimble hangs two jacks, and crane hooks up to be sling cyclone separator, and with jack by cyclone separator straightening;
(2), the adjustment crane radius of clean-up, sling by cyclone separator and use 300t crane slipping tail, the sling flange port of cyclone separator of 300t crane makes cyclone separator flange port side upwarp, and hangs up jack by cyclone separator straightening;
(3), crane hooks up off the hook when cyclone separator being winched to distance support structure of cyclone separator 100mm, loose hook, and cyclone separator is in place.
After first cyclone separator is in place, middle dipleg docks with the first cyclone separator, and (6) first cyclone separators are levelling; Tighten middle dipleg and the first cyclone separator to connecting bolt.
Make the first pipeline in place with 1000t crane lifting first pipeline, gasification furnace body is connected with the first pipeline and the first cyclone separator.
Make second pipe in place with 1000t crane lifting second pipe, to dock with the first cyclone separator.
Dock with upper dipleg, second pipe after second cyclone separator is in place, and fastening all connecting bolts.
3rd lifting pipeline:
(1) before lifting first by reserved threeway transverse tube above the end socket in the threeway on the second cyclone separator top and inner plug, connected short tube, waste heat boiler all with the 3rd Tube formation after, by place for the 3rd lifting pipeline assembled and be connected with the second cyclone separator bolt.
5, the installation of waste heat boiler:
In place and dock with the 3rd pipeline (slipping tail crane adopts Xu work QUY300 crawler crane) with 1000t crane lifting waste heat boiler.
6, need the carrying out of welding to weld to all, after welding job, original reserved place of building Fire and abrasion resistant material is built.After maintenance is qualified, close all plugs and end socket.
, other supporting supporting facility installation:
dreg removing system flow of installation and key points for operation
1, grey section under slag gasification furnace, have two to expand slag pipe, corresponding a set of dreg removing system, is respectively deslagging 1 line and deslagging 2 line respectively.Two cover dreg removing systems all adopt dry cinder discharging.
2, the installation slope requirement of its lining earthenware duct is not less than 75 °, requires reasonably arranging pipeline in limited space.
3, buffering bucket with pressure, lock hopper, normal pressure buffering bucket, slag lock strainer all need first by equipment from winching to installed height mark, equipment jack is hung, then starts to make steel structure base.
coal adding system, ignition system, remaining pot soot blower system
Coal adding system
1) coal bunker field fabrication is installed
2) assembling drawing of the installation producer of Clyde's coal adding system and designing institute's drawing are installed at the scene.
Installation procedure:
------------electrically, instrument installs---load-bearing module---system debug to craft piping to dome valve (2) to rotary feeder (2) to sending cans (2)
System debug
(1) dome valve, rotary feeder should rotate flexibly, without bite, leakage phenomenon.All pneumatic operated valve switches are sensitive, and nothing is without bite, leakage phenomenon.
(2) weighing apparatus load-bearing is wanted accurately.
(3) during load test run, require that 2 sending cans can be chain, make coal can add gasification furnace by coal continuously.
Remaining pot soot blower system is installed
1) according to the flow chart that producer gives, unit in charge of construction is selection material voluntarily, design technology arrangement diagram.
2) installation procedure:
Acoustic wave ash ejector---gas source pipe---electric meter installation---system debug;
Ignition system and other equipment mounting process flow process and key points for operation
1) ignition system is without design drawing, the principle provided according to SES and mechanical drawing, unit in charge of construction designed, designed technology arrangement figure.
2) gasification furnace has 5 burning torches, is arranged in 7th floors (3 uniform), 9th floors (2 being arranged symmetrically with).Burning torch inserts gasification furnace, and gasification furnace light a fire successfully, needs to extract out, and the pipeline of tie point firelock is the long metal hose of 2m, require with the process pipe position of connection by metal hose rationally, do not hinder the taking out of burning torch, slotting.
process pipe is installed
1, U-GAS gasification furnace within battery limit medium is various, and pipe arrangement is comparatively complicated, need construct, cross-operation in construction at multiple floor simultaneously.Pipe material comprises heat-resisting alloy steel, stainless steel, carbon steel, Nickel-Based Steel, and wherein oxygen channel need carry out degreasing, and alloy steel pipeline needs to heat-treat.In addition, perfect not enough in pipe arrangement design, need to modify according to the experience of gasification installation construction in the past in construction.
2 method for welding pipeline
1) all material pipelines of DN50mm are less than or equal to for nominal diameter and Monel400 material all adopts argon arc welding.
2) pipeline nominal diameter be greater than DN50mm's and medium be sewage, low-pressure nitrogen, steam condensate carbon steel piping adopt manual electric arc welding.All the other all adopt argon Electricity Federation to weld.
3) all pipelines are all adopted to the welding procedure of single face welding and double face shaping.
4) selection company has the welding procedure qualification report that can cover product.When can not cover, re-start qualification of welding procedure by GB50236 relevant regulations.
5) draw single line drawing, analyze welding procedure node, determine the welding procedure qualification report that each welding node uses, and the welding procedure sheet numbering of corresponding establishment.
6) welding point mother metal coupling welding material.
Key points for operation before 3 welding
1) setting of weld seam should avoid area of stress concentration, is convenient to welding and heat treatment;
2) rotate weld bond by prefabricated the employing as much as possible of pipe factoryization, reduce fixing weld bond, fixing weld bond should as much as possible away from equipment interface;
3) should pad firmly during group pair, and should take measures to prevent from producing subsidiary stress and distortion in welding and heat treatment process.It is right to forbid organizing by force;
4), when welding tack weld, the wlding of employing should be identical with root pass with welding procedure.Tack weld size (length, thickness, spacing or solder joint number) should be able to ensure weld seam unlikely cracking in formal welding process;
5) before welding root pass, reply tacking position checks, can welding after should processing when finding that there is defect.
The weld preheating of alloy steel and postweld head treatment
1) need the weld seam of preheating, its interlayer temperature should in preheat temperature range.
2) when weld preheating and postweld head treatment, should measure and record its temperature, the position of point for measuring temperature and quantity should be reasonable, and temperature instrumentation should be qualified through measurement verification;
3) during weld seam heat treatment from when 400 DEG C record, when temperature is more than 400 DEG C, the speed of intensification must not more than 5000/ pipe thickness DEG C/h, and must not more than 200 DEG C/h, minimumly can be 50 DEG C/h, and the temperature difference must not be greater than 120 DEG C.
4) when weld seam is heat-treated to the temperature of constant temperature, constant temperature time is pipe thickness/25h, but the shortest time is not less than 1/4h, and each point for measuring temperature temperature difference should not be greater than 65 DEG C.
5) start cooling after constant temperature, cooling rate must not more than 6500/ pipe thickness DEG C/h, and must not more than 260 DEG C/h, minimumly can be 50 DEG C/h.
6) after heat treatment, Determination of Hardness is tube outer diameter when being greater than 57 ㎜, checks 10% of heat treatment totalnumber of welding; When tube outer diameter is less than 57 ㎜, checks 5% of heat treatment totalnumber of welding, and be no less than a weld bond.
7) Determination of Hardness of each weld bond be no less than a place often place be 3 points.
8) hardness of weld seam is no more than mother metal hardness+100 for qualified, when hardness number exceedes regulation, doubles to check, still defective another warm process, and does hardness determination.
The pickling of stainless steel pipes, Passivation Treatment
1) stainless steel weld joint is after quality examination is qualified, should carry out weld seam and pickling, Passivation Treatment are carried out in neighbouring surface.
2) pickling on its postwelding surface of pipeline, Passivation Treatment should be carried out after strength test.
3) suitable formula and operating procedure should be formulated according to relevant specification before pickling, passivation.
4) pickling of weld bond, Passivation Treatment acid wash passivation ingredients brushing method are carried out, and gasoline, alkali lye or detergent must be used except degreasing, and rinse well with water, do not allow to scrub pipe surface with carbon steel wire before pickling.
5) stainless steel surfaces after pickling does not have the speckle of obvious corrosive liquid mark and uneven color, and must not there be oxidation tint on weld seam and hot-working surface.Rinse well with water after pickling, must not have residual acid washing lotion, the stainless steel surfaces application water after passivation rinses, in drying water mark after neutrality.
Oxygen channel degreasing
1) on oxygen channel all parts before prefabricated all should degreasing qualified, check without grease fluorescence to be qualified with black turning off the light, with 1.6MP saturated vapour purging after oxygen channel construction.
2) purge practice shooting qualified after, pipe end will put into the broken end of camphor ball in steam condensate, do not stop to rotate to be degreasing qualified with the broken end of camphor ball.
The quality requirement of weld seam and inspection
1) visual inspection:
(1) face of weld has not allowed crackle, pore, slag inclusion, fusion character splash;
(2) surface is strengthened high: I, II grade of weld seam is≤1+0.1b, and is not more than 3mm; III, IV grade of weld seam is≤1+0.2b, and is not more than 5mm, and wherein b is weld width;
(3) surface indentation: I, II grade of weld seam does not allow; III, IV grade of weld penetration≤0.5mm, length is less than or equal to 10% of weld seam total length, and is less than 100mm;
(4) joint bevel dislocation: I, II grade of weld seam is less than 0.15 times of wall thickness, is 3mm to the maximum; III, IV grade of weld seam is less than 0.25 times of wall thickness, is 5mm to the maximum;
(5) weld width: exceed bevelled edge 2mm and be advisable;
2) nondestructive testing and reprocessing
(1) the radiographic examination (complete) quantity of pipe welding seam should be as the criterion with design document regulation.
(2) through underproof weld seam same position number of rewelding non-alloyed steel conduit of detecting a flaw no more than three times, other pipeline should not be reprocessed and exceed secondary, otherwise should through welding responsible engineer, chief engineer's approval, separately establishment welding Rework Technics, and reprocess weld seam Performance and quality should be identical with former weld seam;
(3) through the underproof weld seam of selective examination flaw detection, the same a collection of weld seam that this welder of twice welds should be checked again, as this welder of defective reply the same a collection of weld seam that welds all test.
Technique and pipe arrangement improve
1) 1.6MPa low-pressure steam house steward conflicts with residue extraction mechanism, its thing pipeline need be moved on to B axle northing and be about 60mm from B axle.
2) Clyde's coal adding system coal chute line PGSF-13101, PGSF-13104, PGSF-13107, PGSF-13201, PGSF-13204, PGSF-13207, PGSF-13301, PGSF-13304, PGSF-13307 ceramic elbow cannot be connected with pipeline (ceramic elbow wall thickness is blocked up) with flange, ceramic elbow, change all ceramic elbows and common pipe junction into Flange joint, ceramic elbow and flange connections are to after being with neck W.N flange to carry out cutting and Flange joint.
3) in the middle of the every cover system of Clyde's coal adding system, the blow-down pipe of two equipment and 42m concrete beam are interfered, this part blow-down pipe is caused to install, blow-down pipe assembly should be cut open from 150 × 200 concentric reducers, pipeline below concentric reducer is extended, make this part concentric reducer upper flange higher than 42m plane, concordant with other 4.
4) remaining pot outlet conduit sampler opening is immediately below pipeline, and remaining pot outlet is raw gas, and dustiness is large, easily causes sampler to block, opens directly over pipeline by sampler opening, effectively can solve time problem.
5) therefrom press nitrogen pipeline to connect a pipeline to low pressure nitrogen pipeline at 26m, use during driving.
6) Clyde's adding system increases at the end in exit the pipeline that leads to ground, uses during modulating system, can not to gasification furnace coal.
7) gasification adopt fast air-operated valve due to cylinder excessive, cannot install and the way of rotary cylinder angle or rotary valve can be adopted to solve.
8) the former design of pipeline of breathing out of Clyde's coal adding system is connected on coal bunker, and according to its operating principle, it is more reasonable to be changed on sack cleaner, and air intake increases a DN400 pipeline and receives 56m and cushion above coal bunker under sack cleaner.
9) oxygen preheat device utilizes the 0.3MPa steam official website outside battery limit (BL) to provide thermal source in the design, in order to ensure that battery limit (BL) need be that 0.5MPa steam access battery limit (BL) is as standby heat source by oxygen preheat device energy steady operation.
Claims (1)
1.U-GAS gasification furnace mounting method, comprise the lifting of gasification furnace body, dipleg system is installed, cyclone separator is installed, it is characterized in that the lifting of described gasification furnace body is first by unsettled for gasification furnace body location, close up gasification furnace steel structure support seat again, finally by gasification furnace body and steel structure support seat falls into position simultaneously; Described dipleg system is installed and is comprised the installation of blanking leg, the installation of middle dipleg and the installation of upper dipleg, and described lower dipleg installation steps comprise:
(1), by lifting auxiliary frame and lifting bracing frame be stacked together, lifting auxiliary frame puts an interim equalizer bar, and the centre of interim equalizer bar is as lower dipleg first suspension centre; Interim equalizer bar ties up a fixed pulley group with wire rope; Steel wire penetrating lifts bracing frame and with wire rope, movable pulley is bundled in the top of pipe on lower dipleg;
(2), with another wire rope bundled by pipe under the second suspension centre and lower dipleg, namely another steel wire penetrating lifts auxiliary frame lifting hole(eyelet) and bundlees with pipe under lower dipleg;
(3), lower dipleg has been sling and has been raised to installation site by crane;
(4) manage interim pipeline support by under lower dipleg, and cut arc process contacting with lower dipleg with maximum area to the pipeline of pipe contact portion under lower dipleg, on lower dipleg, pipe is temporarily fixed in the preformed hole of lifting bracing frame;
Described lifting auxiliary frame is made up of the upper plate of four pillars and pillar upper end, and upper plate is rectangular slab, and upper plate is provided with two lifting hole(eyelet)s passed for lifting rope, and upper plate is connected with pillar;
Described middle dipleg installation steps comprise:
(1), on lifting auxiliary frame put an interim equalizer bar, the centre of interim equalizer bar is as the first suspension centre; Interim equalizer bar ties up a fixed pulley group with wire rope;
With wire rope, movable pulley is bundled in the top of first VERTICAL TUBE of middle dipleg;
(2), with wire rope the second suspension centre and middle dipleg second VERTICAL TUBE are bundled, namely steel wire penetrating lifts the lifting hole(eyelet) of auxiliary frame and bundlees with middle dipleg second VERTICAL TUBE, is lined with plank between wire rope and middle dipleg second VERTICAL TUBE;
(3), middle dipleg has been sling and has been raised to middle dipleg summit from the distance of concrete floor lower end by crane is 200mm;
(4), fixed pulley group hoists the first suspension centre of middle dipleg, and the balance of dipleg in simultaneously utilizing jack to control, makes middle dipleg pass through the preformed hole of lifting bracing frame;
(5), by middle dipleg and the docking of lower dipleg, adjustment angle, tights a bolt;
Described cyclone separator installation steps comprise:
(1), by crane eave tile fall, first at eave tile intermediate hanging wire line thimble, wire line thimble hangs two jacks, and crane hooks up to be sling cyclone separator, and with jack by cyclone separator straightening;
(2), the adjustment crane radius of clean-up, sling by cyclone separator and use 300t crane slipping tail, the sling flange port of cyclone separator of 300t crane makes cyclone separator flange port side upwarp, and hangs up jack by cyclone separator straightening;
(3), crane hooks up and winches to cyclone separator apart from off the hook during braced structures 100mm, loose hook.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD288841A5 (en) * | 1989-10-30 | 1991-04-11 | Veb Narva "Rosa Luxemburg",De | GAS-HEATED EMITTER OVEN FOR HEATING ENDLESS MATERIALS |
| CN1563790A (en) * | 2004-04-06 | 2005-01-12 | 东南大学 | Multi-nozzle spraying fluidized bed gasifier |
| DE202006006923U1 (en) * | 2006-04-29 | 2006-08-24 | Gebr. Bruns Gmbh | Boiler which is fired with wood pellets has vertical pipes for hot gases mounted above furnace, U-shaped sheet metal deflector being mounted over burner (with its concave side facing downwards |
| CN102676227A (en) * | 2012-04-17 | 2012-09-19 | 中化二建集团有限公司 | Method for installing Lurgi gasifier |
| ES2400594A2 (en) * | 2009-05-18 | 2013-04-10 | Inerco, Ingenieria , Tecnologia Y Consultoria, S.A. | Boiler provided with an integrated system for catalytic abatement of nitrogen oxides |
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2014
- 2014-06-12 CN CN201410259848.6A patent/CN104018679B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD288841A5 (en) * | 1989-10-30 | 1991-04-11 | Veb Narva "Rosa Luxemburg",De | GAS-HEATED EMITTER OVEN FOR HEATING ENDLESS MATERIALS |
| CN1563790A (en) * | 2004-04-06 | 2005-01-12 | 东南大学 | Multi-nozzle spraying fluidized bed gasifier |
| DE202006006923U1 (en) * | 2006-04-29 | 2006-08-24 | Gebr. Bruns Gmbh | Boiler which is fired with wood pellets has vertical pipes for hot gases mounted above furnace, U-shaped sheet metal deflector being mounted over burner (with its concave side facing downwards |
| ES2400594A2 (en) * | 2009-05-18 | 2013-04-10 | Inerco, Ingenieria , Tecnologia Y Consultoria, S.A. | Boiler provided with an integrated system for catalytic abatement of nitrogen oxides |
| CN102676227A (en) * | 2012-04-17 | 2012-09-19 | 中化二建集团有限公司 | Method for installing Lurgi gasifier |
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