CN1358573A

CN1358573A - Conic nozzle

Info

Publication number: CN1358573A
Application number: CN 00134069
Authority: CN
Inventors: 陈鸣楼
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-12-11
Filing date: 2000-12-11
Publication date: 2002-07-17

Abstract

The present invention can be used in spray washing device of wet (or sem-dry) desulfurization dust-removing equipment in environmental protection industry and tower equipment in chemical industry. Said invented splash-cone nozzle is formed from splash-cone, spray cup, fixing nut, nozzle seat and locating shaft. The spray liquor is sprayed out from throat openong of spray cup at flare angle of 90-120 deg. and the location utilizes the screw rotation of shaft and spray cup seat to regulate the gap width of splash-cone so as to change spray speed, pressure and water-curtain area to obtain spray curtain optimum effect. Said invenled splash-cone nozzle possesses reliable abrasion resistance.

Description

Conic nozzle

Awl (a) nozzle application of spattering of the present invention also is applied to spray and washing in the dried tower of chemical industry in environmental protection industry (epi) wet method (or semidry method) desulfurization and dedusting spray washing.

SO in coal-burning boiler or the kiln gas ₂With removing of dust mainly is to carry out in the main equipment of wet type or half dry type desulfurizing dust-collector.Typical Wet-type desulfurize and dust removing equipment mainly by Venturi tube (literary composition pipe), spray equipment, catch drip a separator (drop catcher), the system that supplies water etc. forms.Its basic functional principle is: contain SO in the flue gas ₂At a high speed enter literary composition pipe with air-flow from the boiler export flue with dust,, contain SO in its flue gas by being located at the injection water proscenia of literary composition pipe aditus laryngis front portion (contraction section) ₂, dust and harmful substance and liquid squeeze mutually and mix, and mixture enters literary composition pipe throat and highly pushes and speed stream then; Produce the gas-liquid mixed flue gas stream of turbulent flow formation under the effect of air-introduced machine draft at the back diffuser, tangentially entering drop catcher according to inertia further acts on, thereby reach the purpose of desulfurization and dedusting, flue gas after being purified is delivered to chimney by air-introduced machine and is discharged, and the dust-laden of discharge and sediment sewage enter the lime-ash sedimentation basin by sewer.

Be pumped to reaction tank and the lime slurry that enters in the reaction tank through the circulated sprinkling liquid of sedimentation basin post precipitation and carry out regenerated hydrogen calcium oxide hybrid reaction, to contain alkali lye by lye pump and send back to again in wet type (half dry type) desulfurating dust-removing equipment, spray once more by spray equipment.

Dust removal process need replenish in service being evaporated and the water of solid particle absorption loss water, and its spray circulation all is the precipitation regenerated liquid with liquid.Though still contain grit through the multi stage precipitation filtration, grit is more serious to the wearing and tearing of spray equipment in this circulation fluid, because wearing and tearing institute puts, the service life person of general spray equipment is shorter.

The objective of the invention is to improve the wear-resisting and wear-resisting corrosive nature of spattering nozzle, improve the spraying barrier optimum efficiency simultaneously and increase the service life, the mutual fit dimension of abundant assurance nozzle is stablized constant, and splash liquid rationally and is effectively sprayed, and also makes things convenient for installation in addition, safeguards, changes.

Fig. 1 outline drawing of the present invention.

Fig. 2 structure chart of the present invention (nut (d) is connected and fixed).

Fig. 3 is second kind of structure chart of the present invention (thread connection indirectly).

Fig. 4 is the third structure chart of the present invention (a directly thread connection).

Fig. 5 is the structural shape of the spray bowl (c) among Fig. 2.

Fig. 6 is the another kind of pattern of the spray bowl (c) among Fig. 3.

Fig. 7 is the another kind of pattern of the spray bowl (c) among Fig. 4.

Fig. 8 is the structural shape that spatters awl (a) among Fig. 2,3,4.

Fig. 9 is for spattering another structural shape of awl (a).

The present invention's (spattering cone (a) formula nozzle) is mainly by spattering cone (a), spray bowl (c), fixing Nut (d), nozzle block, centre of location axle are stepped on part and are formed, and jetting fluid enters spray via nozzle Bowl (c), through short distance step-down speed-raising process, by spray bowl (c)～aditus laryngis with "～+-" ejection of the angle of flare of, by the threaded engagement of locating shaft (b) with spray bowl (c) seat Rotate, cone (a) and spray bowl (c) gap width are spattered in its adjustment, the jet velocity of change jet, Thereby expulsion pressure, water curtain area obtain desirable spray curtain effect.

Spray bowl (c) seat is provided with locating shaft (b) hole and the fixing screw of adjusting, and spray bowl (c) and bowl seat connect by hold-down nut (d), and encapsulant adopts asbestos and soft vulcanized fiber therebetween, and the connection of spattering awl (a) and locating shaft (b) is realized by bolt (screw).

The version of Fig. 2 of the present invention: spray bowl (c) bottom and adopt the protrusion frustum cone structure, its connection with spray bowl (c) seat is passed through hold-down nut (d) and is fixed.

The version of Fig. 3 of the present invention: spray bowl (c) bottom employing external thread structure, special high nut (d) (or gas thread) realization is passed through in its connection with spray bowl (c) seat.

The version of Fig. 4 of the present invention: a female thread structure is adopted in spray bowl (c) bottom, and external screw thread of itself and spray bowl (c) seat adds that encapsulant is directly closing realization.

Critical piece of the present invention spatters awl (a) and spray bowl (c) is to adopt 99 potteries (high corundum) or carborundum and carbide alloy to make, and its working face roughness Ra value can reach 6.32 μ m.

The present invention has compared following remarkable result with background technology:

(1), nozzle is rational in infrastructure, be difficult for stopping up, less scaling, be difficult for dust stratification;

(2), spray water curtain and stablize desulfurization dust-removing efficiency height, stable equipment operation;

(3), the nozzle resistance to water-flow is little, main current frictional force reduces;

(4), compare the cost of manufacture reduction with stainless steel;

(5), wear resistant corrosion resistant is good, prolong service life;

(6), assembling guarantees easily precision, is convenient to adjustment, installation and maintenance, replacing.

Claims

1, the present invention is applied to wet method (or semidry method) desulfurization and dedusting of environmental protection industry (epi) and the spray in the chemical industry tower.Technical characterictic of the present invention is to spatter awl (a) to be fixed on the centre of location axle, spray bowl (c) is fixed on the nozzle block, by adjusting the thread connection of centre of location axle and nozzle block, spatter the gap that coincide mutually of awl (a) and spray bowl (c) as requested along with change, thereby determine speed, flow, pressure, water curtain subtended angle and the diffusion area of injection stream, thereby obtain desirable injection water curtain effect, be provided with gas thread at the nozzle block afterbody simultaneously, be convenient to adjust, install, safeguard.

2, according to the described content of claim 1, the identical angle of spattering awl (a) and spray bowl (c) is 90～120 °, and its material is 99 potteries (high corundum) or carborundum and carbide alloy.

3, according to the described content of claim 1, the connected mode of spray bowl (c) and nozzle block has hold-down nut (d) to be connected (Fig. 2); Spray bowl (c) is pressed close to spray bowl (c) base (e) (external screw thread), spray bowl (c) base (e) external screw thread, and both realize connecting (Fig. 3) by nut (d) or gas thread; Spray the inboard internal thread of bowl (c) base (e) afterbody, spatter awl (a) central shaft external screw thread, spatter awl (a) central shaft and directly be screwed into spray bowl (c) base (e) realization connection (Fig. 4).

4, according to mentioning in the claim 1, the version of spattering bowl has base (e) garden platform convex removing from mould (Fig. 5); Bottom internal thread (Fig. 6); Three kinds of structures of bottom external screw thread (Fig. 7) form.

5, according to mentioning in the claim 1, spattering awl (a) and the centre of location axle connected mode tight fixed bolt that passes through in Fig. 2,3,4 is screwed into locating shaft (b) method is connected, also can have external screw thread is made in the dead axle end, spatter awl (a) connecting hole and make internal thread, both connect closing.

6, according to mentioning in the claim 5, the version of spattering awl (a) can also be divided into two kinds and clear opening or two kinds of screwed holes (Fig. 8, Fig. 9).

7, according to the bedding and padding of mentioning in the claim 1 between awl (a) and locating shaft (b) and fastening bolt of spattering, and between spray bowl (c) seat and spray bowl (c), hold-down nut (d) and asbestos or the mild steel paper washer of sealing or bedding and padding employing thickness 1.5-2.5mm.