CN2708992Y

CN2708992Y - Economic environmental protection type fluidized kiln air distribution board

Info

Publication number: CN2708992Y
Application number: CN 200420060294
Authority: CN
Inventors: 周开敏; 王洪江; 汤勇; 沈立俊
Original assignee: Yunnan Chihong Zinc and Germanium Co Ltd
Current assignee: Yunnan Chihong Zinc and Germanium Co Ltd
Priority date: 2004-07-15
Filing date: 2004-07-15
Publication date: 2005-07-13
Anticipated expiration: 2014-07-15

Abstract

The utility model relates to an economic environmental protection type fluidized kiln air distribution board. The design value of the air distribution board (1) is designed as follows: the eyelet ratio of the air distribution board is 1-1. 2 percent for the front chamber and 0. 8-0. 9 percent for the main bed, the diameter phi of the hood hole (5) on a hood (2) is 5. 8-6. 2mm, and the number of the openings (6) on a flowering board (3) is 1780-1800. The arranging mode of the openings is that the front chamber and the main bed adopt the trapezoid arrangement with parallel edge, and that the 4-9 lines in the middle part are evenly distributed. The arranging mode of the openings adopted by the main bed is that an equilateral triangle is in the middle, with two concentric circles in the periphery and one central concentric circle. The processing parameter of the utility model is easy to control with good baking stability, completely meeting the requirement of sulphating roasting, greatly reducing the raking out frequency and effectively preventing the excessive discharge of spraying materials, chocking ash and sulfur dioxide.

Description

A kind of economic environment-friendly type fluidized bed furnace dispersion plate

Technical field

The utility model belongs to fluidized bed furnace dispersion plate technical field of structures.

Background technology

Fluidized bed furnace is the equipment of present most widely used sulfating roasting zinc concentrate, it has simple in structure, control easily, temperature is even in the layer, quality is relatively stable, be easy to series of advantages such as automation, but because the perforate arrangement that influenced with card by the blast cap density of its dispersion plate influences, cause wind supply quantity deficiency in the stove, and the single increase blow rate required can cause again the time of staying of zinc concentrate in stove not enough, produce bad desulfurization effects, the high consequence of roasting dirt sulfur content, the roasting dust quantity is increased, strengthen the load of dust collecting system, the improper of blast cap density and card pattern can make that also operating parameter is wayward, cause siege to lump easily, it is short to form the blow-on cycle, and the low situation of bed ability also can cause dead stove because of siege scabs when serious.

Summary of the invention

The purpose of this utility model is just in order to overcome fluidized bed furnace dispersion plate in the above-mentioned prior art, the blast cap hole is Φ 5.5mm, the card number of aperture provides a kind of technological parameter that can make to control easily for the weak point of 1350 constructional aspect existence, the roasting good stability, can fully satisfy the requirement of sulfating roasting, reduce the number of times of taking off stove greatly, effectively prevent material spray, the problem that ash is choked and sulfur dioxide (SO2) emissions exceed standard, obviously save production cost, form the air-distribution plate structure of not only economy but also environmental protection.

The purpose of this utility model is achieved by the following technical solution.

1., the eyelet rate of dispersion plate is: cup 1-1.2%, a main bed 0.8-0.9% a kind of economic environment-friendly type fluidized bed furnace dispersion plate is that the design of Structural Parameters with dispersion plate is:; 2., the blast cap bore dia Φ on the blast cap is 5.8-6.2mm; 3., the perforate number on the card is 1780-1800; 4., the arrangement mode of perforate is, cup to main bed adopts the trapezoidal arrangement of parallel edges, the 4-9 row of mid portion evenly distributes for five equilibrium; Main bed adopts the perforate arrangement mode of equilateral triangle+periphery two circles for concentric circles+centres circle.

The preferred eyelet rate cup of dispersion plate is 1.0-1.2%, and main bed is 0.8-0.9%, and the preferred diameter of phi in blast cap hole is 6mm; The preferred number of the perforate on card is 1780--1800.

The utility model is by the structure redesign to the fluidized bed furnace dispersion plate, overcome original technology Apoplexy cap intake deficiency, the card perforate is seriously not enough, the higher defective of hole speed, in actual motion, reach the requirement of sulfating roasting fully, and the parameter stable operation, control easily, pressure is also very stable.Throwing amount in the stove is increased, and the roasted ore sulfur-bearing reduces, and has reduced the corrosion of flow process, make environment not contaminated, and owing to significantly reduced the annual heat number of taking off, production cost reduces greatly, realized more than 540 day historical highest level of the same trade of a continuous blow-on.From economically, all obviously created higher value in the environmental protection.

Further set forth content of the present utility model below in conjunction with Figure of description.

Description of drawings

Fig. 1 is the utility model dispersion plate structural representation;

Fig. 2 is card perforate and arrangement schematic diagram.

The specific embodiment

Embodiment one: dispersion plate 1 is arranged on the hypomere of fluidized bed furnace, and it is made of blast cap 2, card 3 and fire clay liner 4.The eyelet rate cup of dispersion plate is 1.08%, main bed 0.85%, and the diameter of phi in blast cap hole 5 is got 6mm, and material is selected the side-hole-type bacterium shape blast cap of rich chromium cast iron for use, and the wind hole count is that 5 holes are uniform on the blast cap circumference; Perforate 6 numbers on card 3 are 1791, and the card material is a carbon steel, and thickness of slab is 30mm, and the cloth hole arrangement mode of perforate on card is the trapezoidal arrangement that cup to main bed adopts parallel edges, and wherein 4～9 of mid portion rows distribute for equation; Adopting equilateral triangle+peripheral two circles at main bed is the arrangement mode of concentric circles+centres circle, and it is concentric that concentric circles described here is that center line line and the monoblock of peripheral two rows of openings 6 is positioned at the main center of circle of card covering of the fan.

Embodiment two: the eyelet rate cup of dispersion plate gets 1%, main bed 0.8%, blast cap hole 5 diameter of phi are got 6.2mm, number of aperture is that 5 holes are uniform on the blast cap circumference, perforate 6 numbers on card are got 1780, and its cloth hole arrangement mode is that cup to main bed adopts the trapezoidal arrangement of parallel edges, wherein, 4～9 rows of mid portion evenly distribute for waiting, and are the pattern of concentric circles+centres circle with equilateral triangle+peripheral two circles at main bed.The mode that perforate 6 numbers reduce than preferred plan hole count can be taked to reduce by any-mode between cup and main bed.

Embodiment three: the eyelet rate cup of air-distribution gets 1.2%, main bed gets 0.9%, blast cap hole 5 diameter of phi are got 5.8mm, the hole count of perforate 6 is got 1800, its cloth hole arrangement mode is that cup to main bed adopts the trapezoidal arrangement of parallel edges, wherein, 4～9 rows of mid portion evenly distribute for waiting, and are the pattern of concentric circles+centres circle with equilateral triangle+peripheral two circles at main bed.The mode that perforate 6 numbers increase than preferred plan hole count can take vacancy or the vacancy between the perforate 6 between main peripheral circle of bed and equilateral triangle to increase.

Claims

1, a kind of economic environment-friendly type fluidized bed furnace dispersion plate is to be used for the roasting mineral and the air-distribution device that is arranged on the fluidized bed furnace hypomere, is made up of blast cap (2), card (3) and liner (4), it is characterized in that, with the design of Structural Parameters of dispersion plate (1) is:

1., the eyelet rate of dispersion plate is: cup 1-1.2%, main bed 0.8-0.9%;

2., blast cap hole (5) diameter of phi on the blast cap (2) is 5.8-6.2mm

3., perforate (6) number on the card (3) is 1780-1800;

4., the arrangement mode of perforate (6) is, cup to main bed adopts the trapezoidal arrangement of parallel edges, the 4-9 row of mid portion evenly distributes for five equilibrium; Main bed adopts the perforate arrangement mode of equilateral triangle+periphery two circles for concentric circles+centres circle.

2, a kind of economic environment-friendly type fluidized bed furnace dispersion plate according to claim 1 is characterized in that, the preferred eyelet rate cup of dispersion plate (1) is 1.0-1.2%, and main bed is 0.8-0.9%, and the preferred diameter of phi of blast cap hole (5) is 6mm; The preferred number of the perforate (6) on card (3) is 1780-1800.