CN201415104Y - Smoke distributor - Google Patents

Abstract

The utility model relates to a smoke distributor used in a smoke desulfurizer, which comprises a plurality of conical cylinder bodies whose maximum diameters are unequal, the upper ends of the conicalcylinder bodies with smaller diameters are communicated with a smoke inlet pipe through a bend pipe, the lower ends of the conical cylinder bodies with bigger diameters are communicated with a desulfurization tower, and the conical cylinder bodies are sleeved in turn according to the sizes of the maximum diameters, wherein the center line of the conical cylinder body whose maximum diameter is smaller offsets a certain distance relative to the center line of the conical cylinder body whose peripheral maximum diameter is bigger towards one side, and the deviation direction is close to one sideof the bend pipe whose bending radius is bigger. The smoke distributor can make smoke and deviation evenly distribute in the desulfurization tower, and has simple structure, easy maintenance, low abrasion degree, no flowing dead zone and little pressure loss.

Description

Flue gas distributor

Technical field

The utility model relates to a kind of flue gas distributor that is used for flue gas desulfur device.

Background technology

Flue gas distributor in the flue gas desulfur device is installed in the smoke inlet place of desulfurizing tower usually, and it connects by the bend pipe smoke-intake pipe usually.At present, using maximum distribution apparatus in the domestic large flue gas desulfurization is louvre type flue gas distributor and smoke distribution plate, and the former redistributes effect to desulfurizing agent and gas in desulfurizing tower relatively poor, influences the utilization rate of desulfurizing agent, and smoke desulfurization efficiency is lower; The latter is better to the distribution effect of flue gas and desulfurizing agent, but complex structure, resistance is bigger, and solid desulfurating agent forms dead bed easily on the distribution grid surface, stop up distribution plate orifices under the bigger condition of smoke moisture easily, and maintenance is difficulty.

Summary of the invention

Technical problem to be solved in the utility model is, provides a kind of and flue gas and desulfurizing agent evenly distributed and simple in structure, easy maintenance, low, the no flow dead of the degree of wear, flue gas distributor that the pressure loss is little in desulfurizing tower.

Flue gas distributor of the present utility model includes a plurality of divergent-cone walls that maximum gauge does not wait, the less upper end of the diameter of divergent-cone wall is communicated with smoke-intake pipe by one section bend pipe, the lower end that the diameter of divergent-cone wall is bigger is connected with desulfurizing tower, the size that each divergent-cone wall is pressed maximum gauge is suit successively, the center line of the center line of the less divergent-cone wall of the maximum gauge divergent-cone wall that its peripheral maximum gauge the is bigger relatively segment distance that offsets to one side wherein, the direction of skew is the bigger side of bending radius near described bend pipe, promptly, in the bigger side of bending radius near bend pipe, the barrel comparatively dense of each divergent-cone wall, and in the less side of bending radius near bend pipe, the barrel of each divergent-cone wall is more sparse.

Principle of the present utility model is: flue gas is in the bend pipe flow process, fluid particle is subjected to the influence of radial effect power, increase by force by the less bigger side pressure of a lateral thrust radius of bending radius at bend pipe, form barometric gradient, it is less that bend pipe is bent the less effluent speed of radius, the effluent speed that bending radius is bigger is the highest, and the state that causes flue gas to enter behind the desulfurizing tower changes.And by structure of distributor of the present utility model, can change flue gas in inner flow velocity of desulfurizing tower and pressure distribution, the dead band that removes smoke and in tower body, form, the stability that keeps heterogeneous fluid, the gas, liquid, solid three-phase is evenly distributed in the desulfurization tower body, improve the utilization rate of desulfurizing agent, reach the purpose that improves desulfuration efficiency.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the less end face structure schematic diagram of the diameter of flue gas distributor of the present utility model;

Fig. 3 is the bigger end face structure schematic diagram of the diameter of flue gas distributor of the present utility model.

The specific embodiment

As shown in the figure, this flue gas distributor includes a plurality of divergent-cone walls 1 that maximum gauge does not wait, the less upper end of the diameter of divergent-cone wall is communicated with smoke-intake pipe by one section bend pipe 2, the lower end that the diameter of divergent-cone wall is bigger is connected with desulfurizing tower 3, the size that each divergent-cone wall is pressed maximum gauge is suit successively, the center line of the center line of the less divergent-cone wall of the maximum gauge divergent-cone wall that its peripheral maximum gauge the is bigger relatively segment distance that offsets to one side wherein, the direction of skew is the bigger side of bending radius near described bend pipe 2, promptly, in the bigger side of bending radius near bend pipe 2, the barrel comparatively dense of each divergent-cone wall 1, and in the less side of bending radius near bend pipe 2, the barrel of each divergent-cone wall 1 is more sparse.

The utility model in the course of the work, the exhaust gas volumn by each divergent-cone wall of distributor is:

$Q_i=Q\frac{{\tan }^2{\mathrm{\θ}}_i-{\tan }^2{\mathrm{\θ}}_{i-1}}{{\tan }^2{\mathrm{\θ}}_N}---\left(1\right)$

In the formula: Q is the total flow of flue gas; θ _iIt is the cone angle of i conic tube; N is the number of conic tube.

Flue gas by the critical pressure drop of distributor is:

$\mathrm{\ΔP}=5800\frac{{\mathrm{\ρ}}_f{U}^2}{2g}---\left(2\right)$

In the formula: ρ _fBe the density of flue gas; U is the Mean Speed of flow of flue gas.

Structure of the present utility model can make the flow field of flue gas and pressure field be more evenly distributed.Can design the gas distributor of different size and distribution unit number according to the exhaust gas volumn of handling.

Claims (1)

1, a kind of flue gas distributor, it is characterized in that: it includes a plurality of divergent-cone walls (1) that maximum gauge does not wait, the less upper end of the diameter of divergent-cone wall is communicated with smoke-intake pipe by one section bend pipe (2), the lower end that the diameter of divergent-cone wall is bigger is connected with desulfurizing tower (3), the size that each divergent-cone wall is pressed maximum gauge is suit successively, the center line of the center line of the less divergent-cone wall of the maximum gauge divergent-cone wall that its peripheral maximum gauge the is bigger relatively segment distance that offsets to one side wherein, the direction of skew is the bigger side of bending radius near bend pipe (2).

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