CN201052458Y

CN201052458Y - Local gas pulsation type fluid bed device

Info

Publication number: CN201052458Y
Application number: CNU2007200959540U
Authority: CN
Inventors: 李占勇; 叶京生; 宋继田; 黄颖; 刘凤花
Original assignee: Tianjin University of Science and Technology
Current assignee: Tianjin University of Science and Technology
Priority date: 2007-04-30
Filing date: 2007-04-30
Publication date: 2008-04-30
Anticipated expiration: 2017-04-30

Abstract

The utility model relates to a partial gas pulsation fluidized bed, comprising a frame and a bed body, a horizontal dispersion plate is arranged in the bed body, the lower portion of the dispersion plate is equipped with an air inlet chamber, and the lower portion of the air inlet chamber is equipped with a fluidization air inlet pipe and a pulsating air inlet pipe. The utility model is characterized in that the outlet port of the pulsating air inlet pipe is communicated with an air dispersion pipe which is evenly distributed, and the air outlet end of the air dispersion pipe is near to the lower portion of the dispersion plate. The utility model is simple in structure, reasonable in design, and pulsation gas can be evenly and effectively worked on layered material by the air dispersion pipe, the disturbance to the layered material from the air is enhanced, the air-solid contact is strengthened, the heat and mass transfer efficiency is increased, and the energy consumption is lowered.

Description

Localized Airstream Pulsed Fluidized Bed Device

Technical field

The utility model belongs to fluidized bed plant, particularly a kind of Localized Airstream Pulsed Fluidized Bed Device.

Background technology

Fluidized bed plant has higher heat and mass efficient in gas-solid contact (perhaps gas-liquid-solid contact) reaction, be widely used in fields such as chemical industry, food, medicine, energy environment at present.Pulsating fluidized bed be by the air-flow that adopts a control device to make to enter fluidized bed plant produce pulsation (promptly forming the batch (-type) air-flow) increase air-flow to the disturbance of bed material to strengthen the gas-solid contact, existing pulse pneumatic device mostly is greatly in the fluidized bed plant inlet plenum installs a pipeline that has a by-pass valve control, realize the generation of pulse pneumatic by the switching of by-pass valve control, pulse pneumatic at first enters inlet plenum in traditional pulsating fluidized bed before entering fluidising chamber, this inlet plenum then can produce certain pressure stabilization function to pulse pneumatic, cause pulse pneumatic pressure to reduce, thereby suppressed the perturbation action of pulse pneumatic to the bed material, and for fluidized-bed pile therefore because the inlet plenum volume of its bottom is bigger, to then more obvious by the inhibitory action of the pulse pneumatic of air inlet pipeline output.

Summary of the invention

The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of inhibitory action that overcomes inlet plenum to pulse pneumatic is provided, pulse pneumatic evenly useful effect in the Localized Airstream Pulsed Fluidized Bed Device of bed material.

The utility model solves its technical problem and takes following technical scheme to realize:

This Localized Airstream Pulsed Fluidized Bed Device, constitute by frame and bed body, in the bed body horizontal gas distribution grid is installed, the gas distribution grid bottom is equipped with inlet plenum, the inlet plenum bottom is provided with fluidizing gas air inlet pipe and pulsed gas air inlet pipe, it is characterized in that: described pulsed gas air inlet pipe outlet side is communicated with the air-flow dispersion pipe of uniform setting, the below of outlet side neighbour's gas distribution grid of this air-flow dispersion pipe.

And described air-flow dispersion pipe is that 2-6 self-pulsing gas inlet pipe outlet side tilts to disperse also symmetrically arranged straight tube to all around.

And described a plurality of air-flow dispersion pipes also can be 2-6 symmetrically arranged bend pipe.

And described air-flow dispersion pipe is installed on the installing sleeve jointly, and this installing sleeve is coaxially installed on pulsed gas air inlet pipe top.

And described air-flow dispersion pipe is set in outside the pulsed gas air inlet pipe by a support cylinder sleeve coaxial rotation, and the end of stretching out inlet plenum at this support cylinder sleeve is fixed with a driven pulley, this driven pulley with drive by a drive motors and transmission mechanism.

Advantage of the present utility model and good effect are:

1. pass through the air-flow dispersion pipe of setting in this device, can make pulse pneumatic directly evenly act on the bed material effectively, avoid owing to inlet plenum suppresses the action effect of pulse pneumatic to the bed material to the pressure stabilization function of air-flow, strengthen air-flow the gas-solid contact is strengthened in the disturbance of bed material simultaneously, effectively improve heat and mass efficient.

2. the air-flow dispersion pipe can be designed to straight tube or bend pipe according to the needs of fluidized bed plant, and the position of the outlet side of air-flow dispersion pipe can be arranged at any position radially of gas distribution grid as required, as its port of export can being arranged at the most peripheral below of gas distribution grid circumference, to overcome material particles in problems such as the accumulation of bed periphery, cakings; Also can be arranged at the gas distribution grid zone line, so that pulse pneumatic acts on bed integral body.

3. the air-flow dispersion pipe also can be installed on a stop sleeve top, this stop sleeve can be by its rotation of motor-driven, the air-flow dispersion pipe carries out disturbance to the bed material when rotating with stop sleeve thus, need not to be provided with many air-flow dispersion pipes and can realize whole disturbance bed, further improve heat and mass efficient in the device, more be applicable to large-scale fluidized bed equipment.

4. the utility model is simple in structure, design science is reasonable, by being set, the air-flow dispersion pipe make pulse pneumatic directly evenly act on the bed material effectively, strengthen air-flow the gas-solid contact is strengthened in the disturbance of bed material simultaneously, effectively improve heat and mass efficient, have energy-saving and cost-reducing advantage simultaneously.

Description of drawings

Fig. 1 is structural representation of the present utility model (cutaway view);

Fig. 2 is the A-A profile of Fig. 1;

Fig. 3 is the structural representation (cutaway view) of bend pipe for the utility model air-flow dispersion pipe;

Fig. 4 is the structural representation (cutaway view) that the utility model air-flow dispersion pipe is rotated by motor-driven.

The specific embodiment

Below in conjunction with accompanying drawing embodiment of the present utility model is further described:

This Localized Airstream Pulsed Fluidized Bed Device, constitute by frame 7 and bed body 2, in the bed body horizontal gas distribution grid 5 is installed, bed body bottom is equipped with inlet plenum 10, the inlet plenum bottom is provided with fluidizing gas air inlet pipe 9 and pulsed gas air inlet pipe 12, also is provided with feed pipe 13, discharge nozzle 6 and air outlet 1 on the bed body.

The innovative point of this fluidized bed plant is: pulsed gas air inlet pipe outlet side is communicated with a plurality of uniform air-flow dispersion pipes 8, this air-flow dispersion pipe is installed on the installing sleeve 11 jointly, this installing sleeve is coaxially installed on pulsed gas air inlet pipe top, the outlet side that these a plurality of air-flow dispersion pipes are the self-pulsing gas inlet pipe tilts to disperse the straight tube of setting to all around, as shown in Fig. 1, Fig. 2, the air-flow dispersion pipe also can be bend pipe 14, as shown in Figure 3, according to different needs, can change multi-form air-flow dispersion pipe.The air-flow dispersion pipe is preferably 2-6 and is symmetrical arranged, and is example with four air-flow dispersion pipes in the present embodiment, certainly also can be according to size, the gas distribution grid percent opening of bed body, and factor such as pulse pneumatic size is designed to the air-flow dispersion pipe more than six.The port of export neighbour of air-flow dispersion pipe is distributed in gas distribution grid below in the inlet plenum, but on the whole bed material 4 of pulsate fluidizing gas stepless action in fluidising chamber 3.The gas that the pulsed gas air inlet pipe of this fluidized bed plant is fed is pulsate fluidizing gas, can certainly lead to stabilization fluid gas, also can increase the bed disturbance to a certain extent.

The air-flow dispersion pipe can also be communicated in a support cylinder sleeve 18, be set in outside the pulsed gas air inlet pipe by this support cylinder sleeve coaxial rotation, between support cylinder sleeve and the pulsed gas air inlet pipe bearing 20 can be installed, be fixed with a driven pulley 19 in the end that this support cylinder sleeve stretches out inlet plenum, this driven pulley with drive by a drive motors 15 and transmission mechanism 16, the driving wheel interlock that the output of driven pulley and transmission mechanism is installed, realization is driven the support cylinder sleeve and is driven the purpose that the air-flow dispersion pipe rotates by drive motors, driving wheel and driven pulley can be the form of belt pulley by belt 17 realization interlocks, also can be gear is realized interlock by tooth bar form.

Claims

1. Localized Airstream Pulsed Fluidized Bed Device, constitute by frame and bed body, in the bed body horizontal gas distribution grid is installed, the gas distribution grid bottom is equipped with inlet plenum, the inlet plenum bottom is provided with fluidizing gas air inlet pipe and pulsed gas air inlet pipe, it is characterized in that: described pulsed gas air inlet pipe outlet side is communicated with the air-flow dispersion pipe of uniform setting, the below of outlet side neighbour's gas distribution grid of this air-flow dispersion pipe.

2. Localized Airstream Pulsed Fluidized Bed Device according to claim 1 is characterized in that: described air-flow dispersion pipe is that 2-6 self-pulsing gas inlet pipe outlet side tilts to disperse also symmetrically arranged straight tube to all around.

3. Localized Airstream Pulsed Fluidized Bed Device according to claim 1 is characterized in that: described a plurality of air-flow dispersion pipes also can be 2-6 symmetrically arranged bend pipe.

4. according to claim 1 or 2 or 3 described Localized Airstream Pulsed Fluidized Bed Devices, it is characterized in that: described air-flow dispersion pipe is installed on the installing sleeve jointly, and this installing sleeve is coaxially installed on pulsed gas air inlet pipe top.

5. Localized Airstream Pulsed Fluidized Bed Device according to claim 4, it is characterized in that: described air-flow dispersion pipe is set in outside the pulsed gas air inlet pipe by a support cylinder sleeve coaxial rotation, the end of stretching out inlet plenum at this support cylinder sleeve is fixed with a driven pulley, this driven pulley with drive by a drive motors and transmission mechanism.