CN210718699U

CN210718699U - Impact type gas-solid separator suitable for sleeve kiln

Info

Publication number: CN210718699U
Application number: CN201921698320.3U
Authority: CN
Inventors: 张林进; 庞焕军; 唐丹; 赵波; 黄黾
Original assignee: SINOCALCI Technology Corp
Current assignee: SINOCALCI Technology Corp
Priority date: 2019-10-11
Filing date: 2019-10-11
Publication date: 2020-06-09
Anticipated expiration: 2029-10-11
Also published as: WO2021068314A1

Abstract

The utility model discloses a striking formula gas-solid separation ware suitable for sleeve kiln, which comprises a housin, the gas fume inlet has been seted up to the one end of casing, the exhanst gas outlet has been seted up to the other end of casing, gas fume inlet and exhanst gas outlet intercommunication, the inside vertical installation of casing blocks the piece, it forms and blocks the row to block piece align to grid, block that the row is crisscross to be set up inside the casing. The utility model discloses utilize the separation principle of dust inertia-striking-subsidence, carry out inertial separation in the flue that the high temperature flue gas goes out between sleeve kiln, the air inlet heat exchanger, separate most dust from the high temperature flue gas to prolong air heat exchanger's clearance cycle, created the condition for the steady operation of annular sleeve kiln. The utility model discloses to blockking the piece and blockking the arranged arrangement and having optimized, in suitable pressure drop within range, the maximize rate of gathering dust.

Description

Impact type gas-solid separator suitable for sleeve kiln

Technical Field

The utility model relates to a gas-solid splitter technical field specifically is a striking formula gas-solid separation ware suitable for sleeve kiln.

Background

The sleeve kiln is a lime kiln and has the characteristics of low heat consumption, high lime activity, simple structure and strong fuel adaptability. The annular sleeve kiln is provided with an air heat exchanger, and high-temperature flue gas discharged from the upper inner sleeve is utilized to preheat driving air. The air heat exchanger is all shell-and-tube, the tube side is high-temperature flue gas, and the shell side is driving air. When the raw material limestone used has poor anti-explosion performance and high impurity content, the dust of high-temperature flue gas from the inner part of the upper inner sleeve often causes the blockage of the heat exchanger tube bundle, and the shutdown maintenance of the sleeve kiln is forced when the dust is serious. In order to not influence the normal production of the lime kiln, some production units adopt a mode of using one heat exchanger for one time and preparing the heat exchanger for one time, and although the requirements of normal production can be met, the problems of cleaning of the heat exchanger, the sealing performance and the service life of the high-temperature flue gas gate valve, the one-time investment cost of the standby heat exchanger, the process arrangement of the standby heat exchanger and the like are not ignored.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a striking formula gas-solid separation ware suitable for sleeve kiln, this striking formula gas-solid separation ware set up between sleeve kiln and air heat exchanger for the partly dust of entrapment is favorable to alleviateing the jam condition of flue gas tube side in the sleeve kiln air heat exchanger.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an impact-type gas-solid separator suitable for sleeve kiln, includes the casing, the flue gas inlet has been seted up to the one end of casing, the exhanst gas outlet has been seted up to the other end of casing, flue gas inlet and exhanst gas outlet intercommunication, the inside vertical installation of casing blocks, it blocks the piece align to arrange to form and blocks the row, block that the row is crisscross to be set up inside the casing.

Preferably, the blocking piece is a U-shaped channel steel, and the U-shaped opening of the blocking piece faces the smoke inlet.

Preferably, the barrier rows are provided with 3 rows.

Preferably, the spacing between adjacent barrier rows is S1, the spacing between adjacent barriers in each barrier row is S2, the transverse width of the barriers is B1, and the longitudinal width of the barriers is B2, wherein 3.0 ≦ S1/B1 ≦ 1.5, and 1.3 ≦ (S2+ B2)/B2 ≦ 2.5.

Preferably, S1/B1 is 2.6, and (S2+ B2)/B2 is 1.4, at which time the dust collection rate is 63.3% and the pressure drop is 680 Pa.

Preferably, the inner wall of the shell is provided with a heat-insulating layer, and the heat-insulating layer is made of refractory materials.

Preferably, the bottom of the shell is provided with a cone hopper, the cone hopper is arranged right below the blocking piece, and the cone hopper is used for collecting dust separated by the blocking piece.

Preferably, the flue gas inlet is higher than the flue gas outlet.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses utilize the separation principle of dust inertia-striking-subsidence, carry out inertial separation in the flue that the high temperature flue gas goes out between sleeve kiln, the air inlet heat exchanger, separate most dust from the high temperature flue gas to prolong air heat exchanger's clearance cycle, created the condition for the steady operation of annular sleeve kiln. The utility model discloses to blockking the piece and blockking the arranged arrangement and having optimized, in suitable pressure drop within range, the maximize rate of gathering dust.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view taken along the direction B-B of the present invention;

fig. 3 is a schematic structural view in the direction a of the present invention;

fig. 4 is a schematic structural diagram of the blocking member and the blocking row of the present invention.

In the figure: 1. a housing; 2. a flue gas inlet; 3. a flue gas outlet; 4. a blocking member; 5. a heat-insulating layer; 6. a conical hopper.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, an impact type gas-solid separator suitable for a sleeve kiln comprises a housing 1, wherein one end of the housing 1 is provided with a flue gas inlet 2, the other end of the housing 1 is provided with a flue gas outlet 3, the flue gas inlet 2 is higher than a flue gas outlet 4, the flue gas inlet 2 is communicated with the flue gas outlet 3, the inner wall of the housing 1 is provided with a heat insulation layer 5, and the heat insulation layer 5 is made of a refractory material; the blocking piece 4 is vertically arranged in the shell 1, the blocking piece 4 is a U-shaped channel steel, the U-shaped opening of the blocking piece 4 faces the flue gas inlet, the blocking pieces 4 are uniformly arranged to form blocking rows, and the blocking rows are arranged in the shell 1 in a staggered mode; the bottom of the shell 1 is provided with a cone hopper 6, the cone hopper 6 is arranged right below the blocking piece 4, and the cone hopper 6 is used for collecting dust separated by the blocking piece 4.

In high temperature flue gas left the back from the sleeve kiln and gets into casing 1 through gas inlet 2, the dust granule striking that the flue gas carried was blockked 4 and blockked to block to freely fall into and block the awl fill 6 of 4 below and collect, in the flue gas through the separation got into air heat exchanger by exhanst gas outlet 3, the utility model discloses separate most dust from high temperature flue gas to air heat exchanger's clearance cycle has been prolonged, created the condition for the steady operation of annular sleeve kiln.

In a preferred embodiment, the barrier rows are provided with 3 rows. In the literature, numerical experimental research on hydrodynamic characteristics of fluids in a U-shaped groove tube bundle inertial separator (dynamic engineering, 2002,22(5): 1936-. Since the size of the impingement gas-solid separator is limited by the length of the piping between the air heat exchanger and the shaft kiln, the number of rows of barrier rows is at most 4 rows. Although the dust collection rate of the 4 rows of barrier rows was slightly higher than that of the 3 rows of barrier rows, the pressure drop of the 4 rows of barrier rows was greatly increased, so that the arrangement of the 3 rows of barrier rows was significantly better than the arrangement of the 4 rows of barrier rows. Wherein, the pressure drop refers to the pressure difference between the flue gas inlet 2 and the flue gas outlet 3.

The spacing between adjacent barrier rows is S1, the spacing between adjacent barriers 4 in each barrier row is S2, the transverse width of the barrier 4 is B1, and the longitudinal width of the barrier 4 is B2, and on the premise that the barrier rows are arranged in 3 rows, S1, S2, B1 and B2 are all important factors influencing dust collection rate. In the embodiment, the flue gas amount under the normal full-load operation condition of the 500TPD annular sleeve kiln is adopted to carry out calculation by changing the spacing S2 of the blocking pieces and the spacing S1 of the blocking rows, and the dust is considered to be trapped when contacting five wall surfaces of the cone hopper 6, and the calculation results are shown in the following table.

As can be seen from the above table, when the spacing S2 of the blocking pieces 4 is kept constant, the smaller the blocking row spacing S1 is, the higher the dust collecting rate is, and the higher the pressure drop is; when the barrier row spacing S1 is kept constant, the smaller the spacing S2 of the blocking member 4, the higher the dust collecting rate, and the higher the pressure drop. Meanwhile, the influence of the blocking row spacing S1 on the dust collection rate is larger, and under the condition of the same proportion, the dust collection rate of the corresponding blocking row spacing S1 is higher, so that the dust collection rate can be improved by reducing the blocking row spacing S1, and meanwhile, the spacing S2 of the blocking pieces 4 can be properly increased for reducing the pressure drop of the inlet and the outlet.

The utility model discloses a do not influence the normal operating of the whole technology of annular sleeve kiln, air heat exchanger place pipeline resistance falls and need keep in certain within range, consequently, in the pressure drop within range that is applicable to sleeve kiln and air heat exchanger, 3.0 is less than or equal to S1/B1 and is less than or equal to 1.5, and 1.3 is less than or equal to (S2+ B2)/B2 and is less than or equal to 2.5, can obtain higher dust collection rate.

In a preferred embodiment, S1/B1 is 2.6, and (S2+ B2)/B2 is 1.4, where the pressure drop is 680Pa and the dust collection rate is 63.3%, and the dust collection rate is maximized within a suitable pressure drop range.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides an impact type gas-solid separator suitable for sleeve kiln, includes the casing, its characterized in that, the flue gas inlet has been seted up to the one end of casing, the exhanst gas outlet has been seted up to the other end of casing, flue gas inlet and exhanst gas outlet intercommunication, the inside vertical installation of casing blocks, block the piece align to grid and form and block the row, block the row crisscross setting in the casing inside.

2. The impact gas-solid separator for a sleeve kiln according to claim 1, wherein the blocking member is a U-shaped channel, the U-shaped opening of the blocking member facing the flue gas inlet.

3. The impact gas-solid separator for a sleeve kiln according to claim 2, wherein the barrier rows are provided with 3 rows.

4. The impact gas-solid separator suitable for use in a sleeve kiln as set forth in claim 3, wherein the spacing between adjacent barrier rows is S1, the spacing between adjacent barriers in each barrier row is S2, the transverse width of the barriers is B1, and the longitudinal width of the barriers is B2, wherein 3.0. ltoreq. S1/B1. ltoreq.1.5, and 1.3. ltoreq. S2+ B2)/B2. ltoreq.2.5.

5. The impact gas-solid separator suitable for sleeve kilns of claim 4 wherein S1/B1 is 2.6 and (S2+ B2)/B2 is 1.4.

6. The impact gas-solid separator for a sleeve kiln according to any one of claims 1-5, wherein the inner wall of the casing is provided with an insulating layer, and the insulating layer is made of refractory material.

7. The impact gas-solid separator for sleeve kilns as claimed in any one of claims 1-5, wherein the bottom of the casing is provided with a cone hopper, and the cone hopper is arranged right below the barrier.

8. The impact gas-solid separator for sleeve kilns as claimed in any one of claims 1-5, wherein said flue gas inlet is higher than said flue gas outlet.