CN208406113U - A kind of calcination rotary kiln tail gas pre-concentration spent acid device - Google Patents

A kind of calcination rotary kiln tail gas pre-concentration spent acid device Download PDF

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Publication number
CN208406113U
CN208406113U CN201820661694.7U CN201820661694U CN208406113U CN 208406113 U CN208406113 U CN 208406113U CN 201820661694 U CN201820661694 U CN 201820661694U CN 208406113 U CN208406113 U CN 208406113U
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China
Prior art keywords
gas
tail gas
spent acid
rotary kiln
kiln tail
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CN201820661694.7U
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Chinese (zh)
Inventor
顾勇
杜茂平
王唯诚
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NANJING TITANIUM DIOXIDE CHEMICAL CO Ltd
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NANJING TITANIUM DIOXIDE CHEMICAL CO Ltd
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Abstract

The utility model relates to a kind of calcination rotary kiln tail gas pre-concentration spent acid devices, including calcination rotary kiln tail gas air inlet pipe, central jets, venturi, gas-liquid separation device and the light spent acid medial launder of pre-concentration, venturi upper end is equipped with calcination rotary kiln tail gas air inlet pipe, venturi lower end is connected with gas-liquid separation device, gas-liquid separation device is connected with the light spent acid medial launder of pre-concentration, venturi inner top side is equipped with ring sparger, gas-liquid separation device is connected by spray piping with central jets, central jets are arranged below ring sparger, gas-liquid separation device includes shell, shell inner top side is equipped with gas-liquid separate component, gas-liquid separate component includes separate pipeline, left and right ends are equipped with flow distribution plate on the inside of separate pipeline, flow distribution plate is staggered on the inside of separate pipeline, through-hole is equipped on the outside of separate pipeline, the utility model uses light spent acid and forges The mode that tail gas is mixed in venturi is burnt, the thermal energy of effective use calcining tail gas realizes the high efficient heat exchanging of light spent acid Yu calcination rotary kiln tail gas.

Description

A kind of calcination rotary kiln tail gas pre-concentration spent acid device
Technical field
The utility model relates to a kind of calcination rotary kiln tail gas pre-concentration spent acid devices, belong to sulfuric acid method titanium pigment production and set Standby field.
Background technique
In sulfuric acid method titanium pigment production, the tail gas that calcination rotary kiln generates is needed by electric dust removing system, will be in tail gas Particulate separation, using venturi, the treating tail gas link such as desulfurizing tower, electric demisting realizes the qualified discharge of calcining tail gas. Under general condition, the temperature for calcining tail gas is 250 ~ 400 DEG C, and subsequent tail gas passes through different abatement equipments, and temperature gradually reduces, 70 DEG C can be reduced hereinafter, existing for the waste heat of calcining tail gas at present preferably reapply technology, such as light in desulfurizing tower Pre-concentration of spent acid etc. recycles technique.But current light spent acid pre-concentration be mostly only single nozzle venturi it is complete At, cause light spent acid with calcining tail gas cannot be sufficiently mixed, heat exchanger effectiveness is not high, and the effect to light waste acid concentration is not very It is good.
Utility model content
The utility model is directed to the deficiencies in the prior art, provides a kind of calcination rotary kiln tail gas pre-concentration spent acid Device, to solve problems of the prior art.
To achieve the above object, the technical solution adopted in the utility model is as follows:
A kind of calcination rotary kiln tail gas pre-concentration spent acid device, including calcination rotary kiln tail gas air inlet pipe, central jets, text Qiu Li, gas-liquid separation device and the light spent acid medial launder of pre-concentration, the venturi upper end are equipped with the air inlet of calcination rotary kiln tail gas Pipe, the venturi lower end are connected with gas-liquid separation device, and the gas-liquid separation device is connected with the light spent acid medial launder of pre-concentration, The venturi inner top side is equipped with ring sparger, and the gas-liquid separation device is connected by spray piping with central jets, described Central jets are arranged below ring sparger, and the gas-liquid separation device includes shell, and the shell inner top side is equipped with gas-liquid point From component, the gas-liquid separate component includes separate pipeline, and the separate pipeline upper end is equipped with feed inlet, under the separate pipeline End is equipped with discharge port, and left and right ends are equipped with flow distribution plate on the inside of the separate pipeline, and the flow distribution plate is staggered in separating pipe On the inside of road, through-hole is equipped on the outside of the separate pipeline, the upper shell is equipped with exhaust outlet, is equipped with drain on the right side of the shell Mouthful, reflux line is equipped on the left of the shell, the reflux line is equipped with pump, and the reflux line upper end passes through filter device It is connected with separate pipeline, spray port is equipped on the left of the shell, the spray port is arranged below reflux line.
As a kind of improvement of the utility model, the flow distribution plate is vertically set on the inside of separate pipeline.
As a kind of improvement of the utility model, the quantity of the through-hole is at least two.
As a kind of improvement of the utility model, the quantity of the flow distribution plate is at least two.
As a kind of improvement of the utility model, the filter device includes filter screen, and the quantity of the filter screen is extremely It is 2 few.
Due to using the above technology, the utility model compared with the prior art, is had the advantage that as follows:
The utility model is that a kind of structure is simple, a kind of safe and reliable, easy to use, low-cost calcination rotary kiln tail Gas pre-concentration spent acid device, the utility model using light spent acid with calcining tail gas in such a way that venturi mixes, effective use is forged The thermal energy for burning tail gas, realizes the high efficient heat exchanging of light spent acid Yu calcination rotary kiln tail gas, is conducive to the energy-saving of production technology.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of calcination rotary kiln tail gas pre-concentration spent acid device;
Fig. 2 is the structural schematic diagram of gas-liquid separation device;
Fig. 3 is the structural schematic diagram of separate pipeline;
In figure: 1, calcination rotary kiln tail gas air inlet pipe, 2, central jets, 3, venturi, 4, gas-liquid separation device, 5, pre- dense Contract light spent acid medial launder, 6, ring sparger, 7, shell, 8, separate pipeline, 9, feed inlet, 10, discharge port, 11, flow distribution plate, and 12, logical Hole, 13, exhaust outlet, 14, leakage fluid dram, 15, reflux line, 16, pump, 17, filter screen, 18, spray port.
Specific embodiment
With reference to the accompanying drawings and detailed description, the utility model is furtherd elucidate.
In conjunction with attached drawing as it can be seen that a kind of calcination rotary kiln tail gas pre-concentration spent acid device, including calcination rotary kiln tail gas air inlet Pipe 1, central jets 2, venturi 3, gas-liquid separation device 4 and the light spent acid medial launder 5 of pre-concentration, 3 upper end of venturi are set There is calcination rotary kiln tail gas air inlet pipe 1,3 lower end of venturi is connected with gas-liquid separation device 4, the gas-liquid separation device 4 It is connected with the light spent acid medial launder 5 of pre-concentration, 3 inner top side of venturi is equipped with ring sparger 6, and the gas-liquid separation device 4 is logical It crosses spray piping to be connected with central jets 2, the central jets 2 are arranged below ring sparger 6, and the gas-liquid separation device 4 wraps Shell 7 is included, 7 inner top side of shell is equipped with gas-liquid separate component, and the gas-liquid separate component includes separate pipeline 8, described 8 upper end of separate pipeline is equipped with feed inlet 9, and 8 lower end of separate pipeline is equipped with discharge port 10, left and right on the inside of the separate pipeline 8 Both ends are equipped with flow distribution plate 11, and the flow distribution plate 11 is staggered on the outside of 8 inside of separate pipeline, the separate pipeline 8 and is equipped with Through-hole 12,7 upper end of shell are equipped with exhaust outlet 13, leakage fluid dram 14 are equipped on the right side of the shell 7, is equipped on the left of the shell 7 Reflux line 15, the reflux line 15 are equipped with pump 16, and 15 upper end of reflux line passes through filter device and separate pipeline 8 It is connected, spray port 18 is equipped on the left of the shell 7, the spray port 18 is arranged below reflux line 15.
The flow distribution plate 11 is vertically set on 8 inside of separate pipeline.
The quantity of the through-hole 12 is at least two.
The quantity of the flow distribution plate 11 is at least two.
The filter device includes filter screen 17, and the quantity of the filter screen 17 is at least two.
The utility model, specific use process is as follows:
Calcination rotary kiln tail gas enters venturi 3, the light spent acid from washing by calcination rotary kiln tail gas air inlet pipe 1 250 ~ 380g/L sprays the calcination rotary kiln tail gas for entering venturi 3 by the ring sparger 6 installed inside venturi 3 Cooling, light spent acid and calcination rotary kiln tail gas complete heat exchange in venturi 3, by calcination rotary kiln waste heat from tail gas, light Part moisture content in spent acid is converted into vapor, improves acid-spending strength to 450 ~ 500 g/L, then mixed flue gas and it is pre- it is dense after Spent acid completes gas-liquid separation in gas-liquid separation device 4, and mixed flue gas is through the exhaust outlet 13 in gas-liquid separation device 4, into de- After the exhaust gas processing devices purification such as sulphur, electric demisting, qualified discharge, spent acid overflow after pre-concentration to the light spent acid medial launder of pre-concentration 5, then give to next process.
Spent acid after pre-concentration is entered in venturi 3 by spray port 18, central jets 2, and to entrance venturi 3 Calcination rotary kiln tail gas carries out spraying cooling, to realize the recycling to tail gas.
When separating to gas-liquid, gas-liquid enters in separate pipeline 8 gas-liquid separation device 4 from feed inlet 9, and passes through The flow distribution plate 11 being staggered is shunted, and the gas after separation is entered in shell 7 by through-hole 12, and passes through exhaust outlet 13 It being discharged, the partially liq after separation enters in separate pipeline 8 by reflux line 15, and carries out secondary gas-liquid separation, To effectively increase separative efficiency;Partially liq after shunting enters in central jets 2 by spray piping, and to literary mound In tail gas in 3 carry out spraying cooling.
Above-described embodiment is only the optimal technical scheme of the utility model, and is not construed as the limit for the utility model System, the technical solution that the protection scope of the utility model should be recorded with claim, the technical solution recorded including claim The equivalents of middle technical characteristic are protection scope, i.e., equivalent replacement within this range is improved, also in the utility model Protection scope within.

Claims (5)

1. a kind of calcination rotary kiln tail gas pre-concentration spent acid device, it is characterised in that: including calcination rotary kiln tail gas air inlet pipe, in Heart spray head, venturi, gas-liquid separation device and the light spent acid medial launder of pre-concentration, the venturi upper end are equipped with calcination rotary kiln Tail gas air inlet pipe, the venturi lower end are connected with gas-liquid separation device, in the gas-liquid separation device and the light spent acid of pre-concentration Between slot be connected, the venturi inner top side be equipped with ring sparger, the gas-liquid separation device pass through spray piping and central jets It is connected, the central jets are arranged below ring sparger, and the gas-liquid separation device includes shell, and the shell inner top side is set Have gas-liquid separate component, the gas-liquid separate component includes separate pipeline, the separate pipeline upper end be equipped with feed inlet, described point It is equipped with discharge port from lower end of duct, left and right ends are equipped with flow distribution plate on the inside of the separate pipeline, and the flow distribution plate is staggered On the inside of separate pipeline, through-hole is equipped on the outside of the separate pipeline, the upper shell is equipped with exhaust outlet, sets on the right side of the shell There is leakage fluid dram, reflux line is equipped on the left of the shell, the reflux line is equipped with pump, and the reflux line upper end passed through Filter device is connected with separate pipeline, and spray port is equipped on the left of the shell, and the spray port is arranged below reflux line.
2. a kind of calcination rotary kiln tail gas pre-concentration spent acid device according to claim 1, it is characterised in that: the shunting Plate is vertically set on the inside of separate pipeline.
3. a kind of calcination rotary kiln tail gas pre-concentration spent acid device according to claim 1, it is characterised in that: the through-hole Quantity be at least two.
4. a kind of calcination rotary kiln tail gas pre-concentration spent acid device according to claim 1, it is characterised in that: the shunting The quantity of plate is at least two.
5. a kind of calcination rotary kiln tail gas pre-concentration spent acid device according to claim 1, it is characterised in that: the filtering Device includes filter screen, and the quantity of the filter screen is at least two.
CN201820661694.7U 2018-05-05 2018-05-05 A kind of calcination rotary kiln tail gas pre-concentration spent acid device Active CN208406113U (en)

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CN201820661694.7U CN208406113U (en) 2018-05-05 2018-05-05 A kind of calcination rotary kiln tail gas pre-concentration spent acid device

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Application Number Priority Date Filing Date Title
CN201820661694.7U CN208406113U (en) 2018-05-05 2018-05-05 A kind of calcination rotary kiln tail gas pre-concentration spent acid device

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113350812A (en) * 2021-07-08 2021-09-07 攀钢集团研究院有限公司 Method and device for concentrating waste acid

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113350812A (en) * 2021-07-08 2021-09-07 攀钢集团研究院有限公司 Method and device for concentrating waste acid

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