CN104084039B - Containing low concentration H 2the Non-toxic treatment method of S tail gas and device - Google Patents

Containing low concentration H 2the Non-toxic treatment method of S tail gas and device Download PDF

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Publication number
CN104084039B
CN104084039B CN201410355416.5A CN201410355416A CN104084039B CN 104084039 B CN104084039 B CN 104084039B CN 201410355416 A CN201410355416 A CN 201410355416A CN 104084039 B CN104084039 B CN 104084039B
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blender
chamber
tail gas
catalyst
inlet pipe
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CN201410355416.5A
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CN104084039A (en
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胡智勇
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XINHUANG HECHUANG NEW MATERIAL Co Ltd
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XINHUANG HECHUANG NEW MATERIAL Co Ltd
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Abstract

The invention discloses a kind of containing low concentration H 2the Non-toxic treatment method of S tail gas and device.This Non-toxic treatment method comprises containing low concentration H 2the tail gas of S first contacts with the catalyst in a catalyst blender, makes H 2s activates, and the tail gas after activation mixes with combustion product gases again, and pyrolysis occurs, and generates SO 2and H 2o, last gaseous mixture enters conventional desulfurization treatment process, completes Non-toxic process.This device comprises catalyst blender, smoke inlet pipe, tail gas air inlet pipe and blender escape pipe, catalyst blender comprises blender body, orifice plate and catalyst network, blender body is divided into the first chamber and the second chamber by orifice plate, smoke inlet pipe stretches in the second chamber, and catalyst network is between smoke inlet pipe and the first chamber.Method of the present invention effectively can remove the low concentration H contained in tail gas 2s gas, security are high, effective and stable, and device of the present invention can produce negative pressure, promote the carrying out of reaction, simple and convenient.

Description

Containing low concentration H 2the Non-toxic treatment method of S tail gas and device
Technical field
The present invention relates to a kind of Non-toxic process of poisonous tail gas, be specifically related to a kind of containing low concentration H 2the Non-toxic treatment method of the tail gas of S gas and device.
Background technology
Blanc fixe is an important branch of barium salt industry, in national economy, occupy irreplaceable effect always.Particularly in recent years, along with industrial upgrading and structural adjustment, blanc fixe particularly high-quality blanc fixe is widely applied, such as, can be applicable to numerous new material and the sciemtifec and technical spheres such as high-end coating (automobile, Aero-Space, boats and ships etc.), engineering plastic modification (modified PE, MODIFIED PP, modified ABS etc.), energy-conservation energy-accumulating material (high-energy battery), electronic material (as integrated circuit printing), friction material (low thermal resistance, low wear material), the development for high-quality blanc fixe provides huge market prospects.
And the production of blanc fixe, mainly contain two kinds of methods: one is grey black-mirabilite method, another kind is brium carbonate-sulfuric acid process.The former main manufacture level conventional precipitation barium sulfate, is mainly used in the filling of common paint, coating; The latter's mainly production high-quality fine precipitate barium sulfate, is applied to many new high-tech material fields.Blanc fixe industry, in China, there is longer history, rely on barium ore deposit (barite) resource (total storage accounts for the world 80%) of China's abundant, China is barium sulfate big producing country always, but due to long-term technology insufficient investment, in addition foreign technology blocks, product is based on the thick level product of low side, strong greatly and not, and resource consumption, energy resource consumption are high, environmental pollution is serious, is the industry being badly in need of transition and upgrade and adjust structure.In recent years, due to the dual promotion of national industrial policies and environmental protection policy, each enterprise and mechanism have very large input and obtain large quantities of achievement in manufacturing technology and properties of product, but in environment protection treating, not yet there is larger breakthrough, particularly toxic gas is administered weak, also therefore a lot of security incident occurs every year.Therefore, how the process of economically viable nontoxicization is carried out to the poisonous tail gas that blanc fixe produces, become a problem of can not ignore of blanc fixe production industry sustainable health development.
Summary of the invention
The technical problem to be solved in the present invention overcomes the deficiencies in the prior art, provides a kind of and effectively can remove the low concentration H contained in tail gas 2s gas, security high, simple and convenient, effective and stable containing low concentration H 2the Non-toxic treatment method of S tail gas, also corresponding provide a kind of can produce negative pressure carry out to promote to react, simple to operation, with low cost containing low concentration H 2the Non-toxic treating apparatus of S tail gas.
For solving the problems of the technologies described above, the technical solution used in the present invention is a kind of containing low concentration H 2the Non-toxic treatment method of S tail gas, comprises the following steps: will containing low concentration H 2the tail gas of S and combustion product gases are delivered in the catalyst blender of a Non-toxic treating apparatus, and described tail gas first contacts with catalyst (i.e. catalyst) contained in catalyst blender, makes H 2s activates, and activation temperature is 80 DEG C ~ 140 DEG C, and the tail gas after activation mixes with the combustion product gases in catalyst blender again, makes the H in tail gas 2o in S and combustion product gases 2there is pyrolysis, generate SO 2and H 2o (gas), last SO 2, H 2o enters conventional desulfurization treatment process with remaining tail gas together with combustion product gases, completes Non-toxic process.
In above-mentioned Non-toxic treatment method, preferably, described catalyst is platinum.
In above-mentioned Non-toxic treatment method, preferably, described containing low concentration H 2in the tail gas of S, H 2the volume fraction of S is less than 5%; O contained by described combustion product gases 2volume fraction be 10% ~ 30%.
In above-mentioned Non-toxic treatment method, preferably, described containing low concentration H 2the tail gas of S is the synthesis tail gas of brium carbonate-Production By Sulfuric Acid Process blanc fixe, or is the adjustment operation tail gas that grey black-mirabilite method produces blanc fixe, or for producing the synthesis tail gas of barium nitrate; Described combustion product gases is the flue gas that conventional combustion workshop section produces.
In above-mentioned Non-toxic treatment method, preferably, described Non-toxic treating apparatus comprises catalyst blender, smoke inlet pipe, tail gas air inlet pipe and blender escape pipe; Described catalyst blender comprises blender body, orifice plate and catalyst network, described orifice plate is arranged in the inner chamber of described blender body, the inner chamber of blender body is divided into the first chamber and the second chamber, described orifice plate is provided with multiple through hole for the tail gas after activation to be sent to the second chamber from the first chamber, one end of described blender body is provided with the gas approach with the first chamber, the side of described blender body is provided with the inlet exhaust gas with the first chamber, and the other end of described blender body is provided with the mixer outlet with the second chamber; Described smoke inlet pipe stretches in the second chamber through described gas approach, the first chamber and orifice plate, described catalyst network between described smoke inlet pipe and the first chamber, for making the H in tail gas 2s activates, and described tail gas air inlet pipe is connected with the first chamber by described inlet exhaust gas, and described blender escape pipe is connected with the second chamber by described mixer outlet.
As a total technical conceive, the present invention also provide a kind of above-mentioned Non-toxic treatment method to use containing low concentration H 2the Non-toxic treating apparatus of S tail gas, is characterized in that, described Non-toxic treating apparatus comprises catalyst blender, smoke inlet pipe, tail gas air inlet pipe and blender escape pipe; Described catalyst blender comprises blender body, orifice plate and catalyst network, described orifice plate is arranged in the inner chamber of described blender body, the inner chamber of blender body is divided into the first chamber and the second chamber, described orifice plate is provided with multiple through hole for the tail gas after activation to be sent to the second chamber from the first chamber, one end of described blender body is provided with the gas approach with the first chamber, the side of described blender body is provided with the inlet exhaust gas with the first chamber, and the other end of described blender body is provided with the mixer outlet with the second chamber; Described smoke inlet pipe stretches in the second chamber through described gas approach, the first chamber and orifice plate, described catalyst network between described smoke inlet pipe and the first chamber, for making the H in tail gas 2s activates, and described tail gas air inlet pipe is connected with the first chamber by described inlet exhaust gas, and described blender escape pipe is connected with the second chamber by described mixer outlet.
In above-mentioned Non-toxic treating apparatus, preferably, described blender body is the cylindrical of hollow, the internal diameter of described blender body is 1.5 ~ 2: 1 with the ratio of the internal diameter of described smoke inlet pipe, the internal diameter of described smoke inlet pipe and the ratio > 1: 1 of the internal diameter of described tail gas air inlet pipe.
In above-mentioned Non-toxic treating apparatus, preferably, on described orifice plate, the area sum of all through holes is not less than the area (i.e. the cross-sectional area of inlet exhaust gas pipe) of described inlet exhaust gas.
In above-mentioned Non-toxic treating apparatus, preferably, described Non-toxic treating apparatus also comprises the first blower fan and the second blower fan, described first blower fan is connected with described catalyst blender by described smoke inlet pipe, for combustion product gases being blasted in described catalyst blender, described second blower fan is connected with described catalyst blender by described tail gas air inlet pipe, for will containing low concentration H 2the tail gas of S blasts in described catalyst blender; Described Non-toxic treating apparatus is connected with conventional desulfurization units by described blender escape pipe, carries out desulfurization process for being delivered in conventional desulfurization units by the gas after thermal decomposition.
In above-mentioned Non-toxic treating apparatus, preferably, described first blower fan and the second blower fan are corrosive resistant fan.
In the present invention, utilize Non-toxic treatment method and device, to containing low concentration H 2(as the synthesis tail gas that brium carbonate-Production By Sulfuric Acid Process barium sulfate produces, by volume mark meter, containing H for the tail gas of S 2s1% ~ 2%, CO 270%, O 215%, N 27%, other gas about 5%) carry out harmless treatment, then qualified discharge, thus remove H 2to the pollution of air and the murder by poisoning to production scene operating personnel after the diffusion of S gas, reach the requirement of cleaner production.
Due to H in synthesis tail gas 2s content is low, and with a large amount of CO 2mix, cannot process with traditional alkali absorption method, again can not uncontrollable discharge.Present invention employs thermal decomposition absorption method to process, general principle is as shown in the formula shown in (1) and formula (2):
NaOH+SO 2→ Na 2sO 4+ H 2o or Ca (OH) 2+ SO 2→ CaSO 4↓+H 2o (2)
In the present invention, O contained by combustion product gases 2volume fraction usually between 10% ~ 30%, far exceed the low concentration H in tail gas 2s, the temperature of combustion product gases, usually at about 200 DEG C, controls activation temperature by controlling flue gas introduction volume.
In the present invention, the internal diameter of blender escape pipe is usually identical with the internal diameter of smoke inlet pipe, but is not limited to this.
Compared with prior art, the invention has the advantages that:
(1) Non-toxic treatment method of the present invention will containing low concentration H 2the tail gas sealing of S is delivered in catalyst blender, first fully activates with catalyst, then reacts with the useless flue gas from furnace room, make H 2s and O 2there is pyrolysis and generate SO 2with gaseous state H 2o, thus the Non-toxic realizing tail gas.The present invention not only recycling conventional combustion workshop section produce give up flue gas to process the H in tail gas containing oxygen 2s, also effectively make use of the high-temperature residual heat of flue gas further, for reaction provides required activation temperature, and keeps the relative constancy of activation temperature in catalyst blender.Non-toxic treatment method of the present invention effectively can remove the low concentration H contained in tail gas 2s gas, security are high, simple and convenient, effective and stable, have very high industrialized utilization and are worth.
(2) Non-toxic treating apparatus structure of the present invention is simple, with low cost, can process efficiently containing low concentration H 2the tail gas of S.Blender body is divided into the first chamber and the second chamber by orifice plate by device of the present invention, makes H in tail gas 2activation and the pyrolysis of S separate and carry out.By the internal diameter ratio of control smoke inlet pipe with tail gas air inlet pipe, combustion product gases and tail gas is made to produce current difference in the second chamber, thus formation negative pressure, just because of the existence of negative pressure, just make combustion product gases and tail gas to be constantly pressed in the second chamber to react, greatly save energy and cost, and ensure that in catalyst blender, the quick of reaction carries out smoothly.Device of the present invention also carrys out effective control activation temperature by adjusting mixer body and the ratio of the internal diameter of smoke inlet pipe, and reduces by the via area sum of orifice plate being set to be not less than inlet exhaust gas area the resistance that tail gas enters the second chamber.
Accompanying drawing explanation
Fig. 1 be in the embodiment of the present invention containing low concentration H 2the structural representation sketch of the Non-toxic treating apparatus of S tail gas.
Marginal data:
1, smoke inlet pipe; 2, tail gas air inlet pipe; 3, blender escape pipe; 4, blender body; 5, orifice plate; 6, catalyst network; 7, the first chamber; 8, the second chamber; 9, through hole; 10, the first blower fan; 11, the second blower fan; 12, conventional desulfurization units.
Detailed description of the invention
Below in conjunction with Figure of description and concrete preferred embodiment, the invention will be further described, but protection domain not thereby limiting the invention.
Embodiment 1:
A kind of of the present invention containing low concentration H 2the Non-toxic treating apparatus of S tail gas, as shown in Figure 1, comprises catalyst blender, smoke inlet pipe 1 (internal diameter is 300mm), tail gas air inlet pipe 2 and blender escape pipe 3 (internal diameter is 300mm).Catalyst blender comprises blender body 4, orifice plate 5 and catalyst network 6.Orifice plate 5 is arranged in the inner chamber of blender body 4, the inner chamber of blender body 4 is divided into the first chamber 7 and the second chamber 8.Orifice plate 5 is provided with multiple through hole 9 (diameter is 8mm, 6mm ~ 10mm) for the tail gas after activation to be sent to the second chamber 8 from the first chamber 7.One end of blender body 4 is provided with the gas approach be communicated with the first chamber 7, and the side of blender body 4 is provided with the inlet exhaust gas be communicated with the first chamber 7, and the other end of blender body 4 is provided with the mixer outlet be communicated with the second chamber 8.Smoke inlet pipe 1 stretches in the second chamber 8 through gas approach, the first chamber 7 and orifice plate 5.Catalyst network 6 between smoke inlet pipe 1 and the first chamber 7, for making the H in tail gas 2s activates, and tail gas air inlet pipe 2 is connected with the first chamber 7 by inlet exhaust gas, and blender escape pipe 3 is connected with the second chamber 8 by mixer outlet.
This Non-toxic treating apparatus also comprises the first blower fan 10 and the second blower fan 11, first blower fan 10 and the second blower fan 11 and is corrosive resistant fan.First blower fan 10 is connected with catalyst blender by smoke inlet pipe 1, and for being blasted by combustion product gases in catalyst blender, the second blower fan 11 passes through tail gas air inlet pipe 2 and is connected with catalyst blender, for will containing low concentration H 2the tail gas of S blasts in catalyst blender.
This Non-toxic treating apparatus is connected with conventional desulfurization units 12, for carrying out desulfurization process by the mixed gas delivery after thermal decomposition to conventional desulfurization units 12 by blender escape pipe 3.
In the present embodiment, blender body 4 is the cylindrical of hollow, and the internal diameter of blender body 4 is 1.7: 1 with the ratio of the internal diameter of smoke inlet pipe 1, and the internal diameter of smoke inlet pipe 1 is 2: 1 with the ratio of the internal diameter of tail gas air inlet pipe 2, can make to produce negative pressure in the second chamber 8.
In the present embodiment, on orifice plate 5, the area sum of all through holes 9 is not less than the area (i.e. the cross-sectional area of tail gas air inlet pipe 2) of inlet exhaust gas.
A kind of of the present invention containing low concentration H 2the Non-toxic treatment method of S tail gas, adopts the Non-toxic treating apparatus of above-mentioned the present embodiment to operate.Should containing low concentration H 2the tail gas of S is the synthesis tail gas of brium carbonate-Production By Sulfuric Acid Process blanc fixe, by volume mark meter, and this synthesis tail gas is containing H 2s1%, CO 270%, O 215%, N 27%, other gas 7%.This Non-toxic treatment method comprises the following steps:
Will containing low concentration H 2the tail gas of S and combustion product gases are delivered in catalyst blender respectively by the tail gas air inlet pipe 2 of Non-toxic treating apparatus and smoke inlet pipe 1, tail gas first with in catalyst blender first chamber 7 contained by platinum catalyst contacts, make H 2s activates, and activation temperature is 140 DEG C (80 DEG C ~ 140 DEG C), and the tail gas after activation enters in the second chamber 8 of catalyst blender and mixes with combustion product gases, makes the H in tail gas 2o in S and combustion product gases 2there is pyrolysis (still at 140 DEG C), generate SO 2and H 2o, last SO 2, H 2o and remaining tail gas are entered in conventional desulfurization units 12 by mixed gas outlet pipe 3 and carry out desulfurization together with combustion product gases (can be referred to as gaseous mixture), complete Non-toxic process.
In the present embodiment, combustion product gases is the useless flue gas that conventional combustion workshop section produces, and is 20% containing oxygen volume fraction.
Learn after testing (usually using gas analyzer), not containing H in final obtained gaseous mixture 2s, the H namely in synthesis tail gas 2s is all removed, and illustrates thus, and method of the present invention efficiently can remove the low concentration H in tail gas 2s, has very high value.
Of the present invention containing low concentration H 2s tail gas can also produce the adjustment operation tail gas of blanc fixe from grey black-mirabilite method, or for producing the synthesis tail gas of barium nitrate.
The above is only the preferred embodiment of the present invention, and protection scope of the present invention is also not only confined to above-described embodiment.All technical schemes belonged under thinking of the present invention all belong to protection scope of the present invention.It is noted that for those skilled in the art, improvements and modifications under the premise without departing from the principles of the invention, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (9)

1. one kind contains low concentration H 2the Non-toxic treatment method of S tail gas, comprises the following steps: will containing low concentration H 2the tail gas of S and combustion product gases are delivered in the catalyst blender of a Non-toxic treating apparatus, and described tail gas first contacts with catalyst contained in catalyst blender, makes H 2s activates, and activation temperature is 80 DEG C ~ 140 DEG C, and the tail gas after activation mixes with the combustion product gases in catalyst blender again, makes the H in tail gas 2o in S and combustion product gases 2there is pyrolysis, generate SO 2and H 2o, last SO 2, H 2o enters conventional desulfurization treatment process with remaining tail gas together with combustion product gases, completes Non-toxic process, described Non-toxic treating apparatus comprises catalyst blender, smoke inlet pipe (1), tail gas air inlet pipe (2) and blender escape pipe (3), described catalyst blender comprises blender body (4), orifice plate (5) and catalyst network (6), described orifice plate (5) is arranged in the inner chamber of described blender body (4), the inner chamber of blender body (4) is divided into the first chamber (7) and the second chamber (8), described orifice plate (5) is provided with multiple through hole (9) for the tail gas after activation to be sent to the second chamber (8) from the first chamber (7), one end of described blender body (4) is provided with the gas approach be communicated with the first chamber (7), the side of described blender body (4) is provided with the inlet exhaust gas be communicated with the first chamber (7), the other end of described blender body (4) is provided with the mixer outlet be communicated with the second chamber (8), described smoke inlet pipe (1) stretches in the second chamber (8) through described gas approach, the first chamber (7) and orifice plate (5), and described catalyst network (6) is positioned between described smoke inlet pipe (1) and the first chamber (7), for making the H in tail gas 2s activates, and described tail gas air inlet pipe (2) is connected with the first chamber (7) by described inlet exhaust gas, and described blender escape pipe (3) is connected with the second chamber (8) by described mixer outlet.
2. Non-toxic treatment method according to claim 1, is characterized in that, described catalyst is platinum.
3. Non-toxic treatment method according to claim 1 and 2, is characterized in that, described containing low concentration H 2in the tail gas of S, H 2the volume fraction of S is less than 5%; O contained by described combustion product gases 2volume fraction be 10% ~ 30%.
4. Non-toxic treatment method according to claim 1 and 2, is characterized in that, described containing low concentration H 2the tail gas of S is the synthesis tail gas of brium carbonate-Production By Sulfuric Acid Process blanc fixe, or is the adjustment operation tail gas that grey black-mirabilite method produces blanc fixe, or for producing the synthesis tail gas of barium nitrate; Described combustion product gases is the flue gas that conventional combustion workshop section produces.
5. a Non-toxic treatment method according to any one of Claims 1 to 4 use containing low concentration H 2the Non-toxic treating apparatus of S tail gas, is characterized in that, described Non-toxic treating apparatus comprises catalyst blender, smoke inlet pipe (1), tail gas air inlet pipe (2) and blender escape pipe (3), described catalyst blender comprises blender body (4), orifice plate (5) and catalyst network (6), described orifice plate (5) is arranged in the inner chamber of described blender body (4), the inner chamber of blender body (4) is divided into the first chamber (7) and the second chamber (8), described orifice plate (5) is provided with multiple through hole (9) for the tail gas after activation to be sent to the second chamber (8) from the first chamber (7), one end of described blender body (4) is provided with the gas approach be communicated with the first chamber (7), the side of described blender body (4) is provided with the inlet exhaust gas be communicated with the first chamber (7), the other end of described blender body (4) is provided with the mixer outlet be communicated with the second chamber (8), described smoke inlet pipe (1) stretches in the second chamber (8) through described gas approach, the first chamber (7) and orifice plate (5), and described catalyst network (6) is positioned between described smoke inlet pipe (1) and the first chamber (7), for making the H in tail gas 2s activates, and described tail gas air inlet pipe (2) is connected with the first chamber (7) by described inlet exhaust gas, and described blender escape pipe (3) is connected with the second chamber (8) by described mixer outlet.
6. Non-toxic treating apparatus according to claim 5, it is characterized in that, what described blender body (4) was hollow is cylindrical, the ratio of the internal diameter of described blender body (4) and the internal diameter of described smoke inlet pipe (1) is 1.5 ~ 2: 1, the ratio > 1: 1 of the internal diameter of described smoke inlet pipe (1) and the internal diameter of described tail gas air inlet pipe (2).
7. the Non-toxic treating apparatus according to claim 5 or 6, is characterized in that, the area sum of the upper all through holes (9) of described orifice plate (5) is not less than the area of described inlet exhaust gas.
8. the Non-toxic treating apparatus according to claim 5 or 6, it is characterized in that, described Non-toxic treating apparatus also comprises the first blower fan (10) and the second blower fan (11), described first blower fan (10) is connected with described catalyst blender by described smoke inlet pipe (1), for combustion product gases being blasted in described catalyst blender, described second blower fan (11) is connected with described catalyst blender by described tail gas air inlet pipe (2), for will containing low concentration H 2the tail gas of S blasts in described catalyst blender; Described Non-toxic treating apparatus is connected with conventional desulfurization units (12) by described blender escape pipe (3), carries out desulfurization process for being delivered in conventional desulfurization units (12) by the gas after thermal decomposition.
9. Non-toxic treating apparatus according to claim 8, is characterized in that, described first blower fan (10) and the second blower fan (11) are corrosive resistant fan.
CN201410355416.5A 2014-07-24 2014-07-24 Containing low concentration H 2the Non-toxic treatment method of S tail gas and device Expired - Fee Related CN104084039B (en)

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