CN104307360A - Gas-phase desulfurization oxidant and application thereof as well as method for removing hydrogen sulfide - Google Patents
Gas-phase desulfurization oxidant and application thereof as well as method for removing hydrogen sulfide Download PDFInfo
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- CN104307360A CN104307360A CN201410584564.4A CN201410584564A CN104307360A CN 104307360 A CN104307360 A CN 104307360A CN 201410584564 A CN201410584564 A CN 201410584564A CN 104307360 A CN104307360 A CN 104307360A
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Abstract
本发明公开了一种气相脱硫氧化剂及其应用和脱除硫化氢的方法，气相脱硫氧化剂包括浓度为10～150ppm的氯气、浓度为10～200ppm二氧化氮、浓度为20～300ppm二氧化硫、浓度为10～100ppm三氧化硫。脱除硫化氢的方法包括以下步骤：（1）将气相脱硫氧化剂与含硫化氢的臭气混合形成混合气，该混合气的浓度为50～500ppm；（2）将混合气通入反应器中，所述混合气流过反应器中的催化剂床层，硫化氢与气相脱硫氧化剂发生催化氧化反应，混合气中的硫化氢组分被氧化成单质硫析出。本发明气相脱硫氧化剂中的各组分均为气体氧化剂，在催化剂的作用下与硫化氢气体发生催化氧化反应，可以实现无液相吸收的气相干式脱硫。The invention discloses a gas-phase desulfurization oxidant and its application and a method for removing hydrogen sulfide. The gas-phase desulfurization oxidant includes chlorine gas with a concentration of 10-150 ppm, nitrogen dioxide with a concentration of 10-200 ppm, sulfur dioxide with a concentration of 20-300 ppm, and a concentration of 10-100ppm sulfur trioxide. The method for removing hydrogen sulfide includes the following steps: (1) Mixing the gas phase desulfurization oxidant and the odor containing hydrogen sulfide to form a mixed gas, the concentration of the mixed gas is 50-500ppm; (2) passing the mixed gas into the reactor , the mixed gas flows through the catalyst bed in the reactor, the hydrogen sulfide and the gas phase desulfurization oxidant undergo a catalytic oxidation reaction, and the hydrogen sulfide component in the mixed gas is oxidized into elemental sulfur and precipitated. Each component in the gas-phase desulfurization oxidant of the present invention is a gas oxidant, which undergoes a catalytic oxidation reaction with hydrogen sulfide gas under the action of a catalyst, and can realize gas-phase dry desulfurization without liquid phase absorption.
Description
Technical field
The present invention relates to a kind of gas phase desulfurization oxidant and application thereof and remove the method for hydrogen sulfide, can be used for dry type and remove containing the hydrogen sulfide in hydrogen sulfide gas, belong to technical field of desulfuration purification.
Background technology
In technical field of desulfuration purification, when removing containing hydrogen sulfide in hydrogen sulfide gas, prior art often adopts wet type desulfurizing technology, namely adopts the alkaline absorption solution containing liquid-phase catalyst to carry out absorbing hydrogen sulphide and be oxidized to elemental sulfur to be reclaimed.The feature of this wet type desulfurizing technology is that desulfuration efficiency is high, the purification requirement to high-concentration hydrogen sulfide can be met, be used for the gas higher to concentration of hydrogen sulfide and carry out desulfurizing and purifying, the unstripped gas desulfurization application therefore in the fields such as natural gas, chemical industry, combustion gas is more.For the gas of low in hydrogen sulphide content, the foul smell etc. that such as cesspool sealing is collected, the purification method adopted at present mostly is alkali liquor absorption, but can brine waste be formed like this, can discharge after needing purification, cause the consumption of water not to the utmost, also can increase the operating load of water processing establishment.
Summary of the invention
The object of the present invention is to provide a kind of gas phase desulfurization oxidant, the gas phase dry type desulfurizing without liquid phase scrubbing can be realized, to solve the technical problem that existing wet absorption doctor treatment easily forms brine waste.Meanwhile, the present invention also provides a kind of application of above-mentioned gas phase desulfurization oxidant and a kind of method utilizing above-mentioned gas phase desulfurization oxidant removal hydrogen sulfide.
A kind of gas phase desulfurization oxidant of the present invention adopts following technical scheme: a kind of gas phase desulfurization oxidant, it comprises chlorine, nitrogen dioxide, sulfur dioxide, sulfur trioxide all in gaseous state, wherein the concentration of chlorine is 10 ~ 150ppm(volume ratio), the concentration of nitrogen dioxide is 10 ~ 200ppm(volume ratio), the concentration of sulfur dioxide is 20 ~ 300ppm(volume ratio), the concentration of sulfur trioxide is 10 ~ 100ppm(volume ratio).
The application of a kind of gas phase desulfurization oxidant of the present invention adopts following technical scheme: described gas phase desulfurization oxidant is for removing the hydrogen sulfide in H 2 S-containing gas.
A kind of method of above-mentioned gas phase desulfurization oxidant removal hydrogen sulfide that utilizes of the present invention adopts following technical scheme: the method utilizing above-mentioned gas phase desulfurization oxidant removal hydrogen sulfide, it comprises the following steps: described gas phase desulfurization oxidant and hydrogen sulfide containing foul smell are mixed to form gaseous mixture by (1), and the concentration of this gaseous mixture is 50 ~ 500ppm(volume ratio); (2) pass in reactor by described gaseous mixture, described gaseous mixture flows through the beds in reactor, hydrogen sulfide and gas phase desulfurization oxidant generation catalytic oxidation, and the 2 S component in gaseous mixture is oxidized to elemental sulfur and separates out.
The temperature range of described hydrogen sulfide and gas phase desulfurization oxidant generation catalytic oxidation is 20 ~ 250 DEG C.
The catalyst adopted in described catalytic oxidation comprises nickel, manganese, iron, one or more metal oxides of cobalt or the beaded catalyst of composite oxides.
The invention has the beneficial effects as follows: the present invention utilizes the hydrogen sulfide in gas phase desulfurization oxidant removal H 2 S-containing gas, each component in gas phase desulfurization oxidant is gaseous oxidant, with hydrogen sulfide gas generation catalytic oxidation under the effect of catalyst, the gas phase dry type desulfurizing without liquid phase scrubbing can be realized, solve the technical problem that prior art wet absorption doctor treatment forms brine waste, therefore just there is not the consumption of water and the problem to increase water processing establishment load.And the component in gas phase desulfurization oxidant much comes from the waste gas produced in burning or industrial production, can realize the effect of the treatment of wastes with processes of wastes against one another.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in detail.
Embodiment 1:
In the gas phase desulfurization oxidant of the present embodiment, chlorine gas concentration is 15ppm(volume ratio), nitrogen dioxide 20ppm(volume ratio), sulfur dioxide 30ppm(volume ratio), sulfur trioxide concentration 10ppm(volume ratio), in the sulfur-bearing foul smell of required desulfurization, concentration of hydrogen sulfide is 50ppm(volume ratio).
Utilize the method for above-mentioned gas phase desulfurization oxidant removal hydrogen sulfide, comprise the following steps: gas phase desulfurization oxidant is injected in hydrogen sulfide containing foul smell and is mixed to form gaseous mixture by (1); (2) pass in reactor by gaseous mixture, described gaseous mixture flows through the beds in reactor, and catalyst adopts nickel oxide-manganese oxide particle catalyst, and catalytic bed air speed is 1000h
-1, reaction bed temperature is 150 DEG C, hydrogen sulfide and gas phase desulfurization oxidant generation catalytic oxidation, and the 2 S component in gaseous mixture is oxidized to elemental sulfur and separates out, thus reaches desulfurized effect.Finally, test the purification efficiency recording hydrogen sulfide and reach 85%.
Embodiment 2:
In the gas phase desulfurization oxidant of the present embodiment, chlorine gas concentration is 50ppm(volume ratio), nitrogen dioxide 100ppm(volume ratio), sulfur dioxide 200ppm(volume ratio), sulfur trioxide concentration 50ppm(volume ratio), in the sulfur-bearing foul smell of required desulfurization, concentration of hydrogen sulfide is 200ppm(volume ratio).
Utilize the method for above-mentioned gas phase desulfurization oxidant removal hydrogen sulfide, comprise the following steps: gas phase desulfurization oxidant is injected in hydrogen sulfide containing foul smell and is mixed to form gaseous mixture by (1); (2) pass in reactor by gaseous mixture, described gaseous mixture flows through the beds in reactor, and catalyst adopts nickel oxide-cobalt oxide particle catalyst, and catalytic bed air speed is 1000h
-1, reaction bed temperature is 200 DEG C, hydrogen sulfide and gas phase desulfurization oxidant generation catalytic oxidation, and the 2 S component in gaseous mixture is oxidized to elemental sulfur and separates out, thus reaches desulfurized effect.Finally, test the purification efficiency recording hydrogen sulfide and reach 92%.
Embodiment 3:
In the gas phase desulfurization oxidant of the present embodiment, chlorine gas concentration is 80ppm(volume ratio), nitrogen dioxide 200ppm(volume ratio), sulfur dioxide 300ppm(volume ratio), sulfur trioxide concentration 60ppm(volume ratio), in the sulfur-bearing foul smell of required desulfurization, concentration of hydrogen sulfide is 500ppm(volume ratio).
Utilize the method for above-mentioned gas phase desulfurization oxidant removal hydrogen sulfide, comprise the following steps: gas phase desulfurization oxidant is injected in hydrogen sulfide containing foul smell and is mixed to form gaseous mixture by (1); (2) pass in reactor by gaseous mixture, described gaseous mixture flows through the beds in reactor, and catalyst adopts nickel oxide-cobalt oxide-manganese oxide particle catalyst, and catalytic bed air speed is 1000h
-1, reaction bed temperature is 250 DEG C, hydrogen sulfide and gas phase desulfurization oxidant generation catalytic oxidation, and the 2 S component in gaseous mixture is oxidized to elemental sulfur and separates out, thus reaches desulfurized effect.Finally, test the purification efficiency recording hydrogen sulfide and reach 96%.
Embodiment 4:
In the gas phase desulfurization oxidant of the present embodiment, chlorine gas concentration is 10ppm(volume ratio), nitrogen dioxide 10ppm(volume ratio), sulfur dioxide 80ppm(volume ratio), sulfur trioxide concentration 30ppm(volume ratio), in the sulfur-bearing foul smell of required desulfurization, concentration of hydrogen sulfide is 100ppm(volume ratio).
Utilize the method for above-mentioned gas phase desulfurization oxidant removal hydrogen sulfide, comprise the following steps: gas phase desulfurization oxidant is injected to hydrogen sulfide containing foul smell and is mixed to form gaseous mixture by (1); (2) pass in reactor by gaseous mixture, described gaseous mixture flows through the beds in reactor, and catalyst adopts nickel oxide-manganese oxide particle catalyst, and catalytic bed air speed is 1000h
-1, reaction bed temperature is 250 DEG C, hydrogen sulfide and gas phase desulfurization oxidant generation catalytic oxidation, and the 2 S component in gaseous mixture is oxidized to elemental sulfur and separates out, thus reaches desulfurized effect.Finally, test the purification efficiency recording hydrogen sulfide and reach 83%.
Embodiment 5:
In the gas phase desulfurization oxidant of the present embodiment, chlorine gas concentration is 150ppm(volume ratio), nitrogen dioxide 60ppm(volume ratio), sulfur dioxide 120ppm(volume ratio), sulfur trioxide concentration 100ppm(volume ratio), in the sulfur-bearing foul smell of required desulfurization, concentration of hydrogen sulfide is 400ppm(volume ratio).
Utilize the method for above-mentioned gas phase desulfurization oxidant removal hydrogen sulfide, comprise the following steps: gas phase desulfurization oxidant is injected to hydrogen sulfide containing foul smell and is mixed to form gaseous mixture by (1); (2) pass in reactor by gaseous mixture, described gaseous mixture flows through the beds in reactor, and catalyst adopts cobalt oxide-manganese oxide particle catalyst, and catalytic bed air speed is 1000h
-1, reaction bed temperature is 250 DEG C, hydrogen sulfide and gas phase desulfurization oxidant generation catalytic oxidation, and the 2 S component in gaseous mixture is oxidized to elemental sulfur and separates out, thus reaches desulfurized effect.Finally, test the purification efficiency recording hydrogen sulfide and reach 94%.
Embodiment 6:
In the gas phase desulfurization oxidant of the present embodiment, chlorine gas concentration is 10ppm(volume ratio), nitrogen dioxide 20ppm(volume ratio), sulfur dioxide 20ppm(volume ratio), sulfur trioxide concentration 20ppm(volume ratio), in the sulfur-bearing foul smell of required desulfurization, concentration of hydrogen sulfide is 60ppm(volume ratio).
Utilize the method for above-mentioned gas phase desulfurization oxidant removal hydrogen sulfide, comprise the following steps: gas phase desulfurization oxidant is injected to hydrogen sulfide containing foul smell and is mixed to form gaseous mixture by (1); (2) pass in reactor by gaseous mixture, described gaseous mixture flows through the beds in reactor, and catalyst adopts cobalt oxide-manganese oxide particle catalyst, and catalytic bed air speed is 800h
-1, reaction bed temperature is 250 DEG C, hydrogen sulfide and gas phase desulfurization oxidant generation catalytic oxidation, and the 2 S component in gaseous mixture is oxidized to elemental sulfur and separates out, thus reaches desulfurized effect.Finally, test the purification efficiency recording hydrogen sulfide and reach 80%.
The present invention utilizes the hydrogen sulfide in gas phase desulfurization oxidant removal H 2 S-containing gas, each component in gas phase desulfurization oxidant is gaseous oxidant, with hydrogen sulfide gas generation catalytic oxidation under the effect of catalyst, the gas phase dry type desulfurizing without liquid phase scrubbing can be realized, solve the technical problem that prior art wet absorption doctor treatment forms brine waste, therefore just there is not the consumption of water and the problem to increase water processing establishment load.And the component in gas phase desulfurization oxidant much comes from the waste gas produced in burning or industrial production, can realize the effect of the treatment of wastes with processes of wastes against one another.
In other embodiments of the invention, in gas phase desulfurization oxidant, the concentration of chlorine can be 10 ~ 150ppm(volume ratio) between an arbitrary value, the concentration of nitrogen dioxide can be 10 ~ 200ppm(volume ratio) between an arbitrary value, the concentration of sulfur dioxide can be 20 ~ 300ppm(volume ratio) between an arbitrary value, the concentration of sulfur trioxide can be 10 ~ 100ppm(volume ratio) between an arbitrary value.
Claims (5)
1. a gas phase desulfurization oxidant, it is characterized in that: it comprises chlorine, nitrogen dioxide, sulfur dioxide, sulfur trioxide all in gaseous state, wherein the concentration of chlorine is 10 ~ 150ppm(volume ratio), the concentration of nitrogen dioxide is 10 ~ 200ppm(volume ratio), the concentration of sulfur dioxide is 20 ~ 300ppm(volume ratio), the concentration of sulfur trioxide is 10 ~ 100ppm(volume ratio).
2. the application of gas phase desulfurization oxidant according to claim 1, is characterized in that: described gas phase desulfurization oxidant is for removing the hydrogen sulfide in H 2 S-containing gas.
3. the method for gas phase desulfurization oxidant removal hydrogen sulfide according to claim 1, it is characterized in that: it comprises the following steps: described gas phase desulfurization oxidant and hydrogen sulfide containing foul smell are mixed to form gaseous mixture by (1), the concentration of this gaseous mixture is 50 ~ 500ppm(volume ratio); (2) pass in reactor by described gaseous mixture, described gaseous mixture flows through the beds in reactor, hydrogen sulfide and gas phase desulfurization oxidant generation catalytic oxidation, and the 2 S component in gaseous mixture is oxidized to elemental sulfur and separates out.
4. the method for gas phase desulfurization oxidant removal hydrogen sulfide according to claim 3, is characterized in that: the temperature range of described hydrogen sulfide and gas phase desulfurization oxidant generation catalytic oxidation is 20 ~ 250 DEG C.
5. the method for the gas phase desulfurization oxidant removal hydrogen sulfide according to claim 3 or 4, is characterized in that: the catalyst adopted in described catalytic oxidation comprises nickel, manganese, iron, one or more metal oxides of cobalt or the beaded catalyst of composite oxides.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111545050A (en) * | 2020-04-29 | 2020-08-18 | 江苏卓高环保科技有限公司 | Catalytic adsorption and decomposition hydrogen sulfide composite material and wall-mounted deodorization purifier prepared from same |
| CN113209816A (en) * | 2020-01-21 | 2021-08-06 | 中国石油化工股份有限公司 | Catalyst grading method for catalytic oxidation of sulfur-containing VOCs and method for catalytic oxidation of sulfur-containing VOCs |
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Cited By (2)
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| CN113209816A (en) * | 2020-01-21 | 2021-08-06 | 中国石油化工股份有限公司 | Catalyst grading method for catalytic oxidation of sulfur-containing VOCs and method for catalytic oxidation of sulfur-containing VOCs |
| CN111545050A (en) * | 2020-04-29 | 2020-08-18 | 江苏卓高环保科技有限公司 | Catalytic adsorption and decomposition hydrogen sulfide composite material and wall-mounted deodorization purifier prepared from same |
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