BLUER-PRO工藝

技術(shù)來源

　　BLUER-PRO硫磺回收技術(shù)屬于螯合鐵濕式氧化法脫硫工藝，國外同類技術(shù)為美國Merichem公司的LO-CAT技術(shù)。LO-CAT技術(shù)是于上世紀(jì)70年代開發(fā)出的專利硫化氫回收技術(shù)，經(jīng)過四十多年的發(fā)展，已經(jīng)成為應(yīng)用最多的螯合鐵濕式氧化法脫硫工藝，目前全球已經(jīng)建設(shè)有200多套LO-CAT裝置，應(yīng)用領(lǐng)域涵蓋天然氣開采、石油提煉、生物氣處理、垃圾填埋沼氣處理、煉焦、地?zé)釟怏w發(fā)電、飲料業(yè)CO2氣體生產(chǎn)、潤滑油生產(chǎn)等，是一種非?？煽康牧蚧腔厥占夹g(shù)。

　　煙臺(tái)新瑞環(huán)?？萍加邢薰驹缙诓捎昧擞赏鈬咎峁┕に囋O(shè)計(jì)包，自已承擔(dān)基礎(chǔ)工程設(shè)計(jì)和詳細(xì)工程設(shè)計(jì)的合作方式，并結(jié)合工程建設(shè)和生產(chǎn)實(shí)際，不斷總結(jié)經(jīng)驗(yàn)，通過數(shù)套裝置的設(shè)計(jì)，已經(jīng)掌握了LO-CAT硫磺回收全套裝置的設(shè)計(jì)技術(shù)，開發(fā)研究出了XR-SR系列螯合鐵脫硫溶劑，其主要由鐵離子濃縮劑、螯合劑、表面活性劑、殺菌劑、消泡劑、初始劑等組成。形成了有自己特色的BLUER-PRO硫磺回收技術(shù)，打破了LO-CAT工藝和催化劑依靠國外引進(jìn)的格局。

BLUER-PRO process

Technical source

BLUER-PRO sulfur recovery technology belongs to the wet oxidation desulfurization process of chelated iron, and the foreign similar technology is LO-CAT technology of Merichem company in the United States. LO-CAT technology is a patented hydrogen sulfide recovery technology developed in the 1970s. After more than 40 years of development, it has become the most widely used wet oxidation desulfurization process of chelated iron. At present, more than 200 sets of LO-CAT devices have been built around the world. Application fields cover natural gas extraction, petroleum refining, biogas treatment, landfill biogas treatment, coking, geothermal gas power generation, beverage industry CO2 gas production, lubricant production, etc., is a very reliable sulfur recovery technologies.

 

Early on, Yantai Sunrise Environmental Protection Technology Co., Ltd. adopted the cooperation mode of providing process design packages by foreign companies and undertaking basic engineering design and detailed engineering design by itself. Combined with the actual construction and production of engineering, it constantly summarized experience. XR-SR series of chelated iron desulphurization solvent was developed, which mainly consists of an iron ion concentration agent, chelating agent, surfactant, bactericide, defoamer, initial agent, etc. BLUER-PRO sulfur recovery technology with its characteristics has been formed, breaking the pattern of the LO-CAT process and catalyst relying on foreign introduction.

工藝原理

BLUER-PRO的基本反應(yīng)過程可以分為吸收與再生兩個(gè)階段

Principle of technology

The basic reaction process of BLUER-PRO can be divided into two stages: Absorption and regeneration

吸收反應(yīng)：Absorption reaction:

H2S(氣體)+2Fe3+→2H++S°+2Fe2+

再生反應(yīng)：Regeneration reaction:

1/2 O2(氣體)+H2O+2Fe2+→2OH-+2Fe3+

總反應(yīng)：Total Response:

H2S+1/2O2→H2O+S°

　　這一反應(yīng)發(fā)生于水基溶液中，所用水基溶液中的金屬離子能夠清除硫化物離子（S2-）的電子（負(fù)電荷），使之轉(zhuǎn)變成元素硫。此外，在再生過程中，該金屬能夠?qū)⒎@的電子轉(zhuǎn)移給氧（O2），使自己重新恢復(fù)到原來的金屬離子狀態(tài)。雖然具備這種功能的金屬有許多種，但是BLUER-PRO處理工藝技術(shù)選擇了鐵（Fe），因?yàn)殍F無毒而且活性好，轉(zhuǎn)化效率高。

This reaction occurs in a water-based solution where metal ions are able to remove the electrons (negative charge) of the sulfide ion (S2-) and convert it into elemental sulfur. In addition, during the regeneration process, the metal is able to transfer the captured electrons to oxygen (O2), returning itself to its original metal ion state. Although there are many kinds of metals with this function, the BLUER-PRO process technology chose iron (Fe) because iron is non-toxic and has good activity and high conversion efficiency.

工藝

工藝過程

BLUER-PRO工藝分為常規(guī)工藝和自循環(huán)工藝兩種

（1）常規(guī)BLUER-PRO

　　在處理易燃?xì)怏w或其它有用的氣體產(chǎn)物時(shí)，BLUER-PRO系統(tǒng)設(shè)有單獨(dú)的吸收器和氧化器，BLUER-PRO的螯合鐵催化劑泵入兩容器間。吸收器把H2S從含硫氣體中分離出來并轉(zhuǎn)化成單質(zhì)硫。氧化器則可恢復(fù)鐵催化劑。將脫硫和再生分別各在二個(gè)塔中進(jìn)行，故稱雙塔流程。

BLUER-PRO常規(guī)流程

常規(guī)流程H2S的吸收和氧化再生分別在吸收塔和氧化塔兩個(gè)塔中進(jìn)行。

吸收塔：

H2S(氣體)+2Fe3+→2H++S°+2Fe2+

氧化塔：

1/2 O2(氣體)+H2O+2Fe2+→2OH-+2Fe3+

Technology

Technological process

The BLUER-PRO process is divided into two types: conventional process and self-recycling process

(1) Regular BLUER-PRO

When dealing with flammable gases or other useful gas products, the BLUER-PRO system has a separate absorber and oxidizer, and BLUER-PRO's chelated iron catalyst is pumped between the two containers. The absorber separates H2S from the sulfur-containing gas and converts it into elemental sulfur. The oxidizer recovers the iron catalyst. The desulfurization and regeneration are carried out in two towers respectively, so it is called the two-tower process.

BLUER-PRO routine process

The conventional process of H2S absorption and oxidation regeneration is carried out in the absorption tower and the oxidation tower respectively.

Absorption tower:

H2S (gas) +2Fe3+→2H++S°+2Fe2+

Oxidation tower：

H2S (gas) +2Fe3+→2H++S°+2Fe2+

（2）自循環(huán)BLUER-PRO

　　在處理胺酸氣體及其它非易燃低壓氣體時(shí)可以使用專利系統(tǒng)自循環(huán)。在該系統(tǒng)中，吸收器和氧化器被整合為一個(gè)裝置，從而減少一個(gè)容器，省去了溶液循環(huán)泵以及相關(guān)的管道等裝置。

BLUER-PRO自循環(huán)工藝

吸收區(qū)反應(yīng)：

H2S(氣體)+2Fe3+→2H++S°+2Fe2+

氧化區(qū)反應(yīng)：

1/2 O2(氣體)+H2O+2Fe2+→2OH-+2Fe3+

BLUER-PRO硫磺回收工藝其反應(yīng)器結(jié)構(gòu)包含常規(guī)的四種或由這四種結(jié)合的結(jié)構(gòu)，為鼓泡、移動(dòng)床、靜態(tài)混合、文丘里四種，目前國內(nèi)也有使用填料的結(jié)構(gòu)方式。

(2) Self-circulating BLUER-PRO

The patented system can be used for self-circulation when dealing with amine gases and other non-flammable low pressure gases. In this system, the absorber and oxidizer are integrated into one unit, thereby eliminating one container and eliminating the need for solution circulation pumps and associated piping.

BLUER-PRO self-recycling process

Absorption zone reaction:

H2S(gas)+2Fe3+→2H++S°+2Fe2+

Oxidation zone reaction:

1/2 O2(gas)+H2O+2Fe2+→2OH-+2Fe3+

The reactor structure of BLUER-PRO sulfur recovery process contains four conventional or a combination of these four structures, which are bubbling, moving bed, static mixing and venturi. At present, there are also structural ways of using fillers in China.

 

工藝特點(diǎn)

BLUER-PRO工藝適用于0.2-20t/d的硫磺回收裝置，是中小規(guī)模硫磺回收工藝技術(shù)的世界領(lǐng)先者。主要工藝特點(diǎn)如下：

（1）硫化氫脫除率高，一步反應(yīng)的脫除率達(dá)到99.99%以上，處理過的尾氣H2S濃度在1ppm以下。

（2）應(yīng)用范圍廣，可以處理各種含H2S氣體，選擇性高。

（3）操作彈性大，能夠適應(yīng)原料氣中H2S濃度、原料氣流量從0-100%的大幅度波動(dòng)變化。

（4）環(huán)境友好，沒有三廢產(chǎn)生。

（5）反應(yīng)條件溫和，為液相、常溫常壓反應(yīng)過程。

（6）工藝簡單，開、停工及日常操作均簡單。

（7）經(jīng)濟(jì)性能高，占地面積小，投資費(fèi)用少，日常運(yùn)行成本低。

（8）安全性能高，系統(tǒng)不使用任何有毒的化學(xué)物質(zhì)，硫磺產(chǎn)品中沒有H2S氣體。

（9）運(yùn)行可靠，獨(dú)特的設(shè)計(jì)能夠保證無堵塞現(xiàn)象發(fā)生，保證長周期穩(wěn)定運(yùn)行。

與克勞斯工藝比較

與當(dāng)前國內(nèi)成熟應(yīng)用的克勞斯干法脫硫回收技術(shù)比較:

Process characteristics

The BLUER-PRO process is suitable for 0.2-20 t/d sulfur recovery plants and is the world leader in small and medium-scale sulfur recovery process technology. The main process features are as follows:

(1) The removal rate of hydrogen sulfide is high, the removal rate of one-step reaction is more than 99.99%, and the H2S concentration of the treated tail gas is below 1ppm.

(2) Wide range of applications, can deal with a variety of H2S gases, high selectivity.

(3) Operation flexibility, can adapt to the H2S concentration in raw gas, raw gas flow from 0-100% fluctuations.

(4) Environmentally friendly, no three wastes produced.

(5) The reaction conditions are mild, and the reaction process is a liquid phase, normal temperature, and atmospheric pressure.

(6) The process is simple, the opening, shutdown, and daily operation are simple.

(7) High economic performance, small footprint, less investment costs, and low daily operating costs.

(8) High safety performance, the system does not use any toxic chemicals, and there is no H2S gas in sulfur products.

(9) Reliable operation, unique design can ensure that no blockage occurs, to ensure long-term stable operation.

Comparison with Krauss process

Compared with the current domestic mature application of Klaus dry desulfurization recovery technology:

比較項(xiàng)目	XR-999	克勞斯/CLAUS
適用的處理負(fù)荷	70-7500噸/年	7000噸/年以上
適用進(jìn)料氣體	各種氣體，包括克勞斯尾氣	酸性氣，但處理酸性水汽提出來的酸性氣很困難
最小處理負(fù)荷 噸/天	0	20
進(jìn)料中H2S含量	0-100%	40%以上
硫磺脫出率	99.99%以上，尾氣H2S含量低于1PPM	95-96%
工藝過程和處理效果	工藝簡單，一步轉(zhuǎn)化過程達(dá)到要求處理結(jié)果	包括酸性氣灼燒、兩段固定床反應(yīng)器，尾氣需要在焚燒后排放，為保證脫硫效果，還要增設(shè) 尾氣處理裝置
開工率	100%	小硫磺開工率非常低
操作條件	常溫	在高溫下操作
操作性能	沒有任何操作問題，可以保持長周期穩(wěn)定運(yùn)行	對(duì)于7000噸/年以下的裝置極易造成頻繁阻塞和停工
產(chǎn)品硫磺	固體	氣體/液體，含有h2S氣體

Comparison item	XR-999	CLAUS
Applicable processing load	70-7500 tons per year	7000 tons/year or more
Applicable feed gas	All kinds of gases	Acid gas, but it is difficult to deal with acid gas from acidic water vapor
Minimum handling load tons/day	0	20
H2S content in fee	0-100%	More than 40%
Sulfur extraction rate	Above 99.99%, H2S content of exhaust gas is less than 1PPM	95-96%
Process and treatment effect	The process is simple, one step conversion process to achieve the required processing results	Including acid gas burning, two-stage fixed bed reactor, the tail gas needs to be discharged after incineration, in order to ensure the desulfurization effect, but also add the tail gas treatment device
Rate of operation	100%	Small sulfur operation rate is very low
Operating condition	Normal temperature	Operate at high temperatures
Operating performance	Without any operational problems, it can maintain a long period of stable operation	For units under 7,000 tons/year, it is very easy to cause frequent blocking and downtime
Product sulfur	solidity	Gas/liquid, combined with H2S gas

適用范圍

Scope of application

　　BLUER-PRO硫化氫氣體處理工藝廣泛應(yīng)用于石油提煉、天然氣開采、地?zé)釟怏w發(fā)電、生物氣處理、垃圾填埋沼氣處理、飲料業(yè)二氧化碳?xì)怏w生產(chǎn)、潤滑油生產(chǎn)等行業(yè)。對(duì)生產(chǎn)過程中產(chǎn)生的含硫化氫氣體幾乎可以完全回收，達(dá)到真正意義上的節(jié)能減排效果。

BLUER-PRO hydrogen sulfide gas treatment process is widely used in oil refining, natural gas exploitation, geothermal gas power generation, biogas treatment, landfill biogas treatment, beverage industry carbon dioxide gas production, lubricant production, and other industries. The hydrogen sulfide gas produced in the production process can be almost completely recovered, to achieve the real sense of energy saving and emission reduction effect.

　　在這些工業(yè)生產(chǎn)中，需處理的氣體流量從幾個(gè)立方米每小時(shí)到上萬個(gè)立方米每小時(shí)，氣體H2S濃度從100ppm到100%，氣壓從50KPa到4.5MPa，每天產(chǎn)生的硫從0.2噸到20多噸。

In this industrial production, the gas flow to be treated ranges from a few cubic meters per hour to tens of thousands of cubic meters per hour, the gas H2S concentration ranges from 100ppm to 100%, the air pressure ranges from 50KPa to 4.5MPa, and the sulfur produced per day ranges from 0.2 tons to more than 20 tons.