1.活性焦一體化脫硫脫硝工藝
1. activated coke integrated desulfurization and Denitration Process
1.該工藝脫硫效率高，同時具有除塵效果，由于不加入其他輔助原料，因此無其他廢水、廢渣的產(chǎn)生，不造成二次污染。
1. the process has high desulfurization efficiency and dust removal effect. Since no other auxiliary raw materials are added, no other wastewater and waste residue are generated and no secondary pollution is caused.
2.由于活性焦良好的吸附性能，可協(xié)同處置氟化物、二噁英等其他污染物。利用活性焦的過濾集塵功能和吸附性能，使煙氣中附著于煙塵上的二噁英、氟化物以及其他污染物質(zhì)在吸附塔內(nèi)被活性焦的過濾集塵功能捕集，而氣態(tài)的二噁英等污染物被吸附。由于活性焦在解吸過程中需要被加熱到 400 ℃以上，二噁英在苯環(huán)間的氧基在活性焦催化作用下被裂解，使得煙氣中的二噁英被去除。
2. due to the good adsorption performance of activated coke, it can coordinate the disposal of fluoride, dioxin and other pollutants. By using the filtration and dust collection function and adsorption performance of activated coke, dioxins, fluorides and other pollutants attached to the smoke in the flue gas are collected by the filtration and dust collection function of activated coke in the adsorption tower, while gaseous dioxins and other pollutants are adsorbed. As the activated coke needs to be heated to above 400 ℃ in the desorption process, the oxygen group between the benzene rings of dioxins is cracked under the catalysis of activated coke, so that the dioxins in the flue gas are removed.
3.燒結(jié)生產(chǎn)過程中由于工況不同、原料的不同會導(dǎo)致煙氣量、溫度以及 SO2體積分數(shù)波動較大，而活性焦脫硫脫硝工藝對煙氣的變化具有較強的適應(yīng)性。
3. in the sintering production process, the flue gas volume, temperature and SO2 volume fraction will fluctuate greatly due to different working conditions and raw materials, while the activated coke desulfurization and denitration process has strong adaptability to the change of flue gas.
4.資源回收。活性焦通過再生系統(tǒng)，可將吸附的SO2析出，送制酸系統(tǒng)制成濃硫酸，實現(xiàn)資源的回收利用。
4. resource recovery. The activated coke can separate the adsorbed SO2 through the regeneration system and send it to the acid making system to make concentrated sulfuric acid, so as to realize the recycling of resources.
5.該工藝對燒結(jié)生產(chǎn)系統(tǒng)影響較小，且脫硝反應(yīng)溫度在 130 ℃左右，因此不需要對燒結(jié)煙氣進行加熱。燒結(jié)煙氣中含有大量 SO2等酸性氣體，對設(shè)備的腐蝕要求較高，活性焦吸附系統(tǒng)抗腐蝕能力較強，因此系統(tǒng)運行穩(wěn)定。
5. the process has little impact on the sintering production system, and the denitration reaction temperature is about 130 ℃, so it is not necessary to heat the sintering flue gas. The sintering flue gas contains a large amount of SO2 and other acid gases, which has high requirements for equipment corrosion. The active coke adsorption system has strong corrosion resistance, so the system operates stably.
6.活性焦脫硫脫硝系統(tǒng)一次性投資較高，且由于需要不斷補充活性焦，運行成本較高。
6. the activated coke desulfurization and denitration system has a high one-time investment, and the operation cost is high due to the need to continuously supplement the activated coke.
2.循環(huán)流化床半干法脫硫 +SCR 脫硝組合工藝 循環(huán)流化床半干法脫硫+SCR 脫硝組合工藝具有以下特點：
2. circulating fluidized bed semi dry desulfurization +scr denitration combined process circulating fluidized bed semi dry desulfurization +scr denitration combined process has the following characteristics:
1.煙氣循環(huán)流化床法脫硫效率高，對含 SO2體積分數(shù)較高的煙氣也有很好的脫硫效果。
1. the flue gas circulating fluidized bed method has high desulfurization efficiency and good desulfurization effect for flue gas with high SO2 volume fraction.
2.采用石灰為脫硫劑，分布廣泛，且脫硫劑消耗量小。
2. lime is used as desulfurizer, which is widely distributed and consumes little desulfurizer.
3.一次性投資成本較低，且運行費用較低。
3. the one-time investment cost is low and the operation cost is low.
4.SCR 法在運行一段時間后，催化劑需要更換，更換的廢催化劑為危險固廢，應(yīng)加強管理。
4. After the SCR method has been operated for a period of time, the catalyst needs to be replaced. The replaced waste catalyst is hazardous solid waste, and management should be strengthened.
3.濕法脫硫 +SCR 脫硝組合工藝 濕法脫硫+SCR 脫硝組合工藝具有以下特點： 1.濕法脫硫應(yīng)用廣泛，工藝成熟。
3. wet desulfurization +scr denitration combined process wet desulfurization +scr denitration combined process has the following characteristics: 1 Wet desulfurization is widely used and the process is mature.
2.一次性投資成本較低，且運行費用較低。
2. the one-time investment cost is low and the operation cost is low.
3.若采用石灰石-石膏法，后續(xù)石膏產(chǎn)生量較大，會帶來后續(xù)石膏綜合利用問題。
3. if the limestone gypsum method is adopted, the subsequent gypsum production will be large, which will lead to the comprehensive utilization of the subsequent gypsum.
4.濕法脫硫后的煙氣會再煙囪口形成霧狀水汽，稱為白色煙羽，攜帶有 SO2、SO3、CaSO4、Cl-等污染物，目前已經(jīng)有許多地區(qū)要求濕法脫硫后的煙氣采取“消白”措施，需要增加建設(shè)成本和運行成本，并增加能耗。
4. the flue gas after wet desulfurization will form fog like water vapor at the chimney mouth, which is called white plume, carrying SO2, SO3, CaSO4, cl- and other pollutants. At present, many regions have required "white elimination" measures for the flue gas after wet desulfurization, which needs to increase the construction cost, operation cost and energy consumption.
5.濕法脫硫運行過程中對設(shè)備的腐蝕較大，建設(shè)過程中應(yīng)做好脫硫塔的防腐，運行過程中應(yīng)加強檢修，保證系統(tǒng)穩(wěn)定運行。
5. the equipment is severely corroded during the operation of wet desulfurization, so the desulfurization tower shall be well protected against corrosion during the construction process, and the maintenance shall be strengthened during the operation process to ensure the stable operation of the system.
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企業(yè)二維碼
2022-06-28
