我公司承建的湖南省常德市生活垃圾焚燒發(fā)電項目三期煙氣凈化工程于2022年1月6日通過72+24小時試運行。
The flue gas cleaning (FGC) project undertaken by Huaxing for Phase III of Changde waste incineration power plant in Hunan Province passed 72+24 hours trial operation on January 6, 2022.
該項目設(shè)計規(guī)模日焚燒處理垃圾600噸，配 1x600t/d機械爐排式垃圾焚燒爐，配置一套煙氣凈化系統(tǒng)。煙氣凈化系統(tǒng)主要用于脫除余熱鍋爐出口煙氣中的顆粒物、酸性物質(zhì)、重金屬等污染物，使其滿足本項目規(guī)定的排放要求。煙氣凈化系統(tǒng)采用“爐內(nèi)SNCR脫硝（尿素）+半干法（Ca(OH)2）+干法（Ca(OH)2）+活性炭噴射吸附+高效紊流循環(huán)脫酸干法工藝+袋式除塵（含布袋下返料系統(tǒng)）+SCR(預(yù)留)+飛灰輸送、儲存及穩(wěn)定化+引風(fēng)機”組合工藝，并在半干反應(yīng)塔入口及半干反應(yīng)塔出口設(shè)置煙氣在線分析儀，在煙囪入口設(shè)置CEMS，實現(xiàn)藥劑投加的自動控制，為我司EP工程。
The plant is designed to incinerate 600 tons of municipal solid waste per day, equipped with a 1x600 t/d mechanical grate incinerator and a set of FGC equipment. The FGC system is mainly used to remove particles, acid substances, heavy metals, and other pollutants at the outlet of the waste heat boiler, meeting the emission requirements of the plant. The FGC system adopted the combined process of "SNCR in-furnace denitration with urea + semi dry method with Ca(OH)2 + dry method with Ca(OH)2 + activated carbon injection adsorption + dry method with high-efficiency turbulent circulation deacidification + bag filter with mass-returning + SCR reserved +fly ash conveying, storage, and stabilization+ ID fan”. The flue gas online analyzer is set at the inlet of the semi dry reaction tower and the outlet of the semi dry reaction tower . CEMS is set at the chimney inlet. The automatic control of reagent dosing is realized. It is an EP project of Huaxing.
隨著中國焚燒裝備逐步走向國際市場，華星東方在參與海外國際交流和競標(biāo)活動時，感受到近幾年國際主流煙氣工藝的趨勢正在從半干法、濕法往高效干法轉(zhuǎn)變。特別是華星東方協(xié)助國內(nèi)總包方走出去時遭遇歐美企業(yè)較低的鍋爐排煙溫度而獲得的較高鍋爐效率，越來越成為中國裝備競標(biāo)國際項目的短板。
2016年起，為了了解和掌握未來煙氣工藝發(fā)展的最新走向，華星東方技術(shù)團隊陸續(xù)走訪了歐洲部分焚燒廠并與歐洲同行展開了接觸與交流，就該工藝的引進進行了接洽。
As China's incineration equipment is gradually moving towards the international market, when participating in international exchanges and bidding activities, Huaxing experienced that the mainstream of flue gas cleaning technology was recently changing from semi-dry / wet method to efficient dry method. In particular, when Huaxing assisted the domestic enterprises to go abroad, the higher boiler efficiency obtained by European and American enterprises due to the lower boiler exhaust gas temperature has increasingly become a weak point for Chinese equipment to bid for international projects.
Since 2016, in order to understand and master the latest trend of future FGC process, the technical team of Huaxing East has successively visited some incineration plants in Europe, carried out basic contacts and communications with European counterparts, and contacted the introduction of the new dry-process.
2017年底，華星東方與歐洲同行首次攜手簽署了北京高安屯醫(yī)廢項目，率先確立了使用該“高效紊流循環(huán)脫酸干法工藝”。
At the end of 2017, Huaxing and its European partner jointly signed the Beijing Gao'antun Medical Waste Project for the first time, taking the lead in establishing the use of the dry-process of "Efficient Turbulent Circulation Deacidification".
2018年華星東方順利與歐洲同行攜手完成了泰國工業(yè)固廢項目，建立了第一次合作。
In 2018, Huaxing successfully completed the industrial solid waste project in Thailand with its European partner, established the first cooperation.
2019年起，華星東方攜手歐洲同行與北控集團北發(fā)建設(shè)一同將該工藝應(yīng)用于常德三期生活垃圾焚燒項目，并于2020年開始實施，2021年7月接入煙氣，2022年初完成72小時驗收。截止發(fā)稿為止，該系統(tǒng)已平穩(wěn)運行1年3個月。
Since 2019, Huaxing East & its European partner and Beifa Construction of Beijing Enterprises Group have applied this process to the Changde Phase III WTE plant. The new dry-process was implemented in 2020. The flue gas was connected in July 2021, and the 72 hours acceptance was completed in early 2022. As of the date of publication, the system has been running smoothly for 1 year and 3 months.
常德3號爐連續(xù)一年排放控制數(shù)據(jù)
1 Year's Continuous Emission Control Data
of Changde No. 3 Boiler
常德4號爐連續(xù)一年排放控制數(shù)據(jù)
1 Year's Continuous Emission Control Data
of Changde No. 4 Boiler
與常德二期傳統(tǒng)的SDA工藝相比，其連續(xù)周期運行指標(biāo)基本接近，但石灰消耗量低至5kg/t垃圾，并且省去了制漿系統(tǒng)的投資和運行維護能耗。
Compared with the traditional SDA process in Changde Phase II, its continuous cycle operation index is close, but the lime consumption is as low as 5 kg/ton MSW. The investment in the slurry preparation system and the energy consumption for operation and maintenance are saved.
該項目的意義：
1、解決了物料循環(huán)系統(tǒng)在中國煙氣含濕率高的爐排爐應(yīng)用工況下的長期平穩(wěn)可控運行。自我國引入NID及Turbosorp以來，除極個別爐排和大部分流化床垃圾焚燒爐運行較好，國內(nèi)顯有成功應(yīng)用案例。華星東方曾參與過，滄州，保定，石家莊等循環(huán)干法工藝的SDA技改，包括?？谝黄冢瑥B門等都出現(xiàn)了系統(tǒng)運行不平穩(wěn)，煙氣含濕率和飛灰潮濕導(dǎo)致返料系統(tǒng)不穩(wěn)定從而建床失敗致使系統(tǒng)運行失敗。
2、為小蘇打工藝引入，通過物料循環(huán)從而減少物料消耗，將SCR往上游移動和外置省煤器+二級活性炭干法和布袋工藝，減少了蒸汽消耗。為超低排放從濕法轉(zhuǎn)向雙布袋干法工藝開辟了道路。
3、為原有SDA半干法工藝，在場地受限的情況下增設(shè)一道干法進一步實現(xiàn)超低排放提供了解決方案。
4、通過提高SDA半干法排煙溫度的控制，增加小蘇打物料循環(huán)系統(tǒng)結(jié)合三菱配方的脫硝布袋及特有的低溫再生工藝，為場地極為緊張的舊焚燒廠超低排放改造提供了可能。
The significance of the technology:
1. It solved the long-term stable and controllable operation of the material circulation under the condition of high-moisture grate furnace in China. Since the introduction of NID and Turboprop in China, except for a few grate furnace and most fluidized beds, there are rarely successful applications in China. Huaxing has participated in the SDA technical transformation of the circulating dry process in Cangzhou, Baoding, Shijiazhuang, etc. System operation was unstable in Haikou Phase I, Xiamen. The moisture content in flue gas and fly ash led to the instability of the circulation, which led to the failure of bed formation and the failure of system operation.
2. Sodium bicarbonate is introduced to reduce material consumption through material circulation. SCR is moved upstream and external economizer + two-stage activated carbon dry and bag process are installed to reduce steam consumption. It opens up a way for ultra-low emission from wet process to double-bag dry process.
3. It provides a solution for the original SDA semi-dry process to further achieve ultra-low emissions by adding a dry process under the condition of limited site.
4. By improving the control of SDA semi-dry flue gas exhaust temperature, adding sodium bicarbonate circulation combined with MHI's formula of denitration bag and its unique low-temperature regeneration, it is possible for the ultra-low emission transformation of the old incineration plant with extremely tight site.
華星東方正致力于探索和實踐最優(yōu)的固廢煙氣治理解決方案，并為行業(yè)積累工程應(yīng)用數(shù)據(jù)。
Huaxing East is committed to exploring and practicing the best solid waste FGC solutions, and accumulating engineering application data for the industry.
華星東方在湖南省的業(yè)績涵蓋包括：常德二期、三期、石門、武岡等多個項目。
The achievements of Huaxing East in Hunan Province include Changde Phase II & III, Shimen, Wugang, etc.
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