6th燃煤鍋爐脫硫除塵一體化工程設(shè)計(jì)(已修改)
2025-06-17 17:58 本頁(yè)面
【正文】 溫江工業(yè)園區(qū)6t/h燃煤鍋爐脫硫除塵一體化工程設(shè)計(jì)摘 要控制燃煤的途徑有燃燒前脫硫，燃燒中脫硫，燃燒后煙氣脫硫。目前，煙氣脫硫（Flue Gas Desulfurization，縮寫為FGD）是世界上唯一大規(guī)模商業(yè)化應(yīng)用的脫硫技術(shù)[1]。世界各國(guó)致力于煙氣脫硫研究的方法約200多種，但工業(yè)化應(yīng)用的只有10多種，其中較多采用石灰石 石膏法、雙堿法和鈉堿法，但由于石灰石 石膏法、鈉堿法經(jīng)濟(jì)成本較高，雙堿法脫硫工藝在中、小型燃煤鍋爐中的應(yīng)用得到廣泛推廣[2]。本論文選擇以6t/h燃煤鍋爐為對(duì)象設(shè)計(jì)煙氣脫硫除塵工藝，在查閱文獻(xiàn)和工程設(shè)計(jì)手冊(cè)以及工程實(shí)踐參數(shù)的基礎(chǔ)上，確定采用雙堿法，進(jìn)行工藝的選擇和設(shè)計(jì)計(jì)算以及設(shè)備選型。在煙氣脫硫系統(tǒng)中，吸收塔是核心裝置[2]，當(dāng)前濕法脫硫的吸收設(shè)備種類很多，其中旋流塔板是濕法脫硫的常用設(shè)備，其具有高負(fù)荷、壓降低、不易堵塞及彈性寬等優(yōu)點(diǎn)[3]，適用于吸收速率快的吸收劑，且考慮到實(shí)施企業(yè)的現(xiàn)狀，決定采用旋流塔板作為脫硫工藝的吸收設(shè)備。煙氣以逆流的方式通過(guò)塔體，增大了漿液與的接觸面積，降低了所需的液氣比，節(jié)約了動(dòng)力費(fèi)用，還減少了工藝用水量，除霧、吸收和氧化同時(shí)在一個(gè)塔內(nèi)進(jìn)行，有效減小了裝置的體積和占地面積。本設(shè)計(jì)在保證了脫硫系統(tǒng)可行性的同時(shí)，又保證了脫硫效率，使排放濃度達(dá)到了設(shè)計(jì)要求。關(guān)鍵詞： 燃煤鍋爐，煙氣脫硫，雙堿法，旋流板塔，設(shè)計(jì) Flue gas Dedust and Desulfurization Design for 6t/h boiler in Wenjiang industrial park AbstractThere are many ways to control coal desulfurization before bustion, bustion desulfurization, flue gas desulfurization after bustion. At present, the FGD (flue gas desulfurization, the acronym for the FGD) is the world39。s only largescale mercial application of desulfurization countries in the world dedicated to research about more than 200 kinds of ways, but only 10 kinds of ways in industrial application. One more use of limestonegypsum method, dualalkali sodium alkali. However, due to limestone gypsum, sodium alkali high economic cost, dualalkali FGD process in the medium and small coalfired boiler applications are widely promoted.In this paper, chosen to 6t / h coalfired boiler flue gas desulfurization for the object design process, in the literature review and engineering design manual [1], as well as engineering practice parameters. Determined using dualalkali design process of calculation and selection of equipment.In the flue gas desulfurization system, the tower is the core devices, One cyclone tower is monly used in wet desulfurization equipment, which has a high load, low pressure drop, easy to plug and flexible width, etc., for fast absorption rate absorbent, and taking into account the status of implementation of the enterprise, decided to adopt the cyclone Plate as the desulfurization process of absorption equipment. Flue gas in order to countercurrent manner through the tower and increase the size of the contact area with the to reduce the required liquidgas ratio, the driving force for cost savings, but also a reduction of process water, reducing the preparation of gypsum system load。, absorption and oxidation in a tower at the same time, the device reduces the effective volume and area. Key words: coalfired boiler，flue ga
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