本文選題：煤 + 液化傳輸��； 參考：《西南石油大學(xué)》2017年碩士論文

【摘要】：在我國(guó)煤的短距離運(yùn)輸以公路運(yùn)輸為主,此類運(yùn)輸方式具有便捷、靈活、易于統(tǒng)籌安排等優(yōu)點(diǎn),自上世紀(jì)新中國(guó)成立以來(lái)延用至今。隨著社會(huì)的發(fā)展和公眾環(huán)境意識(shí)的提高,公路運(yùn)輸方式伴隨的一系列缺陷也突顯出來(lái)。運(yùn)輸中的固體廢棄物和內(nèi)燃機(jī)的廢氣排放為主要的環(huán)境污染問(wèn)題,汽車作為移動(dòng)的污染源具有難控制、不固定的特點(diǎn),對(duì)污染的控制和治理造成了較高的技術(shù)困難。同時(shí),以塊狀運(yùn)輸?shù)拇肢E運(yùn)輸方式,造成了煤大多采用固定床燃燒技術(shù)(fixed bed combustion technology)進(jìn)行燃燒,而抑制了具有諸多環(huán)保和經(jīng)濟(jì)優(yōu)點(diǎn)的流化床燃燒技術(shù)(fluidized bed combustion technology)的推廣。因此,建立一種新型的傳輸技術(shù),取代原有的公路運(yùn)輸具有社會(huì)必要性。研究采用水力壓裂傳輸技術(shù)(hydraulic fracture transportation technology)相類似的方式,將煤塊破碎為煤粉,與壓裂用支撐劑(proppant)相似,借助具有一定粘彈性的流體對(duì)其進(jìn)行輸送,構(gòu)建出煤的液化傳輸技術(shù)。為實(shí)現(xiàn)煤粉的流體運(yùn)輸,需對(duì)流體特性進(jìn)行改變。根據(jù)斯托克斯重力沉降公式(Stokes sedimentation law),沉降速度受控于顆粒的粒徑、流體粘度和顆粒與流體的密度差,由于煤粉密度不變,方案研究中對(duì)煤粉的粒徑分布、流體的粘度和密度進(jìn)行了研究,并在實(shí)驗(yàn)研究的基礎(chǔ)上獲得初步方案。運(yùn)行方案確定了三個(gè)變量的變化范圍,據(jù)此以經(jīng)濟(jì)成本為決策目標(biāo),煤粉懸浮性為約束條件,建立了煤液化傳輸技術(shù)的多目標(biāo)規(guī)劃數(shù)學(xué)研究方法,并借助MATLAB進(jìn)行了最優(yōu)化問(wèn)題的求解,運(yùn)行結(jié)果為:煤粉80-100目,流體密度p=1.15g/cm3,用于提升流體粘度的黃原膠質(zhì)量分?jǐn)?shù)ω=0.35%;煤粉100-120目,流體密度p=1.15g/cm3,用于提升流體粘度的黃原膠質(zhì)量分?jǐn)?shù)ω=0.25%;最佳液化傳輸方案為100-120目煤粉對(duì)應(yīng)方案。正文中詳細(xì)給出了編輯程序語(yǔ)言的代碼和運(yùn)行圖。表面活性劑(surfactant)對(duì)煤粉在液相中穩(wěn)定性影響研究結(jié)果顯示,離子型表面活性劑能延長(zhǎng)煤粉的沉降時(shí)間,其原因在于表面活性劑親油基團(tuán)吸附于煤粉表面,帶電的親水基團(tuán)分布在煤粉表面而形成雙電層結(jié)構(gòu),增強(qiáng)了煤粉的穩(wěn)定性。實(shí)驗(yàn)結(jié)果顯示以十二烷基苯磺酸鈉(sodium dodecyl benzene sulfonate,SDBS)為代表的抗鈣陰離子表面活性劑對(duì)煤粉穩(wěn)定性具有增強(qiáng)作用,但在方案應(yīng)用中不具有經(jīng)濟(jì)價(jià)值。溫度對(duì)煤粉穩(wěn)定性的影響原因在于對(duì)黃原膠溶液粘度的影響,黃原膠粘溫曲線顯示隨著溫度的升高,溶液粘度逐漸下降,因此較低的環(huán)境溫度更利于煤的穩(wěn)定和傳輸。液化傳輸?shù)牧黧w在經(jīng)氧化降粘后體系內(nèi)的煤粉迅速沉淀,實(shí)驗(yàn)研究的降粘劑及使用濃度為1000mg/L的過(guò)氧化氫(hydrogenperoxide,H2O2),氧化產(chǎn)出液粘度降低至2mPa·s,該產(chǎn)出液可重復(fù)用于配制傳輸煤粉的流體。本文以油田水力壓裂支撐劑傳輸技術(shù)為思路,建立了液體傳輸煤粉的新型傳輸技術(shù)。實(shí)驗(yàn)研究中對(duì)該傳輸技術(shù)進(jìn)行了方案的合計(jì)及優(yōu)化,數(shù)學(xué)問(wèn)題的計(jì)算機(jī)求解取得了更為精確的優(yōu)化方案。該運(yùn)輸方案解決了過(guò)去公路傳輸方案中存在的環(huán)境問(wèn)題,方案的特性將促進(jìn)流化床燃燒的應(yīng)用,對(duì)清潔生產(chǎn)具有重要意義。
[Abstract]:The short distance transportation of coal in our country is mainly by highway transportation. This kind of transportation has the advantages of convenient, flexible and easy to plan. Since the founding of new China in the last century, it has been used since the founding of new China in the last century. With the development of the society and the improvement of public awareness of the environment, a series of defects accompanied by the way of highway transportation are also highlighted. As the main environmental pollution problem, the vehicle as the main source of environmental pollution is difficult to control, and the unfixed characteristics of the vehicle have caused high technical difficulties for the control and control of pollution. At the same time, the rough transportation of lump transportation causes the coal to use the fixed bed combustion technology (fixed bed combustion Tech). Nology) burning, and restraining the popularization of fluidized bed combustion technology with many advantages of environmental protection and economy. Therefore, it is necessary to establish a new type of transmission technology to replace the social necessity of the original road transport. The study adopts the technology of hydraulic fracturing transmission (hydraulic fracture transportation TE). Chnology) in a similar manner, coal is broken into pulverized coal and similar to the fracturing proppant (proppant). With the aid of a fluid with a certain viscoelasticity, the coal liquefaction transmission technology is constructed. In order to realize the fluid transportation of coal powder, the fluid characteristics need to be changed. According to the Stokes gravity settlement formula (Stokes sedimentation) Law), the velocity of settlement is controlled by particle size, fluid viscosity and the density of particles and fluid. Due to the constant density of coal powder, the particle size distribution of pulverized coal, the viscosity and density of the fluid are studied in the scheme study, and a preliminary scheme is obtained on the basis of the experimental study. The operation scheme determines the range of change of the three variables. Accordingly, the variation range of the coal powder is determined. The economic cost is the decision target and the pulverized coal suspension is the constraint condition. The multi-objective programming mathematical research method of coal liquefaction transmission technology is established, and the optimization problem is solved with the help of MATLAB. The operation results are as follows: 80-100 mesh of coal powder and p=1.15g/cm3 of fluid density, used for the xanthan mass fraction =0.35% of the xanthan glue to lift the viscosity of the fluid, and 100-1 of the coal powder. 20 mesh, the fluid density p=1.15g/cm3, used to improve the fluid viscosity of the xanthan mass fraction of the mass fraction of Omega =0.25%; the best liquefaction transmission scheme is the 100-120 mesh pulverized coal corresponding scheme. In the text, the code and operation diagram of the editing program language are given in detail. The effect of the surface active agent (surfactant) on the stability of the pulverized coal in the liquid phase shows that the ionic type is an ionic type. The surface active agent can prolong the settling time of the pulverized coal. The reason is that the surface active agent is adsorbed on the surface of the coal powder. The charged hydrophilic group is distributed on the surface of the pulverized coal to form a double layer structure and enhances the stability of the pulverized coal. The experimental results show that the sodium dodecyl benzene sulfonate (SDBS) is the representative of the Sodium Alkylbenzene Sulfonic Acid (SDBS). The anti calcium anion surfactant has an enhanced effect on the stability of pulverized coal, but it is not of economic value in the application of the scheme. The influence of temperature on the stability of pulverized coal is the effect of the viscosity of the xanthan gum solution. The viscosity of the xanthan adhesive temperature curve shows that the viscosity of the solution decreases gradually with the increase of temperature, so the lower environmental temperature is more beneficial. The coal powder is stable and transmitted. The liquid of liquefied transport is precipitated rapidly in the system of oxidation and viscosity reduction. The viscosity reducer and the hydrogen peroxide (hydrogenperoxide, H2O2) used in the experimental study are 1000mg/L, and the viscosity of the oxidized output liquid is reduced to 2mPa. S. The liquid can be reused to prepare the fluid for transporting pulverized coal. The new transmission technology of liquid pulverized coal is established. In the experimental study, the scheme of the transmission technology is combined and optimized. The computer solution of mathematical problems is more accurate. The transportation scheme solves the environmental problems in the highway transmission scheme. The characteristics of the case will promote the application of fluidized bed combustion, which is of great significance for cleaner production.

【學(xué)位授予單位】：西南石油大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TD56

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 Houari Ameur;;3D hydrodynamics involving multiple eccentric impellers in unbaffled cylindrical tank[J];Chinese Journal of Chemical Engineering;2016年05期

2 明華;盧擁軍;翟文;王麗偉;黃彩賀;;黃原膠壓裂液特性與應(yīng)用前景分析[J];精細(xì)石油化工;2016年01期

3 AMEUR Houari;BOUZIT Mohamed;GHENAIM Abdellah;;Numerical study of the performance of multistage Scaba 6SRGT impellers for the agitation of yield stress fluids in cylindrical tanks[J];Journal of Hydrodynamics;2015年03期

4 張黎;侯銳鋒;高剛;李興武;雷霆;張潔;;纖維素衍生物及纖維材料在壓裂液中的應(yīng)用[J];廣東化工;2014年04期

5 孫立田;;一種用于水基壓裂液稠化劑的制備及性能評(píng)價(jià)[J];石油化工應(yīng)用;2014年01期

6 趙鵬飛;劉通義;向靜;楊慧芬;;GRF新型清潔壓裂液在南翼山淺油藏的應(yīng)用[J];鉆采工藝;2013年04期

7 林蔚然;黃鳳興;伊卓;;合成水基壓裂液增稠劑的研究現(xiàn)狀及展望[J];石油化工;2013年04期

8 徐宗恒;徐則民;曹軍尉;孟慶會(huì);;土壤優(yōu)先流研究現(xiàn)狀與發(fā)展趨勢(shì)[J];土壤;2012年06期

9 劉觀軍;李小瑞;丁里;趙秀波;馬少云;賴小娟;;CHJ陰離子清潔壓裂液的性能評(píng)價(jià)[J];油田化學(xué);2012年03期

10 鄒才能;朱如凱;吳松濤;楊智;陶士振;袁選俊;侯連華;楊華;徐春春;李登華;白斌;王嵐;;常規(guī)與非常規(guī)油氣聚集類型、特征、機(jī)理及展望——以中國(guó)致密油和致密氣為例[J];石油學(xué)報(bào);2012年02期

，

本文編號(hào)：1879574