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| 瀝青輸送泵NYP110-RU-T2-W11高粘度泵配XWD11KW-7-13流量7.3m3/h,壓(yā)力0.8Mpa | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 發布時間：2015-1-4 14:40:04 點擊次數： | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
瀝青是由(yóu)不同分子量(liàng)的碳氫化合物(wù)及其非金屬衍生物組成的黑褐色複雜(zá)混合物，呈(chéng)液态(tài)，是一種防水防潮(cháo)和防腐的有機膠凝材料。用于塗料、塑(sù)料、橡膠等工業(yè)以及鋪築路(lù)面等。 Asphalt is composed of different molecular weight hydrocarbons and non-metallic derivatives of dark brown complex mixture, a liquid, is a kind of waterproof and moistureproof and anticorrosive organic cementing materials.Used in coatings, plastic, rubber and other industrial and paved road, etc. 中文名 瀝青Chinese name asphalt CAS登錄(lù)号8052-42-4The CAS login number 8052-42-4 EINECS登錄号232-490-9EINECS registration number 232-490-9 熔 點 485Melting point 485 沸 點<470 ℃boiling point < 470 ℃< iv> 水溶性不溶于水Water soluble does not dissolve in water 密 度 1.15-1.25Dense degree of 1.15 to 1.25 外 觀半固體或液體狀态Outside view half solid or liquid state 閃(shǎn) 點204.4Flash point 204.4 危險性描述健康危害：中等毒性(xìng)Describe health hazard risk: medium toxicity 來 源煤和石油To the source of coal and oil 成 分瀝青質和(hé)樹脂Into asphaltene and resin 含(hán) 量99.48%Containing 99.48% 爆炸下限 30(g/立方(fāng)厘米)The lower explosive limit (30 g/cm3) 導電性能(néng)絕緣體(常溫下)Conductivity insulator (room temperature) 瀝青屬于憎水性材(cái)料，它不透(tòu)水，也(yě)幾乎不溶于水(shuǐ)、丙酮、乙(yǐ)醚、稀乙醇，溶于二硫化碳、四氯化(huà)碳、氫氧化(huà)鈉。瀝青及其煙氣對皮膚粘膜具有刺激性(xìng)，有光毒作用和緻癌作用。我(wǒ)國三種主要瀝青的毒(dú)性：煤焦瀝青>頁岩瀝(lì)青>石油瀝青，前二(èr)者有緻癌性。瀝青的主要皮膚損害有：光毒(dú)性皮炎，皮損限于面、頸部等暴露部分；黑變病，皮損常對稱分布于暴露部位，呈片狀，呈褐－深褐－褐黑(hēi)色；職業性(xìng)痤瘡；疣狀贅生物及事故引起(qǐ)的熱燒傷。此外，尚有頭昏、頭脹(zhàng)，頭痛、胸(xiōng)悶(mèn)、乏力、惡心、食欲不振等全身症狀和(hé)眼 、鼻、咽部的刺激症狀。Asphalt is hydrophobic material, it impermeable, almost insoluble in water, dilute ethanol, acetone, ether, soluble in carbon disulfide, carbon tetrachloride, sodium hydroxide.Asphalt and flue gas of skin mucous membrane irritation, has the light effect and the effect that cause cancer.China's three major asphalt toxicity: coal tar > > oil shale asphalt asphalt, before both have carcinogenicity.The main skin lesions are: asphalt light contact dermatitis, skin confined to the face, neck and other exposed parts;Melanosis, skin lesions often symmetrical distributed in the exposed parts, plate shaped, brown - deep brown - brown-black;Occupational acne;Verrucous vegetations and the accident cause thermal burns.In addition, there are dizziness, head bilges, headache, chest tightness, fatigue, nausea, loss of appetite and other systemic symptom and eye, nose, pharynx and irritation. 煤(méi)焦瀝青Coal tar 煤焦瀝(lì)青是煉焦的副産品，即焦(jiāo)油蒸餾後殘留在蒸餾釜内的黑色物質。它與精制焦油隻是物理性質有分别，沒有(yǒu)明顯的界限，一般(bān)的劃分方法是(shì)規定軟化點在26．7℃（立方塊法）以下(xià)的為焦油，26．7℃以上的為瀝青。煤焦瀝青中主要含有難揮發的蒽(ēn)、菲、芘等。這些物質具(jù)有毒性，由于這些成分的含量不同，煤焦瀝青的性質也因而不同。溫度的變(biàn)化對煤焦瀝青的影響很大，冬季容易脆裂，夏季容易軟化。加熱時有特殊氣味；加熱到260℃在5小時(shí)以後，其所含的(de)蒽、菲、芘(pí)等成分就會揮(huī)發出來。Coal tar is a by-product of coking, namely tar distillation residue in distillation kettle black material.It has respectively with refined tar is only physical properties, there is no clear boundaries, is the way of dividing rules softening point in commonly 26.7 ℃ (cube method) for tar, under 26.7 ℃ above for asphalt.Coal tar mainly contains difficult volatilization of anthracene, phenanthrene, pyrene, etc.These substances have toxic, because the content of these compounds is different, the properties of coal tar are so different.The change of temperature has much effect on the coal tar, winter easy embrittlement, summer is easy to soften.Heating from time to tome special smell;Heated to 260 ℃ after 5 hours, its composition such as anthracene, phenanthrene, pyrene will evaporate. 石油瀝青asphalt 石油瀝青是(shì)原油蒸餾後的殘渣。根據提煉程度的不同(tóng)，在常溫下成液體、半固體或固體(tǐ)。石油瀝(lì)青色黑而有光澤，具有較(jiào)高的感溫性。由于它在生産過程中曾經蒸餾至400℃以上，因而(ér)所含揮發成分甚(shèn)少，但仍(réng)可能有高(gāo)分子的碳氫化(huà)合物未經揮發出來(lái)，這些物質或多或少對人體健康是有害的。Petroleum asphalt is after crude distillation residue.Depending on the degree of refining, into a liquid, semi-solid or solid at room temperature.Petroleum pitch dark and luster, has higher heat resistance.Because it had distillation in the production process to more than 400 ℃, thus contained little volatile component, but may still have high polymer without volatile hydrocarbons, which more or less is harmful to human health. 天(tiān)然瀝青Natural asphalt 天(tiān)然瀝青儲藏在地下，有的形成礦層或在地殼表面(miàn)堆積。這種瀝青大都經過(guò)天然蒸發(fā)、氧化，一般已不含有任何毒素。Natural asphalt storage in underground, some forming seam or piled up in the earth's crust surface.The asphalt mostly through the natural evaporation and oxidation, generally do not contain any poison. 瀝青(qīng)材料分為(wéi)地瀝青和焦油瀝青(qīng)兩大(dà)類。地瀝青又分(fèn)為天然瀝青和石油(yóu)瀝青，天然瀝青是石油滲出地表經長期暴露和蒸發(fā)後的殘(cán)留物；石油瀝青是将精制加工(gōng)石油所(suǒ)殘餘的渣油，經适當的(de)工藝處理後得到的産品。焦油瀝青是煤、木材等(děng)有機物幹餾(liú)加工所得的焦(jiāo)油經再加工後的産品。工程中采(cǎi)用的瀝青絕(jué)大多數是石油瀝青，石油瀝青是複雜的碳氫化合物與其非金屬衍生物組成的混合物。通常瀝青閃點在240℃~330℃之間，燃點比閃點約高3℃~6℃度，因此施工溫度(dù)應控制在閃點以下。Asphalt material divided into two categories, pitch and bitumen.Asphalt is divided into natural asphalt and petroleum asphalt, natural bitumen is oil seepage surface after long exposure and evaporation residue;Petroleum asphalt is a residual of residual oil will be refined processing, after appropriate processing products.Bitumen is coal, wood and other organic matter carbonization processing tar after reprocessing of products.Engineering used in the asphalt is the vast majority of asphalt, asphalt is a complex mixture of hydrocarbons with nonmetal derivatives.Usually asphalt flash point between 240 ℃ ~ 330 ℃, flash point is higher than flash point about 3 ℃ ~ 6 ℃ degrees, so the construction temperature should be controlled below the flash point.v 瀝(lì)青(qīng)輸送泵是容積式内齧合齒輪泵，主(zhǔ)動齒(chǐ)輪（外轉子）帶動被動齒輪(lún)（内轉子）旋轉時，不斷産生(shēng)封閉的空間，在吸油(yóu)區齒輪逐漸脫(tuō)離齧合而液體不斷地充滿齒間并被帶到出油區，齒輪在出油區進入(rù)齧合時液體被排出。兩個(gè)旋轉齒輪的(de)共同作用，形成一個穩定的體積排量，沒有脈動。由于泵是完全對稱的，泵可以反轉，液流方向(xiàng)也随之改變(biàn)。但應注意，泵的轉向(xiàng)可能受到密封或泵内其它(tā)結構的限(xiàn)制，用戶有反轉要求時應(yīng)在訂(dìng)貨時做出說明。 該泵結構簡單，适用範圍廣，可以輸送(sòng)高粘度和低粘度的各種液體，最高輸送粘度可達500000cst。溫度範圍自-40— 不(bú)同的使用條件，泵的結構(gòu)形式可能(néng)不同，具體(tǐ)應用請向廠家或本公司(sī)客戶(hù)代表咨詢。需要指出的是泵的轉速愈高，泵的(de)磨損愈嚴重，液體中如含(hán)有磨料物質(zhì)，泵的材料應選用(yòng)耐磨材質，在此種工況下，泵的壓力和轉速都應降低，高溫條件下(xià)，則應(yīng)增加泵的間隙，并采用耐熱材料 。
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