It has been shown that this updated sampling and measurement method , which can measure the content of tar and dust individually , appears much more precise and credible , particularly aiming at the characteristic of heavy tar and dust content in biomass gas . this clarification system that adopts two - level shell and tube condensers and one tar removal filter , has the advantages of high removal efficiency ( 97 % ~ 98 % ) and low operating cost . besides , it has been made more environmentally friendly considering that wastewater from condensers has measured up to related effluent state standards after being disposed in tar clarifier - tank 多次試驗表明:針對生物質(zhì)氣浙江大學(xué)碩士學(xué)位論文含焦油灰塵量大的特點,改進的生物質(zhì)焦油取樣測量法可實現(xiàn)焦油和灰塵的分離,有較高準確性和可靠性;采用二級管殼式冷凝器與一級干式過濾器結(jié)合的燃氣冷凝凈化系統(tǒng)不但凈化效率高( 97 98 ) 、運行費用低,而且含焦油廢水二經(jīng)過澄清池澄清處理后可達到國家相關(guān)污水排放標準,避兔了濕式凈化系統(tǒng)的水污染;兼顧凈化效果、經(jīng)濟性和減少污染考慮,采用以半焦為吸附材料的于式凈化系統(tǒng)可以達到炊用燃氣對焦油含量的要求。