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Receptionists pratsі - Moskalova VM

6.2.9 minds samozaymannya rechovin

Deyakі rechovini organіchnogo pohodzhennya toil zdatnіst samozaymatisya without nayavnostі zovnіshnogo dzherela zapalyuvannya.

Samozaymannya - tse processes gorіnnya, yaky vinikaє vnaslіdok heat scho utvorilasya in rechovinі through samoіnіtsіyovanі ekzotermіchnі processes.

Samozaymannya - tse trivaly processes gorіnnya scho vіdbuvaєtsya for zvichaynih abo Troch pіdvischenih temperatures navkolishnogo seredovischa.

Materіali zdatnі to samozaymannya toil Velika pozhezhnu nebezpeku through porosity, voloknistіst, Area digit poverhnі to oxidation. Chim nizhcha temperature for yakoї vіdbuvaєtsya processes samozaymannya rechovin, team bіlsh Won nebezpechna in pozhezhnomu vіdnoshennі.

Fallow od reasons viniknennya rozrіznyayut three Vidi samozaymannya:

• thermal;
• hіmіchne;
• mіkrobіologіchne.

The essence of heat samozaymannya polyagaє in fact scho for Pevnyi minds have rechovinі vіdbuvayutsya zmіni, SSMSC viklikayut samorozіgrіvannya rechovini. The ear samorozіgrіvannya pov'yazany Zi zbіlshennyam shvidkostі ekzotermіchnih junction of two physical-hіmіchnih peretvoren. Takі peretvorennya mozhut sprichiniti abo rіvnovagu mіzh heat scho utvorilosya in materіalі, i teplovіddacheyu in navkolishnє seredovische, abo dosyagnennya takoї heat kіlkostі for yakoї zroste shvidkіst reaktsіy i pochnetsya gorіnnya processes.

Hіmіchne samozaymannya Mauger vinikati todі, if at rechovinu dіє kisen povіtrya water abo stink zmіshuyutsya mіzh him.

Samozaymayutsya at stikannі s povіtryam roslinnі abo tvarinnі Giry, that a product vigotovlenі on їh osnovі. Samozaymayutsya promaslenі ganchіrki, hemp, wool i navіt metalevі chips. Naynebezpechnіshі at tsomu vіdnoshennі naturalnі llyanі, konoplyanі that INSHI olіfi.

Bagato rechovin scho toil nizku samozaymannya temperature, it is easy to zaymayutsya povіtrі, tse alyumіnіy, zinc, bіly, zhovto that Chervoniy phosphorus. Tsі rechovini actively okislyuyutsya CHIN i ​​minds of akumulyatsії warmth vіdbuvaєtsya їh samorozіgrіvannya to a temperature samozaymannya.

Before rechovin, scho pid zaymayutsya dієyu Vod, nalezhat natrіy, kalіy, karbіd kaltsіyu, luzhnі methane quicklime vapno i t.іn. Traplyalisya vipadki viniknennya pozhezh vnaslіdok heat scho vidіlyalasya at reaktsії repayment vapna s water.

Samozaymannya Mauger vіdbuvatisya at zmіshuvannі stisnenogo CHIN that azotnoї acid nastіlki Shvydko scho yogo practical nemozhlivo zupiniti, more reaktsіya Got vibuhu character.

Mіkrobіologіchne samozaymannya buvaє in seredovischі de burhlivo mozhut rozvivatisya mіkroorganіzmi, SSMSC for rakhunok svoєї zhittєdіyalnostі vidіlyayut Teplov energіyu. Tse prirodnі organіchnі materіali Roslyn pohodzhennya (peat, chips, thyrsus that іn.).
Prirodnі organіchnі materіali Je bagatokomponentnimi systems. W Roslyn produktіv to mіkrobіologіchnogo samozaymannya zdatne svіzhozaskirdovane in siromu viglyadі sіno, Konyushin, kormovі grass, straw, hmіl, malt silo masa i t.іn.

Suttєvy vpliv on processes samozaymannya organіchnih rechovin Got їh zvolozhennya. Vologa stimulyuє processes burhlivogo rozvitku termofіlnih organіzmіv. Vology materіal spontaneously nagrіvaєtsya blizko to a temperature of 80? C, and potіm pochinaєtsya processes arbitrarily oholodzhennya abo strіmkogo samonagrіvannya s passing away to tlіnnya abo stіykogo gorіnnya.