Methane combustion

Methane bụ a gaseous chemical compound na chemical usoro CH4. Nke a bụ mfe nnọchiteanya nke alkanes. Ndị ọzọ na aha maka otu a nke organic ogige: ịmachi, jupụta ma ọ bụ paraffinic hydrocarbons. Ha na-ji enwe otu nkekọ dị n'etiti carbon atọm na molekul, na ndị nile fọdụrụ valences nke ọ bụla nke carbon atọm na-jupụta site hydrogen atọm. N'ihi alkanes kasị mkpa mmeghachi omume bụ ọkụ. Ha ọkụ na-etolite carbon dioxide gas na mmiri vepo. N'ihi ya, a nnukwu ego nke tọhapụrụ chemical ike, nke a na-converted n'ime okpomọkụ ma ọ bụ eletriki ike. Methane bụ flammable mmiri mmiri na isi akụrụngwa nke eke gas, nke-eme ka ọ mara mma mmanụ ụgbọala. Na obi wider ojiji nke eke mmanu ndi mere onwe mmeghachi omume bụ methane combustion. Ebe ọ bụ n'okpuru nkịtị ọnọdụ bụ a gas, ọ bụ ike ibufe karịrị anya si iyi, n'ihi ya, ọ bụ mgbe tupu gasị.

The combustion usoro bụ mmeghachi omume n'etiti methane na oxygen, i.e. na mfe alkane ọxịdashọn. Nke a na-arụpụta carbon dioxide, mmiri na a ezigbo ike. Combustion nke methane nwere ike kọwara nke akụkụ: CH4 [gas] + 2O2 [gas] → CO2 [gas] + 2H2O [uzuoku] + 891 King James Version. Ya bụ, otu molekul nke methane site mmeghachi omume na abụọ ụmụ irighiri nke oxygen Nleta a molekul nke carbon dioxide na abụọ mmiri ụmụ irighiri. Nke a na a okpomọkụ, nke bụ hà 891 King James Version. Natural gas bụ ọcha ọkụ mmanu ndi mere onwe ya mere ka coal, mmanụ na ndị ọzọ fuels bụ ihe mgbagwoju ke mejupụtara. Ya mere, n'oge combustion ha emit n'ime ikuku dị iche iche na-emerụ kemịkal. Ebe ọ bụ na eke gas tumadi ekewet nke methane (banyere 95%), mgbe ahụ na-ere ya na o siri ike na-arụpụta site-ngwaahịa ma ọ bụ ha, ibe ndị dị nta karịa na ihe banyere ndị ọzọ fosil fuels.

The calorific uru nke methane (55.7 King James Version / g) dị elu karịa ya homologues, dị ka ethane (51.9 King James Version / g), propane (50.35 King James Version / g), butane (49.50 King James Version / g), ma ọ bụ ndị ọzọ fuels (osisi, coal, manu oku). Burning methane arụpụta ọzọ ume. Iji na-enye a afọ incandescent 100 W ìhè bulbs ga-agbakwa ọrụ 260 n'arọ nke osisi, na 120 n'arọ nke coal, manu oku ma ọ bụ 73,3 n'arọ, 58 n'arọ ma ọ bụ niile nke methane, nke kwekọrọ na 78,8 m³ nke eke gas.

The mfe alkane bụ ihe dị mkpa akụ maka na ọkụ eletrik emana. Na nke a emee site ere ya dị ka mmanụ ụgbọala ji esi mmiri ọkụ, na-amụba uzuoku nke mere a uzuoku tobaim. Ọzọkwa methane combustion na-iji na-emepụta na-ekpo ọkụ flue, haruru, onye ike na-enyere ọrụ nke gas tobaim (combustion na-arụ ọrụ ruo mgbe tobaim ma ọ bụ ndị tobaim onwe ya). Na ọtụtụ ndị na obodo, methane na-piped n'ime ụlọ anụ ụlọ kpo oku na nri. E jiri ya tụnyere ndị ọzọ ụdị hydrocarbon mmanụ ụgbọala ọkụ eke gas nwere a nta evolushọn nke carbon dioxide na a nnukwu ego nke eme okpomọkụ.

Combustion nke methane na-eji iji nweta okpomọkụ na ite-ọku uku nke dị iche iche chemical ọrụ, n'ihi na ihe atụ, nnukwu-ethylene osisi. The eke gas weere na ikuku ọnọ na burners nke pyrolysis ọkụ. The combustion usoro site flue, haruru na elu okpomọkụ (700-900 ° C). Ha ikpo anwụrụ (odude n'ime oku) na nke akụrụngwa ngwakọta bụ nri na uzuoku (iji belata Coke guzobere na oku akpa). N'okpuru ihe nke okpomọkụ, na plurality nke chemical Jeremaya mere, nke ga-ekwe lekwasịrị mmiri (ethylene na propylene) na byproducts (resin Arọ pyrolysis, hydrogen na methane fractions, ethane, propane, hydrocarbons, C4, C5, pyrocondensate, onye ọ bụla n'ime ha nwere ya ngwa n'ihi na ihe atụ, pyrocondensate iji na-emepụta benzene ma ọ bụ moto mmanụ ụgbọala components).

Combustion nke methane bụ a mgbagwoju anụ ahụ-chemical onu dabeere exothermic redox mmeghachi omume, ji a elu eruba ọnụego ma hapụ nnukwu ego nke okpomọkụ, na okpomọkụ nyefe na uka nyefe Filiks. Ya mere, imewe definition ngwakọta combustion okpomọkụ bụ a siri ike ọrụ, ebe ọ bụ na mgbakwunye na ihe ndị mejupụtara nke mmanụ ụgbọala ngwakọta inwe mmetụta siri ike ya nsogbu na mbụ okpomọkụ. Ha hụrụ onye na-abawanye nke combustion okpomọkụ ịrị elu na okpomọkụ nyefe na uka nyefe Filiks na-eme ka ya Mbelata. Methane combustion okpomọkụ na imewe Filiks na apparatuses chemical mmepụta kpebisiri ike site ngụkọta oge, na ẹdude nrụnye (e.g., na pyrolysis ite-ọku uku), ọ tụrụ iji thermocouples.